G01F 1/668
Compensating or correcting for variations in velocity of sound
Official title: {Compensating or correcting for variations in velocity of sound}
G01F1/668 (Compensating or correcting for variations in velocity of sound) appears on 231 US grants and 244 published applications in this corpus.
Search patents in G01F- Granted patents
- 231
- Published applications
- 244
- Assignees
- 149
- Inventors
- 480
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 8 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 4 | 2 |
| 2003 | 1 | 4 |
| 2004 | 2 | 8 |
| 2005 | 4 | 4 |
| 2006 | 6 | 5 |
| 2007 | 5 | 3 |
| 2008 | 7 | 6 |
| 2009 | 6 | 7 |
| 2010 | 3 | 3 |
| 2011 | 4 | 3 |
| 2012 | 5 | 8 |
| 2013 | 2 | 7 |
| 2014 | 5 | 10 |
| 2015 | 5 | 11 |
| 2016 | 12 | 11 |
| 2017 | 7 | 5 |
| 2018 | 11 | 13 |
| 2019 | 5 | 14 |
| 2020 | 16 | 24 |
| 2021 | 9 | 15 |
| 2022 | 16 | 20 |
| 2023 | 19 | 17 |
| 2024 | 16 | 16 |
| 2025 | 13 | 11 |
| 2026 | 13 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fluid flow meter, monitoring system comprising at least one such fluid flow meter and method for operating a fluid flow meter15 Sep 2026US 12,736,391 B2Sick Engineering GmbH
- Method for measuring the flow rate of a fluid in a pipe18 Aug 2026US 12,710,300 B1Sontex AG
- Ultrasonic flow sensor11 Aug 2026US 12,704,394 B2Alarm.com Incorporated
- Water metering device and methods for water consumption apportionment11 Aug 2026US 12,704,395 B2SimpleSUB Water
- Wet gas holdup gas fraction and flow meter11 Aug 2026US 12,704,396 B2Saudi Arabian Oil Company
- Method for operating an ultrasonic flowmeter and ultrasonic flowmeter1 Oct 2026US 2026/0298680 A1Krohne AG
- Physical quantity measurement system10 Sep 2026US 2026/0266641 A1Panasonic Intellectual Property Management Co., Ltd.
- Hydrogen flow/concentration meter13 Aug 2026US 2026/0235428 A1Panasonic Intellectual Property Management Co., Ltd.
- Flow path sensing for flow therapy apparatus23 Jul 2026US 2026/0207868 A1Fisher & Paykel Healthcare Limited
- Ultrasonic flowmeter and method for operating an ultrasonic flowmeter16 Jul 2026US 2026/0202228 A1Krohne AG
Most cited
By later US patents
- Acoustic flow measurement method and measurement apparatus implementing the method136US 5,770,806 AValtion Teknillinen Tutkimuskeskus · 1998
- Apparatus for sensing fluid in a pipe125US 6,782,150 B2Weatherford/Lamb, Inc. · 2004
- Ultrasonic system for measuring flow rate, fluid velocity, and pipe diameter based upon time periods101US 6,158,288 ADolphin Technology, Inc. · 2000
- Method and apparatus for leak detection and pipeline temperature modelling method and apparatus89US 5,343,737 A1994
- Ultrasonic gas flowmeter as well as device to measure exhaust flows of internal combustion engines and method to determine flow of gases84US 7,093,502 B2AVL List GmbH · 2006