Prosecution Insights
Last updated: August 06, 2026
Application No. 18/839,602

ACOUSTIC TRANSIT-TIME FLOWMETER

Non-Final OA §102§103
Filed
Aug 19, 2024
Priority
Feb 21, 2022 — GB 2202309.7 +1 more
Examiner
WILLIAMS, JAMEL E
Art Unit
Tech Center
Assignee
Titan Enterprises Ltd.
OA Round
1 (Non-Final)
89%
Grant Probability
Favorable
1-2
OA Rounds
2y 3m
Est. Remaining
98%
With Interview

Examiner Intelligence

Grants 89% — above average
89%
Career Allowance Rate
849 granted / 957 resolved
+28.7% vs TC avg
Moderate +9% lift
Without
With
+9.4%
Interview Lift
resolved cases with interview
Typical timeline
4y 3m
Avg Prosecution
22 currently pending
Career history
970
Total Applications
across all art units

Statute-Specific Performance

§101
2.0%
-38.0% vs TC avg
§103
59.2%
+19.2% vs TC avg
§102
29.2%
-10.8% vs TC avg
§112
6.2%
-33.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 957 resolved cases

Office Action

§102 §103
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 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) 1-10, 14 and 21 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Koyano (U.S. 2013/0104667). Regarding claims 1, 14 and 21, Koyano teaches a transit-time-differential acoustic flowmeter structure, comprising: a housing comprising a first part 20 and a second part 30, the first part and the second part being releasably connectable to one another (see figures 1 and 3a), wherein at least one of the first part and the second part define a channel portion to receive a disposable flow tube 10, wherein the first part of the housing comprising a first pair of transducers 40 provided in spaced relation to one another. Regarding claim 2, Koyano further teaches wherein each one of the first pair of transducers 80 forms part of the channel portion for the first part of the housing (see figure 10). Regarding claim 3, Koyano further teaches wherein the second part of the housing comprises a second pair of transducers provided in spaced relation to one another (see figure 13; housing parts 20 and 30 each include ultrasonic transducers 80). Regarding claim 4, Koyano further teaches wherein each one of the second pair of transducers 80 forms part of the channel portion for the second part of the housing (see figure 13). Regarding claim 5, Koyano further teaches wherein the second pair of transducers 80 are aligned with the first pair of transducers 80 such that, when the first part of the housing 20 and the second part of the housing 30 are connected to one another, respective ones of the first pair of transducers are adjacent to corresponding respective ones of the second pair of transducers, whereby to form a pair of annular transducer elements for the flowmeter structure (see figure 13). Regarding claims 6 and 7, Koyano further teaches wherein each one of the first pair of transducers 80 sits proud of a surface 46 of the first part of the housing (see figure 10; rims 47 which seat ultrasonic transducer 80, are protruding from surface 46 of housing part 30; additionally see para. 0099, ‘Although not shown, the ultrasonic transmitting-receiving means 80 may be provided to both of the pair of the upper and lower sensor cases 20, 30’). Regarding claim 8, Koyano further teaches wherein the first part of the housing 20 and the second part of the housing 30 are hingedly connected 21 to one other. Regarding claim 9, Koyano further teaches wherein the first pair of transducers are provided in respective recesses provided in the first part of the housing (see para. 0103, ‘The ultrasonic transmitting-receiving means 80 configured as is explained above is arranged in a dent portion formed between a pair of rims 47 formed in the lower sensor case 30’). Regarding claim 10, Koyano further teaches wherein the second pair of transducers are provided in respective recesses provided in the second part of the housing (see figure 13). Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claim(s) 11 and 12 are rejected under 35 U.S.C. 103 as being unpatentable over Koyamo. Regarding claims 11 and 12, Koyamo does not explicitly teach wherein the transducers provided in the first and/or second housing part(s) are provided in respective recesses provided in the first part of the housing by way of interference fit and/or using an adhesive. Koyamo does teach that the transducers are embedded in each case (20, 30). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date to modify the device of Kayomo since the examiner takes Office Notice of the equivalence of an interreference fit and embedment for their use in the sensor retaining art and the selection of any of these known equivalents to retain acoustic transducers within a housing mold would be within the level of ordinary skill in the art. Claim(s) 16-20 are rejected under 35 U.S.C. 103 as being unpatentable over Koyamo in view of Imai et al. (U.S. 2002/0104386, hereafter referred to as Imai). Koyamo teaches all the claimed limitations except wherein the flow tube comprises a locating portion configured to engage with a recess provided in the channel portion; wherein the locating portion comprises at least one collar or sleeve provided on an outer surface of part of the flow tube; wherein the at least one collar or sleeve is an integral part of the flow tube; wherein the flow tube comprises a locating portion configured to abut an outside surface of the first part or the second part of the housing; and/or wherein the locating portion comprises a pair of collars or sleeves configured to abut opposing outside surfaces of the first part or the second part of the housing. Imai teaches a similar acoustic flowmeter comprising a flow tube 2, ultrasonic transducers 5, housing parts (54, 53) having recesses (54a, 53a) which form a channel for flow tube 2. Imai further teaches locating portions (sleeves) 6 provided on the outer surface of the flow tube 2. Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date to modify the device of Koyamo with the teaching of Imai, specifically, the use of sleeves/collars 6 on the flow tube, in order to prevent lateral movement of the flow tube within the housing. Additionally, One-piece construction, in place of separate elements fastened together, is a design consideration within the skill of the art. In re Kohno, 391 F.2d 959, 157 USPQ 275 (CCPA 1968); In re Larson, 340 F.2d 965, 144 USPQ 347 (CCPA 1965). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to JAMEL E WILLIAMS whose telephone number is (571)270-7027. The examiner can normally be reached on Monday-Thursday, 10am-4pm. 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, John Breene can be reached on (571)272-4107. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see https://ppair-my.uspto.gov/pair/PrivatePair. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /JAMEL E WILLIAMS/Primary Examiner, Art Unit 2855
Read full office action

Prosecution Timeline

Aug 19, 2024
Application Filed
Jul 14, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12699015
STRAIN GAUGE
2y 8m to grant Granted Aug 04, 2026
Patent 12693194
SUBSTATION POWER TRANSFORMER MONITORING SYSTEM FOR ENSURING COOLING SYSTEM INTEGRITY BY ISOLATING DAMAGED RADIATOR SECTIONS
2y 4m to grant Granted Jul 28, 2026
Patent 12680912
AUTONOMOUS REAL-TIME SULFUR DIOXIDE AND CARBON DIOXIDE MONITOR FOR MARINE EXHAUST EMISSIONS
3y 10m to grant Granted Jul 14, 2026
Patent 12680841
BEZEL FOR A MULTI-SENSOR DEVICE
3y 3m to grant Granted Jul 14, 2026
Patent 12680865
QUASI-DISTRIBUTED SENSING USING ENHANCED SENSING STRUCTURES
2y 8m to grant Granted Jul 14, 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
89%
Grant Probability
98%
With Interview (+9.4%)
4y 3m (~2y 3m remaining)
Median Time to Grant
Low
PTA Risk
Based on 957 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