G01N 29/024
By measuring propagation velocity or propagation time of acoustic waves
Official title: by measuring propagation velocity or propagation time of acoustic waves
G01N29/024 (By measuring propagation velocity or propagation time of acoustic waves) appears on 825 US grants and 776 published applications in this corpus.
Search patents in G01N- Granted patents
- 825
- Published applications
- 776
- Assignees
- 526
- Inventors
- 1,746
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 6 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 7 | 0 |
| 1985 | 7 | 0 |
| 1986 | 7 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 8 | 0 |
| 1993 | 10 | 0 |
| 1994 | 14 | 0 |
| 1995 | 10 | 0 |
| 1996 | 8 | 0 |
| 1997 | 8 | 0 |
| 1998 | 11 | 0 |
| 1999 | 8 | 0 |
| 2000 | 11 | 0 |
| 2001 | 21 | 3 |
| 2002 | 17 | 12 |
| 2003 | 13 | 24 |
| 2004 | 20 | 29 |
| 2005 | 17 | 19 |
| 2006 | 20 | 18 |
| 2007 | 14 | 22 |
| 2008 | 12 | 18 |
| 2009 | 20 | 14 |
| 2010 | 14 | 16 |
| 2011 | 11 | 16 |
| 2012 | 15 | 29 |
| 2013 | 15 | 16 |
| 2014 | 23 | 27 |
| 2015 | 12 | 29 |
| 2016 | 23 | 36 |
| 2017 | 30 | 46 |
| 2018 | 27 | 52 |
| 2019 | 44 | 52 |
| 2020 | 51 | 53 |
| 2021 | 43 | 60 |
| 2022 | 54 | 47 |
| 2023 | 44 | 49 |
| 2024 | 41 | 33 |
| 2025 | 42 | 32 |
| 2026 | 18 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Wet gas holdup gas fraction and flow meter11 Aug 2026US 12,704,396 B2Saudi Arabian Oil Company
- High-temperature and high-pressure speed of sound apparatus and measuring the speed of sound in a sample at high-temperature and high-pressure28 Jul 2026US 12,693,266 B2Government of the United States of America, AS Represented By the Secretary of Commerce
- Dual-gas metering system and method21 Jul 2026US 12,687,519 B2Itron, Inc.
- Methods and systems for acoustic determination of gas composition21 Jul 2026US 12,687,525 B2Saudi Arabian Oil Company
- Enhanced supercritical fluid measurement with vibratory sensors14 Jul 2026US 12,680,853 B2Micro Motion, Inc.
- Fluid cell device and method for measuring drilling mud properties8 Oct 2026US 2026/0309674 A1
- System and method for acoustic spectroscopy for fluid measurement1 Oct 2026US 2026/0298880 A1Petroleo Brasileiro S.A. - Petrobras
- Ultrasonic probe, pneumatically driven liquid metering injection apparatus, and control and fault-diagnosis method for pneumatically driven liquid metering injection based on ultrasonic sensing24 Sep 2026US 2026/0287557 A1ShenZhen KEWEI Neo_Tech Co.,Ltd.
- Climate control systems for use with high glide working fluids and methods for detecting a concentration of refrigerant in the working fluid17 Sep 2026US 2026/0276275 A1Copeland Corporation
- Climate control systems for use with high glide working fluids and methods for detecting a concentration of refrigerant in the working fluid17 Sep 2026US 2026/0276277 A1Copeland Corporation
Most cited
By later US patents
- Indirect calorimeter for medical applications391US 6,629,934 B2Healthetech, Inc. · 2003
- Method and apparatus for measuring acoustic wave velocity using impulse response290US 5,349,859 AScientific Engineering Instruments, Inc. · 1994
- Gas sensor207US 5,351,522 AAequitron Medical, Inc. · 1994
- Fluid parameter measurement in pipes using acoustic pressures191US 6,354,147 B1CiDRA Corporation · 2002
- Controller for ultrasonic sensors181US 5,437,178 AKay-Ray/Sensall, Inc. · 1995