Prosecution Insights
Last updated: April 19, 2026
Application No. 18/657,805

NECKING METHOD, NECKING APPARATUS, AND BATTERY MANUFACTURING DEVICE

Non-Final OA §102
Filed
May 08, 2024
Examiner
EKIERT, TERESA M
Art Unit
3725
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
OA Round
1 (Non-Final)
79%
Grant Probability
Favorable
1-2
OA Rounds
3y 0m
To Grant
82%
With Interview

Examiner Intelligence

Grants 79% — above average
79%
Career Allow Rate
902 granted / 1137 resolved
+9.3% vs TC avg
Minimal +3% lift
Without
With
+2.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
27 currently pending
Career history
1164
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
32.7%
-7.3% vs TC avg
§102
29.6%
-10.4% vs TC avg
§112
32.9%
-7.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1137 resolved cases

Office Action

§102
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 . Claim Rejections - 35 USC § 102 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 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. Claims 1-6 are rejected under 35 U.S.C. 102(a)(1)as being anticipated by Bressan et al. (hereafter Bressan”)(US Patent 4,781,047). With regards to claim 1, Bressan discloses a necking method, for forming a necked portion on a shell with an open end, comprising steps of: forming an annular groove (115) on the shell, wherein the annular groove extends in a circumferential direction of the shell, as seen in Figures 4A-4B; and expanding a width of the annular groove towards the open end to form the necked portion, as seen in Figures 4C-E [described in Column 8, lines 50 – Column 9, lines 25]. With regards to claim 2, Bressan discloses wherein the step of forming an annular groove on the shell comprises: limiting the open end when forming the annular groove, so as to limit outward movement of the open end. With regards to claim 3, Bressan discloses wherein the step of expanding a width of the annular groove towards the open end to form the necked portion comprises: releasing the limit on the open end when expanding the width of the annular groove, so that the open end is folded outward to form a flanged portion (123), Column 9, lines 20-40. With regards to claim 4, Bressan discloses further comprising: flattening the flanged portion [Column 9, lines 40-60]. With regards to claim 5, Bressan discloses wherein the step of forming an annular groove on the shell comprises: driving a first roller (11) to rotate around the shell and feed in a radial direction of the shell, so as to form the annular groove on the shell [described in Column 8, lines 50 – Column 9, lines 25]. With regards to claim 6, Bressan discloses wherein the first roller (11) has a first surface and a second surface opposite in its axial direction, and the first surface is farther from the open end than the second surface, as seen in at least Figure 1; and the step of forming an annular groove on the shell further comprises: driving the shell to move axially after driving the first roller to rotate around the shell and feed in the radial direction of the shell, so that the shell is deformed, making the first surface attach to a side wall of the annular groove facing the first surface [described in Column 8, lines 50 – Column 9, lines 25]. Claims 8-10 and 16-18 are rejected under 35 U.S.C. 102(a)(1)as being anticipated by Shibasaka (US Patent 5,228,321). With regards to claim 8, Shibasaka discloses a necking apparatus, configured for forming a necked portion on a shell with an open end, comprising: a first roller (4), configured to feed in a radial direction of the shell to form an annular groove on the shell; and a second roller (3), configured to feed in the radial direction of the shell to form a necked portion and a flanged portion on the shell, wherein the first roller has a first surface and a second surface opposite in its axial direction, and the second roller has a third surface and a fourth surface opposite in its axial direction, as seen in Figure 7a, wherein the third surface is farther from the open end than the fourth surface, and a plane where the third surface is located is between the first surface and the second surface, as seen in at least Figure 7a. With regards to claim 9, Shibasaka discloses wherein a thickness of the first roller (4) is less than that of the second roller (3), as seen in at least Figure 7a. With regards to claim 10, Shibasaka discloses further comprising: an inner mold (2), configured for supporting the shell from interior of the shell, wherein the first roller and the second roller are disposed on a circumference of the inner mold, as seen in Figure 7a. With regards to claim 16, Shibasaka discloses wherein the first roller and the second roller are spaced in a circumferential direction of the inner mold, as seen in at least Figure 7a. With regards to claim 17, Shibasaka discloses further comprising: a support member (7), configured for supporting the shell. With regards to claim 18, Shibasaka discloses further comprising: a first driving member (51), configured for driving the support member up and down [ Column 5, lines 5-40]. Claims 8-10 and 16-19 are rejected under 35 U.S.C. 102(a)(1)as being anticipated by Teramoto (US 2009/0151863). With regards to claim 8, Teramoto discloses a necking apparatus, configured for forming a necked portion on a shell with an open end, comprising: a first roller (27), configured to feed in a radial direction of the shell to form an annular groove on the shell; and a second roller (15), configured to feed in the radial direction of the shell to form a necked portion and a flanged portion on the shell, wherein the first roller has a first surface and a second surface opposite in its axial direction, and the second roller has a third surface and a fourth surface opposite in its axial direction, as seen in Figure 5, wherein the third surface is farther from the open end than the fourth surface, and a plane where the third surface is located is between the first surface and the second surface, as seen in at least Figure 5. With regards to claim 9, Teramoto discloses wherein a thickness of the first roller (27) is less than that of the second roller (15), as seen in at least Figure 5. With regards to claim 10, Teramoto discloses further comprising: an inner mold (12), configured for supporting the shell from interior of the shell, wherein the first roller and the second roller are disposed on a circumference of the inner mold, as seen in Figure 5. With regards to claim 16, Shibasaka discloses wherein the first roller and the second roller are spaced in a circumferential direction of the inner mold, as seen in at least Figure 5. With regards to claim 17, Shibasaka discloses further comprising: a support member (8), configured for supporting the shell. With regards to claim 18, Shibasaka discloses further comprising: a first driving member (9), configured for driving the support member up and down [paragraph 0050]. With regards to claim 19, Shibasaka discloses battery manufacturing device, comprising the necking apparatus according to claim 8, wherein the necking apparatus is configured for forming the necked portion on a battery shell (5), as described in at least the Abstract. Allowable Subject Matter Claims 7 and 11-15 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure and further show the state of the art: US Patents 4,606,207 & 3,688,538. Any inquiry concerning this communication or earlier communications from the examiner should be directed to TERESA M EKIERT whose telephone number is (571)272-1901. The examiner can normally be reached Monday-Friday 8AM-4:30PM EST. 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, Christopher Templeton can be reached at 571-270-1477. 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. /TERESA M EKIERT/Primary Examiner, Art Unit 3725
Read full office action

Prosecution Timeline

May 08, 2024
Application Filed
Mar 21, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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METHOD FOR PREVENTION OF PREMATURE EDGE FRACTURE AT DRAW BEAD
2y 5m to grant Granted Apr 14, 2026
Patent 12599947
ROLLER EXCHANGE MECHANISM FOR REDUCTION ROLL APPARATUS
2y 5m to grant Granted Apr 14, 2026
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2y 5m to grant Granted Mar 24, 2026
Patent 12580172
ROLL PRESS DEVICE, AND CONTROL DEVICE
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BLIND RIVET SETTING TOOL
2y 5m to grant Granted Mar 10, 2026
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
79%
Grant Probability
82%
With Interview (+2.9%)
3y 0m
Median Time to Grant
Low
PTA Risk
Based on 1137 resolved cases by this examiner. Grant probability derived from career allow rate.

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