Prosecution Insights
Last updated: July 17, 2026
Application No. 18/832,745

WATER FILLING AND DRAINAGE TEST METHOD AND DEVICE FOR PREFABRICATED CRACK-CONTAINING REINFORCED CONCRETE LINING PRESSURE TUNNEL

Non-Final OA §112
Filed
Jul 24, 2024
Priority
Sep 26, 2022 — CN 202211174554.4 +1 more
Examiner
HINZE, LEO T
Art Unit
Tech Center
Assignee
Guangxi University
OA Round
1 (Non-Final)
53%
Grant Probability
Moderate
1-2
OA Rounds
1y 2m
Est. Remaining
63%
With Interview

Examiner Intelligence

Grants 53% of resolved cases
53%
Career Allowance Rate
408 granted / 773 resolved
-7.2% vs TC avg
Moderate +11% lift
Without
With
+10.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
16 currently pending
Career history
792
Total Applications
across all art units

Statute-Specific Performance

§101
8.6%
-31.4% vs TC avg
§103
69.5%
+29.5% vs TC avg
§102
13.6%
-26.4% vs TC avg
§112
6.6%
-33.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 773 resolved cases

Office Action

§112
DETAILED ACTION Claim Objections Claims 1-7 are objected to because of the following informalities: Regarding claim 1, “the crack” of line 19 lacks a proper antecedent basis; Regarding claim 1, “the lining” of lines 33-34 lacks a proper antecedent basis; Regarding claim 7, “the inner cavity drainage joint” of lines 9-10 lacks a proper antecedent basis; Regarding claim 7, “the crack” in line 28 lacks a proper antecedent basis; Regarding claim 7, “the steel bar” in line 31 lacks a proper antecedent basis; Regarding claim 7, “the lining” in line 31 lacks a proper antecedent basis. Appropriate correction is required. 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. Claims 1-7 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. Regarding claim 1, the claim recites “reinforced concrete lining pressure tunnel with prefabricated crack” in lines 1-2, “a reinforced concrete lining with a prefabricated crack” in line 3, “the reinforced concrete lining” in line 22, “the reinforced concrete lining with the prefabricated crack” in line 26, and multiple instances of “the crack” (e.g., line 19). The lack of consistency regarding the nomenclature of these structural elements makes the scope of the claim indefinite, because it is not clear if the prefabricated crack is also the crack, for example, or the reinforced concrete lining with predetermined crack is the same as the reinforced concrete lining. The crack issue is also present in claims 3, 5, and 7. Further regarding claim 1, recitation of “the lining” in lines 33-34 and “a pressure tunnel lining” in lines 41-42 makes the scope of the claim indefinite, because it is not clear if the lining and the pressure tunnel lining the same as the previously recited reinforced concrete lining with prefabricated crack, or separate and distinct linings. The lining issue is also present in claims 3 and 7. Regarding claim 2, the scope of the claim is indefinite because it is not clear if the “a crack” of line 6 is the same as the prefabricated crack or the crack recited in claim 1, or a separate and distinct crack. Allowable Subject Matter Claims 1 and 7 would be allowable if rewritten or amended to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, and the claim objections set forth in this Office action. Claims 3-6 would also be allowable if the rejections of and objections to claim 1 are overcome. Claim 2 would be allowable if rewritten to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, and the claim objections set forth in this Office action and to include all of the limitations of the base claim and any intervening claims. The following is a statement of reasons for the indication of allowable subject matter: Regarding claim 1, the claim is deemed to be directed to a nonobvious difference over CN 110082218 A. Claim 1 comprises a cylindrical body, a reinforced concrete lining with a prefabricated crack, a surrounding rock, a geotextile, a front flange, a rear flange, and monitoring instruments; wherein the cylindrical body is a rigid metal cylinder, and a wall thickness dthreshold of the cylindrical body satisfies the following requirements: dthreshold≥1.05d, wherein the surrounding rock abuts against an inner wall of the cylindrical body, the reinforced concrete lining with prefabricated crack is provided on an inner side of the surrounding rock, and the front flange and the rear flange are respectively fixed to both ends of the cylindrical body to form a closed internal water loading cavity capable of being filled and drained; wherein the monitoring instruments include a crack gauge configured to monitor a change in a width of the crack during the filling and draining process, a reinforcement meter, a strain gauge, an osmometer, and a soil pressure gauge that are each configured to monitor an operation condition in the pressure tunnel, and the monitoring instruments are provided in an inner wall of the crack, in the reinforced concrete lining, and between the reinforced concrete lining and the surrounding rock, so as to optimize the testing of concrete lining in tunnels. Regarding claim 7, the claim is deemed to be directed to a nonobvious difference over CN 110082218 A. Claim 7 comprises a cylindrical body, a reinforced concrete lining with a prefabricated crack, a surrounding rock, a geotextile, a front flange, a rear flange, and monitoring instruments; wherein the cylindrical body is a rigid metal cylinder, and a wall thickness dthreshold of the cylindrical body satisfies the following requirements: dthreshold≥1.05d, wherein the surrounding rock abuts against an inner wall of the cylindrical body, the reinforced concrete lining with prefabricated crack is provided on an inner side of the surrounding rock, and the front flange and the rear flange are respectively fixed to both ends of the cylindrical body to form a closed internal water loading cavity capable of being filled and drained; wherein the monitoring instruments include a crack gauge configured to monitor a change in a width of the crack during the filling and draining process, a reinforcement meter, a strain gauge, an osmometer, and a soil pressure gauge that are each configured to monitor an operation condition in the pressure tunnel, and the monitoring instruments are provided in an inner wall of the crack, in the reinforced concrete lining, and between the reinforced concrete lining and the surrounding rock, and filling and draining water into an internal water loading cavity formed by the test device step by step to simulate an operating state of water pressure loading and unloading in the pressure tunnel; connecting a pressurized water pump to an internal water loading joint of the front flange, filling the internal water loading cavity with water step by step, and opening the inner cavity drainage joint of the rear flange to drain the water step by step when step-by-step filling stage is completed; wherein a number of water filling steps, a total number of water filling steps, and a total number of filling and drainage steps when the water filling pressure is 0.5Mpa are as follows PNG media_image1.png 166 358 media_image1.png Greyscale , so as to optimize the testing of concrete lining in tunnels. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. US 20110187394 A1 discloses a method for determining damaged faulty and/or weak points in a structural seal. The seal is provided with an electrically conductive layer arranged inside or outside the structural seal and extends over substantially the entire surface of the structural seal and to which layer an electrical test voltage is applied. To establish the damaged, faulty and/or weak points, a further electrically conductive layer is used, which is electrically separated from the aforementioned electrically conductive layer by the structural seal and extends over substantially the entire surface of the structural seal. The level of the test voltage between the electrically conductive layers charged with voltage is selected such that when at least one electrically non-conductive damaged, faulty and/or weak point is present in the structural seal, the electrical disruptive strength is exceeded and an electric spark or arc is formed at the location of the damaged, faulty and/or weak point. Any inquiry concerning this communication or earlier communications from the examiner should be directed to LEO T HINZE whose telephone number is (571)272-2864. The examiner can normally be reached M-Th 9-2. 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, Stephen Meier can be reached on (571)272-2149. 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. /LEO T HINZE/ Patent Examiner AU 2853 13 June 2026 /STEPHEN D MEIER/Supervisory Patent Examiner, Art Unit 2853
Read full office action

Prosecution Timeline

Jul 24, 2024
Application Filed
Jun 18, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12680853
ENHANCED SUPERCRITICAL FLUID MEASUREMENT WITH VIBRATORY SENSORS
4y 2m to grant Granted Jul 14, 2026
Patent 12654434
METHOD OF OPERATING A FLEXOGRAPHIC PRINTING PRESS, FLEXOGRAPHIC PRINTING PRESS, SYSTEM, AND SLEEVE FOR A FLEXOGRAPHIC PRINTING FORME
4y 7m to grant Granted Jun 16, 2026
Patent 12652785
COOLING SYSTEM
3y 4m to grant Granted Jun 09, 2026
Patent 12582770
DRIP MONITORING SYSTEM AND METHOD THEREOF
4y 3m to grant Granted Mar 24, 2026
Patent 12571671
METHOD AND SYSTEM FOR BREATHER HEALTH ASSESSMENT FOR A TRANSFORMER BREATHER
3y 5m to grant Granted Mar 10, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2
Expected OA Rounds
53%
Grant Probability
63%
With Interview (+10.6%)
3y 2m (~1y 2m remaining)
Median Time to Grant
Low
PTA Risk
Based on 773 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month