Prosecution Insights
Last updated: October 02, 2026
Application No. 19/018,033

Arrangement of Helical Tubes for Efficient Packing and Apparatus Implementing the Same

Non-Final OA §102§112
Filed
Jan 13, 2025
Priority
Dec 06, 2022 — provisional 63/430,484 +1 more
Examiner
LANE, DEVON
Art Unit
Tech Center
Assignee
Neal Technologies Inc.
OA Round
1 (Non-Final)
56%
Grant Probability
Moderate
1-2
OA Rounds
1y 7m
Est. Remaining
70%
With Interview

Examiner Intelligence

Grants 56% of resolved cases
56%
Career Allowance Rate
441 granted / 790 resolved
-4.2% vs TC avg
Moderate +14% lift
Without
With
+14.1%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
37 currently pending
Career history
828
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
54.0%
+14.0% vs TC avg
§102
17.4%
-22.6% vs TC avg
§112
27.0%
-13.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 790 resolved cases

Office Action

§102 §112
DETAILED ACTION 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. 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. Claim 2 is 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. In claim 2, it is unclear what “diameter length” and “tube diameter length” mean. It is also unknown which diameter is referred to by “diameter length” as two diameters have been defined. Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claim(s) 1-4 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Neal (US 2017/0175684). Regarding claim 1, Neal teaches first (70), second (74), and third (72) bundles each comprising: a set of three (Para. [0034] stating that each bundle may have an increased number of tubes despite being illustrated with fewer) tubes (78-88) to allow a first fluid tow flow therethrough (from 12 to 14), the tubes each having an inlet forming a set of inlets (attached to 12) and an outlet forming a set of outlets (attached to 14) attached to inlet and outlet supports (12 and 14), each tube following a helical path along a common helical axis (100, 102, 104; Para. [0030]) the tubes having the same helical twist direction (within each bundle), helical pitch, helical radius, and symmetric peaks and valleys along the bundle length (Para. [0030]); the first and second bundles have the same twist direction (70, 74; Para. [0030]) and the third bundle has the opposite twist direction (72; Para. [0030]); a shell surrounds the bundles (28) and has inlet and outlet ports for flowing the second fluid through (30, 32) and past the bundles along the bundle length (see Fig. 1); helical axis of the bundles are parallel to and radially offset from each other (fig. 7) and the bundles are positioned for bundle overlap so that peaks of each bundle are in the valleys between the peaks of each adjacent bundle (Fig. 7). Regarding claim 2, each bundle has a coil diameter (108-112), a tube diameter (“d”; Fig. 7) and a bundle center at the bundle axis (100-104) and the distance between the bundle centers is less than the sum of the bundle diameters (Fig. 7; e.g. distance from 100 to 102). Regarding claim 3, while illustrating only arrays of 9 (Fig. 5) and 4 (Fig. 8) bundles, Neal’s invention encompasses any number of bundles in an array (Para. [0029]; “in linear arrays of any number of tube bundles”). Neal teaches bundles each comprising: a set of three (Para. [0034] stating that each bundle may have an increased number of tubes despite being illustrated with fewer) tubes (78-88) to allow a first fluid tow flow therethrough (from 12 to 14), the tubes each having an inlet forming a set of inlets (attached to 12) and an outlet forming a set of outlets (attached to 14) attached to inlet and outlet supports (12 and 14), each tube following a helical path along a common helical axis (100, 102, 104; Para. [0030]) the tubes having the same helical twist direction (within each bundle), helical pitch, helical radius, and symmetric peaks and valleys along the bundle length (Para. [0030]); a shell surrounds the bundles (28) and has inlet and outlet ports for flowing the second fluid through (30, 32) and past the bundles along the bundle length (see Fig. 1); helical axis of the bundles are parallel to and radially offset from each other (fig. 7) and the bundles are positioned for bundle overlap so that peaks of each bundle are in the valleys between the peaks of each adjacent bundle (Fig. 7). As illustrated in Figs. 7-8, these bundles are arranged in a regular array. Per the row and column lines in the annotated Figure below, larger arrays of Neal’s invention are formed in rows of bundles having the same helical twist direction within the row with each row alternating in twist direction from the ones next to it. PNG media_image1.png 769 758 media_image1.png Greyscale Regarding claim 4, as previously stated, Neal’s invention encompasses any number of bundles in an array (Para. [0029]; “in linear arrays of any number of tube bundles”). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Devon Lane whose telephone number is (571)270-1858. The examiner can normally be reached M-Th, 9-4. 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, Jerry-Daryl Fletcher can be reached at 571.270.5054. 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. /DEVON LANE/ Primary Examiner, Art Unit 3763
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Prosecution Timeline

Jan 13, 2025
Application Filed
Sep 02, 2026
Non-Final Rejection mailed — §102, §112 (current)

Precedent Cases

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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
56%
Grant Probability
70%
With Interview (+14.1%)
3y 4m (~1y 7m remaining)
Median Time to Grant
Low
PTA Risk
Based on 790 resolved cases by this examiner. Grant probability derived from career allowance rate.

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