Prosecution Insights
Last updated: April 19, 2026
Application No. 18/556,652

TOFU PRODUCT PRODUCTION DEVICE

Non-Final OA §103§112
Filed
Oct 20, 2023
Examiner
SAMUELS, LAWRENCE H
Art Unit
3761
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Takai Tofu & Soymilk Equipment Co.
OA Round
1 (Non-Final)
56%
Grant Probability
Moderate
1-2
OA Rounds
3y 10m
To Grant
95%
With Interview

Examiner Intelligence

Grants 56% of resolved cases
56%
Career Allow Rate
273 granted / 488 resolved
-14.1% vs TC avg
Strong +39% interview lift
Without
With
+38.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 10m
Avg Prosecution
47 currently pending
Career history
535
Total Applications
across all art units

Statute-Specific Performance

§101
1.0%
-39.0% vs TC avg
§103
56.1%
+16.1% vs TC avg
§102
16.2%
-23.8% vs TC avg
§112
23.6%
-16.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 488 resolved cases

Office Action

§103 §112
Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Election/Restrictions Applicant’s election without traverse of Group I, claims 1-19 in the reply filed on 4 November 2025 is acknowledged. Claim Interpretation The following is a quotation of 35 U.S.C. 112(f): (f) Element in Claim for a Combination. – An element in a claim for a combination may be expressed as a means or step for performing a specified function without the recital of structure, material, or acts in support thereof, and such claim shall be construed to cover the corresponding structure, material, or acts described in the specification and equivalents thereof. The following is a quotation of pre-AIA 35 U.S.C. 112, sixth paragraph: An element in a claim for a combination may be expressed as a means or step for performing a specified function without the recital of structure, material, or acts in support thereof, and such claim shall be construed to cover the corresponding structure, material, or acts described in the specification and equivalents thereof. This application includes one or more claim limitations that do not use the word “means,” but are nonetheless being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, because the claim limitation(s) uses a generic placeholder that is coupled with functional language without reciting sufficient structure to perform the recited function and the generic placeholder is not preceded by a structural modifier. Such claim limitation(s) is/are: a grinding device in claim 1; an immersion device in claim 1; and a crushing device in claim 1; water adding devices of claim 2, an air blowing device in claim 16, and a heating device in claim 10. Because this/these claim limitation(s) is/are being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, it/they is/are being interpreted to cover the corresponding structure described in the specification as performing the claimed function, and equivalents thereof. The immersion device is understood to comprise at least a conveyance channel or pipe for immersing and conveying the soybeans (Specification, p. 2, line 21 and 25). If applicant does not intend to have this/these limitation(s) interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, applicant may: (1) amend the claim limitation(s) to avoid it/them being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph (e.g., by reciting sufficient structure to perform the claimed function); or (2) present a sufficient showing that the claim limitation(s) recite(s) sufficient structure to perform the claimed function so as to avoid it/them being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 1-19 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. Claiming 1,2,and 17 recite a “grinding device”. Applicant does not describe what this device comprises. This is only depicted as a black box in fig. 1 (element 5). For purposes of examination, this is understood to be a “grinder”. Claim 2 recites “water adding devices”. Applicant does not describe what these devices comprise. For purposes of examination, these are understood to be “water supplies to add water”. Claim 10 recites a heating device. Applicant does not describe what this device comprises. For purposes of examination, this is understood to be a “heater”. Claim 16 recites an “air blowing device”. Applicant does not describe what this device comprises. For purposes of examination, this is understood to be an air blower. Claims 1-19 rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the enablement requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention, nor which was not described in the specification in such a way as to enable one skilled in the art to which it pertains, or with which it is most nearly connected, to make and/or use the invention. Claim 1 recites “a crushing device”. Applicant does not describe what this crushing device comprises. This is only depicted as a black box in fig. 1 (element 9). For purposes of examination, this is interpreted as any device capable of at least some crushing. The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 7 and 13 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claims 7 and 13 recite “the lower part” and “the upper part”. There is insufficient antecedent bases for these in the claims. For purposes of examination, these are understood as “a lower part” and “an upper part”. Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. [Examiner’s note: Strikethrough indicates that the limitation is not disclosed by the reference] Claim 1, 3, 5- 8, and 12-14 are rejected under 35 U.S.C. 103 as being unpatentable over Harada Sangyo Co Ltd. (Japanese Patent Publication JP2012187058A; in applicant’s IDS; English machine-translation of Description attached; herein “Harada”) in view of Atinaja (U.S. Application Publication 2021/ 0022557) and Nakano (U.S. Patent Application Publication 2002/01769258). Regarding claim 1, Harada discloses a tofu product production device comprising: an immersion device (fig. 2, immersing device 16) that immerses the ground soybeans in water a crushing device (Harada, Fig. 1, grinder 44, this is the crushing device for grinding the said soaked ground-growing soybean) that crushes the swollen soybeans to obtain raw soybean paste, wherein the ground soybeans are immersed for a short period of time in the immersion device (¶0042; some is put back in the immersion device). However, Hamada does not disclose “a grinding device that grinds raw soybeans to obtain ground soybeans”; nor, wherein in the immersion device, with the soybeans in water, “obtaining swollen soybeans swollen to at least 1.2 to 2.4 times”. However, Hamada does teach that the immersing device is provided with “chopped” raw soybean (¶0030). And Atinaja, for instance, teaches that a griding device can “chop” beans for such purposes for further processing into bean butters and pastes and the like (Atinaja, ¶0052) . Thus, it would have been obvious to one having ordinary skill in the art before the effective filing date of the invention to modify Hamada in view of Nakano with the teachings of Atinaja, to provide a “grinding device” for pre-grinding/chopping the soybeans before putting them into the hopper leading into the immersing device, to provide the chopped/ ground soybeans to the hopper, in order to improve water absorption and shorten immersion time (¶0014). Regarding “obtaining swollen soybeans swollen to at least 1.2 to 2.4 times”, Hamada already teaches the immersion device and soaking the soybeans and, and it would only be a matter of time in the immersion device, and the properties of the soybean that would account for the soybeans swelling/ absorption of water. The device is fully capable of achieving the claimed swollenness, and the manner of operating a device does not differentiate an apparatus claim from the prior art (see MPEP 2114(II). As well, for instance, in making their tofu product, Nakano teaches having the 100 kg of soybeans swell to 220kg, which is a swell factor of 2.2, which is within the claimed range. Thus, it would have been obvious to one having ordinary skill in the art before the effective filing date of the invention to keep the soybeans soaking, enabling them to swell to within the claimed range, in order to process the beans to create a conventional tofu product and the swelling of the soybeans with water is a conventional method of making this product. Regarding claim 3, Harada in view of Atinaja and Nakano teaches all the limitations of claim 1, as above, and further teaches a tofu product production device wherein the immersion device is provided with at least one water adding device (Harada, 18, ¶0032) that adds water according to a swelling speed of the ground soybeans. Regarding claim 5, Harada in view of Atinaja and Nakano teaches all the limitations of claim 1, as above, and further teaches a tofu product production device wherein the immersion device has a conveyance channel (Harada, Fig. 2, long tank 20 is the channel) for conveying the ground soybeans while the ground soybeans are immersed in water, and the conveyance channel conveys the ground soybeans from a lower part to an upper part in a direction of gravity (fig. 1, lower part of 16 to upper part of the next process). Regarding claim 6, Hamada in view of Atinaja and Nakano teaches all the limitations of claim 1, as above, and further teaches a tofu product production device wherein the immersion device includes a pipe (Hamada, 20) configuring a conveyance channel for conveying the ground soybeans while the ground soybeans are immersed in water, and a pump (Hamada, Fig. 1, 32 and 34 that move/pump the water) that supplies the ground soybeans and the water toward the pipe. Regarding claim 7, Hamada n view of Atinaja and Nakano teaches all the limitations of claim 6, as above, and further teaches a tofu product production device wherein the pipe is formed such that the ground soybean is directed from the lower part to the upper part in the direction of gravity (Hamada, fig. 1, dropping from 36 to get to P and eventually get to 42, initially going in the direction of gravity). Regarding claim 8, Hamada in view of Atinaja and Nakano teaches all the limitations of claim 6, as above, and further teaches wherein the pipe (Hamada, 20) has a folded portion with an angle of 180 degrees or less (Hamada, fig. 1, where the pipe lets the soybean in, connecting 20 to 12, that is a “folded portion” with a turn of 180 degrees; or where 20 turns into 36.). Regarding claim 12, Hamada in view of Atinaja and Nakano teaches all the limitations of claim 1, as above, and further teaches a tofu product production device wherein the immersion device includes a trough (20) configuring a conveyance channel for conveying the ground soybeans while the ground soybeans are immersed in water (Hamada, ¶0038), and a screw provided inside the trough (rotating shaft 22), and the ground soybeans and water supplied into the trough travel through the inside of the trough as the screw rotates. Regarding claim 13, Hamada in view of Atinaja and Nakano teaches all the limitations of claim 12, as above, and further teaches a tofu product production device wherein the trough is formed such that the ground soybean is directed from the lower part to the upper part in the direction of gravity (Hamada, fig. 1, dropping from 36 to get to P and eventually get to 42, initially going in the direction of gravity). Regarding claim 14, Hamada in view of Atinaja and Nakano teaches all the limitations of claim 12, as above, and further teaches a tofu product production device wherein one or a plurality of the screws (Hamada, 24) are provided inside the trough. Claim 2 is rejected under 35 U.S.C. 103 as being unpatentable over Harada Sangyo Co Ltd. (Japanese Patent Publication JP2012187058A; in applicant’s IDS; English machine-translation of Description attached; herein “Harada”) in view of Atinaja (U.S. Application Publication 2021/ 0022557) and Nakano (U.S. Patent Application Publication 2002/01769258) and further in view of Matsuura (U.S. Patent 4,636,398). Regarding claim 2, Harada in view of Atinaja and Nakano teaches all the limitations of claim 1, as above, but does not further teach a tofu product production device wherein the grinding device is provided with one or more water adding devices for grinding the raw soybeans while water is added. Harada and Atinaja, though, already teach that the beans may be chopped/ground before the immersion/soaking step. However, Matsuura teaches how to grind soybeans, and he teaches “wherein the grinding device is provided with one or more water adding devices for grinding the raw soybeans while water is added.” (Matsuura, column 1 line 66 - column 2 line 1). Thus, it would have been obvious to one having ordinary skill in the art before the effective filing date of the invention, to modify Harada in view of Atinaja and Nakano, to add the teachings of Matsuura, to do the initial griding in a conventional method, by adding water, in order to wash off the beans and remove the “soluble saccharides” in order to better prepare the beans for tofu and for the soaking in a conventional method without unexpected results, as Harada and Atinaja already teach that the beans may be chopped/ground before the immersion/soaking step, so this adding water would help prepare them. . Claim 4 is rejected under 35 U.S.C. 103 as being unpatentable over Harada Sangyo Co Ltd. (Japanese Patent Publication JP2012187058A; in applicant’s IDS; English machine-translation of Description attached; herein “Harada”) in view of Atinaja (U.S. Application Publication 2021/ 0022557) and Nakano (U.S. Patent Application Publication 2002/01769258) and further in view of Ismagilov (U.S. Patent Application Publication 2016/ 0256870) and Struble (U.S. Patent 2,232,282). Regarding claim 4, Harada in view of Atinaja and Nakano teach all the limitations of claim 1, as above, but do not further teach a tofu product production device wherein the immersion device has a conveyance channel for conveying the ground soybeans while the ground soybeans are immersed in water, and a cross-sectional area of the conveyance channel increases in accordance with volumetric expansion due to swelling of the ground soybeans. However, Struble teaches bean expansion in water, as is well known, and the need to accommodate for such expansion (Struble, p. 3, column 2, lines 50-60), and Ismagilov teaches having a channel with a tapered/expanding diameter/cross section in order to accommodate expanding beans or product (Ismagilov, ¶60, “duct can be …tapered”), in order to make sure there is enough room for the product to expand and at the same time, move it through the further food processing. Thus, it would have been obvious to one having ordinary skill in the art before the effective filing date of the invention, to modify Harada in view of Atinaja and Nakano with the teachings of Struble and Ismagilov, to have the channel diameter increase in size as it moves along, in order to make sure there is enough room for the product to expand and at the same time, move it along to further food processing. Claim 17 is rejected under 35 U.S.C. 103 as being unpatentable over Harada Sangyo Co Ltd. (Japanese Patent Publication JP2012187058A; in applicant’s IDS; English machine-translation of Description attached; herein “Harada”) in view of Atinaja (U.S. Application Publication 2021/ 0022557) and Nakano (U.S. Patent Application Publication 2002/01769258) and further in view of Iwamoto (U.S. Patent Application Publication 2007/ 0128335). Regarding claim 17, Harada in view of Atinaja and Nakano teaches all the limitations of claim 1, as above, but does not further teach a tofu product production device comprising: a rotary positive displacement single shaft eccentric screw pump to which the ground soybeans obtained by the grinding device and water are supplied, wherein the rotary positive displacement single shaft eccentric screw pump supplies the ground soybeans and the water to the immersion device while mixing the ground soybeans and the water. However, such a pump, such as a mohno pump (Applicant’s specification, ¶79) , is conventional in the art to move a soybean slurry product, such as in Iwamoto (Iwamoto, ¶0071). Thus, it would have been obvious to one having ordinary skill in the art before the effective filing date of the invention, to modify Harada in view of Atinaja and Nakano with the teaching of Iwamoto, to have the claimed conventional pump moving the ground beans to the immersion device, in order to move a slurried mixture in a conventional way with the expected result of moving the product consistently. No art is currently being applied against claims 9-11, 15, 16, and 18-19. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Please see attached form PTO-892. Any inquiry concerning this communication or earlier communications from the examiner should be directed to LAWRENCE H SAMUELS whose telephone number is (571)272-2683. The examiner can normally be reached 9AM-5PM M-F. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Ibrahime Abraham can be reached at 571-270-5569. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /LAWRENCE H SAMUELS/Examiner, Art Unit 3761 /IBRAHIME A ABRAHAM/Supervisory Patent Examiner, Art Unit 3761
Read full office action

Prosecution Timeline

Oct 20, 2023
Application Filed
Jan 20, 2026
Non-Final Rejection — §103, §112 (current)

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Prosecution Projections

1-2
Expected OA Rounds
56%
Grant Probability
95%
With Interview (+38.8%)
3y 10m
Median Time to Grant
Low
PTA Risk
Based on 488 resolved cases by this examiner. Grant probability derived from career allow rate.

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