G01N 29/028
By measuring mechanical or acoustic impedance
Official title: by measuring mechanical or acoustic impedance
G01N29/028 (By measuring mechanical or acoustic impedance) appears on 60 US grants and 76 published applications in this corpus.
Search patents in G01N- Granted patents
- 60
- Published applications
- 76
- Assignees
- 59
- Inventors
- 174
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 2 |
| 2005 | 1 | 2 |
| 2006 | 0 | 3 |
| 2007 | 0 | 0 |
| 2008 | 3 | 3 |
| 2009 | 0 | 5 |
| 2010 | 1 | 1 |
| 2011 | 3 | 1 |
| 2012 | 3 | 3 |
| 2013 | 0 | 2 |
| 2014 | 3 | 4 |
| 2015 | 2 | 5 |
| 2016 | 5 | 2 |
| 2017 | 2 | 4 |
| 2018 | 1 | 3 |
| 2019 | 4 | 4 |
| 2020 | 6 | 6 |
| 2021 | 2 | 5 |
| 2022 | 3 | 5 |
| 2023 | 6 | 5 |
| 2024 | 3 | 5 |
| 2025 | 8 | 3 |
| 2026 | 3 | 2 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Determining acoustic characteristics of sample containers and fluid samples therein using reflected acoustic signals19 May 2026US 12,631,598 B2Labcyte Inc.
- Piezoelectric leaf cell sensor array for multiphase gas-oil-water flow metering31 Mar 2026US 12,590,537 B2Saudi Arabian Oil Company
- Systems and methods for obtaining downhole fluid properties27 Jan 2026US 12,535,003 B2Baker Hughes Oilfield Operations LLC
- Method for determining a sound field23 Dec 2025US 12,507,023 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Method and device for characterising the response of resonant sensors28 Oct 2025US 12,455,262 B2Advanced Wave Sensors, S.L.
- Characterizing channel cleaning efficacy1 Oct 2026US 2026/0294226 A1Saban Ventures Pty Limited
- Determining acoustic characteristics of sample containers and fluid samples therein using reflected acoustic signals27 Aug 2026US 2026/0251622 A1Labcyte Inc.
- Piezoelectric leaf cell sensor array for multiphase gas-oil-water flow metering1 May 2025US 2025/0137370 A1Aramco Services Company
- Fluid Sensor6 Mar 2025US 2025/0076256 A1Tribosonics Limited
- Self-calibrated method of determining borehole fluid acoustic properties16 Jan 2025US 2025/0020058 A1Baker Hughes Oilfield Operations LLC
Most cited
By later US patents
- Impedance analysis technique for frequency domain characterization of magnetoelastic sensor element by measuring steady-state vibration of element while undergoing constant sine-wave excitation43US 7,912,661 B2KMG2 Sensors Corporation · 2011
- Early kick detection in an oil and gas well37US 8,794,062 B2Baker Hughes Incorporated · 2014
- Differential ultrasonic waveguide cure monitoring probe21US 9,297,789 B22016
- Early kick detection in an oil and gas well20US 9,109,433 B2Baker Hughes Incorporated · 2015
- Acoustic assessment of fluids in a plurality of reservoirs15US 7,900,505 B2Labcyte Inc. · 2011