Prosecution Insights
Last updated: April 19, 2026
Application No. 18/207,634

Seesaw-type feeding device for collecting solid suspended materials

Non-Final OA §112
Filed
Jun 08, 2023
Examiner
BETIT, JACOB F
Art Unit
1777
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Dalian University Of Technology
OA Round
1 (Non-Final)
35%
Grant Probability
At Risk
1-2
OA Rounds
4y 11m
To Grant
51%
With Interview

Examiner Intelligence

Grants only 35% of cases
35%
Career Allow Rate
53 granted / 151 resolved
-29.9% vs TC avg
Strong +16% interview lift
Without
With
+16.3%
Interview Lift
resolved cases with interview
Typical timeline
4y 11m
Avg Prosecution
27 currently pending
Career history
178
Total Applications
across all art units

Statute-Specific Performance

§101
11.2%
-28.8% vs TC avg
§103
42.6%
+2.6% vs TC avg
§102
23.4%
-16.6% vs TC avg
§112
19.9%
-20.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 151 resolved cases

Office Action

§112
DETAILED ACTION 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 . Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Information Disclosure Statement No Information Disclosure Statement has been filed. Specification/Drawings The drawings are objected to because: The cam does not have a part number. The plectrum does not have a part number. The support piece does not have a part number. The drive shaft does not have a part number. The tension mooring anchor chain does not have a part number. The connection assembly does not have a part number. Please provide part numbers in the specification and drawings. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as “amended.” If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. Claim Rejections - 35 USC § 112 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. Claims 1-8 are rejected under 35 U.S.C. 112(b) as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor regards as the invention. Claim 1 line(s) 1 sets forth the limitation “type”. The addition of the word "type" to an otherwise definite expression extends the scope of the expression so as to render it indefinite. Ex parte Copenhaver, 109 USPQ 118 (Bd. Pat. App. & Inter. 1955). See MPEP § 2173.05(b).III.E. Claim 4 line(s) 3 sets forth the limitation “the second end”. There is insufficient antecedent basis for this limitation in the claim. Perhaps the Applicant intended claim 4 to be dependent on claim 3. Claim 8 sets forth the limitation “in a first state, the escapement shaking assembly does not work, the material collection assembly naturally upwardly inclines from the material container to the collection pocket net; […] in a third state, the escapement shaking assembly stops working, the material collection assembly is restored to a natural upward inclined state under an action of dead weight.”. It is unclear how the third state of the material collection assembly is different from the first state. If the escapement shaking assembly “does not work”, it is also “stops working” and both the first state and the third state lead to the same result, which is the material collection assembly naturally upwardly inclines from the material container to the collection pocket net. Allowable Subject Matter Claims 1-8 have allowable subject matter over the prior art of record. The prior art neither teaches, suggests, nor makes obvious to one having ordinary skill in the art a seesaw feeding device for collecting solid materials suspended in a flow field comprising the combination of claimed elements. YOU (CN 113274785) discloses an immersed suspended solid matter enrichment flow guide cover device (title, Figs., see translation) and appears to discloses a material collection assembly including a container (implied by collection of suspended solids; L19-24), an annular water discharging screen mesh (Fig. 1 #4), and a delivery part (Fig. 1 #2). MOON (US 20190161368) discloses a spilled oil collecting apparatus. STIX (US 4053412) discloses a collecting device for a swimming pool comprising a net, an anchor and a chain. BATES (US 10323375) discloses a floating litter trap. Telephonic Inquiries Any inquiry concerning this communication or earlier communications from the examiner should be directed to LIAM A ROYCE whose telephone number is (571)270-0352. The examiner can normally be reached M-F 8:30-4:30. 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, VICKIE KIM can be reached at (571)272-0579. 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. /Liam Royce/ Examiner, Art Unit 1777 LIAM A. ROYCE Primary Examiner Art Unit 1777
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Prosecution Timeline

Jun 08, 2023
Application Filed
Sep 30, 2025
Non-Final Rejection — §112
Dec 31, 2025
Response Filed

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 9339688
CORE EXERCISE APPARATUS
2y 5m to grant Granted May 17, 2016
Patent 9043275
DATA SYNCHRONIZATION USING STRING MATCHING
2y 5m to grant Granted May 26, 2015
Patent 9026539
RANKING SUPERVISED HASHING
2y 5m to grant Granted May 05, 2015
Patent 9020954
RANKING SUPERVISED HASHING
2y 5m to grant Granted Apr 28, 2015
Patent 8819054
INFORMATION PROCESSING APPARATUS, METHOD FOR PROCESSING INFORMATION, AND STORAGE MEDIUM
2y 5m to grant Granted Aug 26, 2014
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
35%
Grant Probability
51%
With Interview (+16.3%)
4y 11m
Median Time to Grant
Low
PTA Risk
Based on 151 resolved cases by this examiner. Grant probability derived from career allow rate.

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