G01P 5/245
By measuring transit time of acoustical waves
Official title: {by measuring transit time of acoustical waves (measuring propagation velocity of acoustical waves per se G01H5/00)}
G01P5/245 (By measuring transit time of acoustical waves) appears on 230 US grants and 136 published applications in this corpus.
Search patents in G01P- Granted patents
- 230
- Published applications
- 136
- Assignees
- 171
- Inventors
- 447
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 7 | 0 |
| 1978 | 8 | 0 |
| 1979 | 7 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 10 | 0 |
| 1997 | 3 | 0 |
| 1998 | 8 | 0 |
| 1999 | 5 | 0 |
| 2000 | 7 | 0 |
| 2001 | 6 | 0 |
| 2002 | 4 | 4 |
| 2003 | 7 | 2 |
| 2004 | 2 | 6 |
| 2005 | 4 | 2 |
| 2006 | 3 | 0 |
| 2007 | 2 | 3 |
| 2008 | 1 | 3 |
| 2009 | 3 | 2 |
| 2010 | 0 | 1 |
| 2011 | 2 | 1 |
| 2012 | 3 | 2 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 2 | 3 |
| 2016 | 1 | 6 |
| 2017 | 7 | 11 |
| 2018 | 5 | 6 |
| 2019 | 4 | 10 |
| 2020 | 12 | 23 |
| 2021 | 16 | 16 |
| 2022 | 15 | 10 |
| 2023 | 11 | 8 |
| 2024 | 7 | 6 |
| 2025 | 2 | 6 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for a high speed hybrid sonic and mechanical temperature and wind measurement sensor18 Aug 2026US 12,710,442 B2Michigan Aerospace Corporation
- Acoustic wind measurement14 Jul 2026US 12,681,037 B2Vaisala Oyj
- Acoustic wind measurement16 Jun 2026US 12,656,367 B2Vaisala Oyj
- Flowmeter for proportioning water in dialysis system17 Mar 2026US 12,576,199 B2Bellco SRL
- System and method for high speed sonic temperature and airspeed measurements for inputs to an air data system17 Feb 2026US 12,554,042 B2Michigan Aerospace Corporation
- Resonant-transducer-based measurement assembly30 Jul 2026US 2026/0219294 A1Vaisala Oyj
- System and method for a high speed hybrid sonic and mechanical temperature and wind measurement sensor30 Apr 2026US 2026/0118375 A1Michigan Aerospace Corporation
- Flow meter and associated method5 Mar 2026US 2026/0063659 A1STMicroelectronics International N. V.
- Wind velocity measurement apparatus and method for aircraft, and greenhouse gas detection apparatus20 Nov 2025US 2025/0355018 A1Hainan Institute of Zhejiang University
- Measuring the flow rate of fluids25 Sep 2025US 2025/0297875 A1Sick AG
Most cited
By later US patents
- Nonintrusive flow sensing system149US 5,040,415 ARockwell International Corporation · 1991
- Sonic measurement of flow rate and water content of oil-water streams140US 4,080,837 AContinental Oil Company · 1978
- Acoustic flow measurement method and measurement apparatus implementing the method136US 5,770,806 AValtion Teknillinen Tutkimuskeskus · 1998
- Relating to flow measurement117US 6,345,539 B1Cranfield University · 2002
- Method and apparatus for fire control104US 6,247,259 B1The State of Israel, Atomic Energy Commission, Soreq Nuclear Research Center · 2001