Prosecution Insights
Last updated: October 22, 2026
Application No. 18/705,697

CONSTRUCTION ELEVATOR AND METHOD OF EXTENDING COMPENSATING ROPE FOR CONSTRUCTION ELEVATOR

Final Rejection §102
Filed
Apr 29, 2024
Priority
Nov 12, 2021 — nonprovisional of PCTJP2021041664
Examiner
TRAN, DIEM M
Art Unit
3654
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Hitachi Ltd.
OA Round
2 (Final)
80%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
94%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allowance Rate
542 granted / 677 resolved
+28.1% vs TC avg
Moderate +14% lift
Without
With
+13.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
23 currently pending
Career history
711
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
39.2%
-0.8% vs TC avg
§102
32.4%
-7.6% vs TC avg
§112
23.9%
-16.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 677 resolved cases

Office Action

§102
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 . This is the Final Office Action on the merits of Application No. 18/705697, filed on 04/29/2024. Claims 1-7 are still pending in the application. 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) 1-3, 5 and 7 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by US Patent No. 9,561,935 to Perala (henceforth referred to as Perala). Regarding claims 1-3 and 5, Perala discloses a construction elevator (i.e. Fig. 1a) comprising: a compensating rope reel (i.e. Mark up of Fig. 1c) around a compensating rope (i.e. Mark up of Fig. 1c) is wound; a rising/lowering unit (i.e. Fig. 1c, ref. 1) around which the compensating rope drawn out from the compensating rope real is wound, the rising/lowering unit being configured to rise and lower (i.e. Fig. 1a, up and down arrow next to ref. 1) in a hoistway (i.e. Fig. 1c, ref. S) of a building structure; a pulley (i.e. Mark up of Fig. 1c) that is disposed between the compensating rope reel and the rising/lowering unit along the compensating rope and around which the compensating rope drawn out from the compensating rope reel is wound; at least one or more first rope-gripping devices (i.e. Mark up of Fig. 1c) that releasably grip the compensating rope on a side of the compensating rope reel with respect to the pulley; and at least one or more second rope-gripping devices (i.e. Mark up of Fig. 1c) that releasably grip the compensating rope on a side of the rising/lowering unit with respect to the pulley, wherein the pulley is movably supported along a rising/lowering direction of the rising, lowering unit (i.e. Fig. 1a, pulley also moves along up and down direction along with ref. 1). Further comprising: a machine room unit (i.e. Fig. 1a, ref. 3 and 7) provided with a hoisting machine (i.e. Fig. 1a, ref. 4) that raises and lowers the rising/lowering unit; and a lifting machine (i.e. Fig. 1c, ref. 20) that supports the machine room unit in a manner such that the machine room unit can be lifted. Wherein the pulley is lifted independently of the machine room unit (i.e. Fig. 1c, pully and ref. 1 is lifted by ref. 4 and can move up and down relative to ref. 3). Wherein the machine room unit is divided into a plurality of machine rooms (i.e. Fig. 1a-1c, ref. 3 and 7 are two independent machine units). PNG media_image1.png 682 369 media_image1.png Greyscale Regarding claim 7, Perala discloses a method of extending a compensating rope of a construction elevator (i.e. Fig. 1a-1c) including: a compensating-rope reel (i.e. Mark up of Fig. 1c) around which a compensating rope (i.e. Make up of Fig. 1c) is wound; a rising/lowering unit (i.e. Fig. 1c, ref. 1) around which the compensating rope drawn out from the compensating rope reel is wound, the rising lowering unit being configured to rise and lower in a hoistway (i.e. Fig. 1c, ref. S) of a building structure; a pulley (i.e. Mark up of Fig. 1c) that is disposed between the compensating rope reel and the rising/lowering unit along the compensating rope and around which the compensating rope drawn out from the compensating rope reel is wound; a first rope gripping device (i.e. Mark up of Fig. 1c) that releasably grips the compensating rope on a side of the compensating rope reel with respect to the pulley; and a second rope gripping device (i.e. Mark up of Fig. 1c) that releasably grips the compensating rope on a side of the rising/lowering unit with respect to the pulley, the method comprising: a step of gripping the compensating rope by the second rope gripping device (i.e. Fig. 1b, second gripping device is darkened meaning activated); a step of releasing gripping of the compensating rope by the first rope gripping device (i.e. Fig. 1c, first gripping device is white meaning deactivated); raising the pulley to a predetermined height (i.e. Fig. 1c, pulley is raised upward) along a rising/lowering direction of the rising/lowering unit, and drawing out the compensating rope from the compensating rope reel (i.e. given); a step of, after raising the pulley to the predetermined height, gripping the compensating rope by the first rope gripping device and releasing gripping of the compensating rope by the second rope gripping device (i.e. Fig. 1a, first gripping device is darkened and the second gripping device is white); and a step of raising a machine room unit provided with the second rope gripping device to a predetermined height (i.e. Fig. 1a-1c, ref. 3 and 7 are raised upward). Allowable Subject Matter Claims 4 and 6 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. Response to Arguments Applicant's arguments filed 07/02/2026 have been fully considered but they are not persuasive. To summarize, Applicant argues on page 7, line 3-page 8, line 15 that Perala does not teach a compensating rope for adjusting weight balance of an elevator and that the objective of the inventions are different. This argument is not persuasive because it is an intended use argument. Perala teaches all the structural limitations of claims 1-3, 5 and 7 and thus the rejection is maintained. To summarize, Applicant argues on page 8, line 16-24 that Perala teaches compensating rope is not essential for the operation of the invention. This argument is not persuasive because although Perala teaches the compensating rope is optional, it does not teach away from the use of compensating rope and thus the rejection is maintained. To summarize, Applicant argues on page 8, line 25-page 9, line 3 that Perala does not teach a first and a second rope gripping device nor teach a movable pulley supported on the car. This argument is not persuasive because the mark up of Fig. 1c show the movable pulley attached to the car and the first and second gripping devices on the compensating rope along the compensating rope reel. Therefore, the rejection is maintained. Conclusion THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to DIEM M TRAN whose telephone number is (571)270-7825. The examiner can normally be reached M 9-5, W-F 10-2. 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, Michael Mansen can be reached at 571-272-6608. 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. /DIEM M TRAN/Examiner, Art Unit 3654
Read full office action

Prosecution Timeline

Apr 29, 2024
Application Filed
Apr 07, 2026
Non-Final Rejection mailed — §102
Jul 02, 2026
Response Filed
Aug 26, 2026
Final Rejection mailed — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12767487
CAR DOOR DEVICE FOR AN ELEVATOR, AND AN ELEVATOR
1y 11m to grant Granted Oct 20, 2026
Patent 12767505
SUPPORT DEVICE FOR A LIFTING PLATFORM, LIFTING PLATFORM WITH A SUPPORT DEVICE
1y 7m to grant Granted Oct 20, 2026
Patent 12759844
REVERSIBLE DOOR INTERLOCK FOR ELEVATORS
2y 2m to grant Granted Oct 13, 2026
Patent 12753048
ELEVATOR
1y 9m to grant Granted Oct 06, 2026
Patent 12747137
CAR OF ELEVATOR, AND ELEVATOR
1y 8m to grant Granted Sep 29, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
80%
Grant Probability
94%
With Interview (+13.5%)
2y 6m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 677 resolved cases by this examiner. Grant probability derived from career allowance rate.

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