Prosecution Insights
Last updated: April 19, 2026
Application No. 18/724,757

MULTIPHASE FLOW METERING SYSTEM AND METHOD

Non-Final OA §101
Filed
Jun 27, 2024
Examiner
CURRAN, GREGORY H
Art Unit
2852
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Petrochina Company Limited
OA Round
1 (Non-Final)
90%
Grant Probability
Favorable
1-2
OA Rounds
2y 3m
To Grant
95%
With Interview

Examiner Intelligence

Grants 90% — above average
90%
Career Allow Rate
753 granted / 834 resolved
+22.3% vs TC avg
Minimal +5% lift
Without
With
+4.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
18 currently pending
Career history
852
Total Applications
across all art units

Statute-Specific Performance

§101
3.8%
-36.2% vs TC avg
§103
38.9%
-1.1% vs TC avg
§102
38.5%
-1.5% vs TC avg
§112
11.5%
-28.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 834 resolved cases

Office Action

§101
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 § 101 35 U.S.C. 101 reads as follows: Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefor, subject to the conditions and requirements of this title. Claim 12 is rejected under 35 U.S.C. 101 because the claimed invention is directed to non-statutory subject matter. The claim(s) does/do not fall within at least one of the four categories of patent eligible subject matter because given the broadest reasonable interpretation “a computer-readable storage medium” includes a transitory carrier wave, which is non-statutory. Allowable Subject Matter Claims 1-11 are allowed. The following is a statement of reasons for the indication of allowable subject matter: The prior art does not disclose or suggest the claimed "measurement branch is connected in parallel on the measurement trunk through a third port of the first three-way valve (2), a third port of the second three- way valve (4) and a third port of the third three-way valve (5); the magnetic resonance multiphase flowmeter comprises a plurality of magnet structures, which are distributed at intervals in an axial direction of the magnetic resonance multiphase flowmeter and are configured to magnetize a fluid; and the magnetic resonance multiphase flowmeter further comprises two measurement antennas, which are distributed at intervals in the axial direction of the magnetic resonance multiphase flowmeter and are configured to perform phase state detection on the magnetized fluid." in combination with the remaining claim elements as set forth in claims 1-11. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Hiltunen et al. (US 11,906,606 B2) teaches an NMR measurement unit fixable within a process channel. Bousche et al. (US 9,429,457 B2) teaches a nuclear magnetic flowmeter. King et al. (US 6,046,587) teaches measurement of flow fractions, flow velocities, and flow rates of a multiphase fluid using NMR sensing. Any inquiry concerning this communication or earlier communications from the examiner should be directed to GREGORY H CURRAN whose telephone number is (571)270-7505. The examiner can normally be reached Monday-Friday, 8am-5pm, 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, Walter Lindsay can be reached at (571) 272-1674. 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. /GREGORY H CURRAN/Primary Examiner, Art Unit 2852
Read full office action

Prosecution Timeline

Jun 27, 2024
Application Filed
Jan 30, 2026
Non-Final Rejection — §101 (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
90%
Grant Probability
95%
With Interview (+4.8%)
2y 3m
Median Time to Grant
Low
PTA Risk
Based on 834 resolved cases by this examiner. Grant probability derived from career allow rate.

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