G01F 9/001
Measuring volume flow relative to another variable: with electric, electro-mechanic or electronic
Official title: {with electric, electro-mechanic or electronic means (G01F9/008 and G01F9/02 take precedence)}
G01F9/001 (Measuring volume flow relative to another variable: with electric, electro-mechanic or electronic) appears on 241 US grants and 182 published applications in this corpus.
Search patents in G01F- Granted patents
- 241
- Published applications
- 182
- Assignees
- 190
- Inventors
- 554
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 10 | 0 |
| 1978 | 7 | 0 |
| 1979 | 10 | 0 |
| 1980 | 4 | 0 |
| 1981 | 7 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 0 |
| 2002 | 5 | 3 |
| 2003 | 3 | 3 |
| 2004 | 3 | 5 |
| 2005 | 9 | 3 |
| 2006 | 2 | 1 |
| 2007 | 1 | 3 |
| 2008 | 2 | 4 |
| 2009 | 0 | 3 |
| 2010 | 1 | 2 |
| 2011 | 1 | 7 |
| 2012 | 2 | 8 |
| 2013 | 6 | 2 |
| 2014 | 1 | 6 |
| 2015 | 5 | 8 |
| 2016 | 12 | 17 |
| 2017 | 10 | 20 |
| 2018 | 17 | 18 |
| 2019 | 13 | 8 |
| 2020 | 12 | 13 |
| 2021 | 19 | 14 |
| 2022 | 8 | 12 |
| 2023 | 6 | 6 |
| 2024 | 6 | 6 |
| 2025 | 8 | 7 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Measurement apparatus and method15 Sep 2026US 12,736,380 B2ROLLS-ROYCE plc
- Olfactogram techniques4 Nov 2025US 12,458,991 B2iRomaScents A.B. Ltd.
- Controlling an operation of an electronic cigarette7 Oct 2025US 12,433,344 B2Fontem Ventures B.V.
- Calculating a depletion time during dialysis23 Sep 2025US 12,420,001 B2Fresenius Medical Care Holdings, Inc.
- Vehicle body fuel consumption determination based on sensor data15 Jul 2025US 12,359,952 B2The Heil Co.
- Controlling an operation of an electronic cigarette2 Jul 2026US 2026/0182665 A1Fontem Ventures B.V.
- Integrated capacitive flowmeter for infusion pump5 Feb 2026US 2026/0034299 A1CareFusion 303, Inc.
- Developing fluid supply apparatus, developing apparatus, and developing fluid supply method22 Jan 2026US 2026/0023323 A1Tokyo Electron Limited
- Metering and/or weighing device for foodstuff11 Dec 2025US 2025/0377230 A1Swisca AG
- Vehicle body fuel consumption determination based on sensor data4 Dec 2025US 2025/0369788 A1The Heil Co.
Most cited
By later US patents
- Sonic pressure volume measuring device89US 4,474,061 AMotorola, Inc. · 1984
- Flow calculation system79US 6,789,024 B1Metropolitan Industries, Inc. · 2004
- Fuel consumption display system and method for vehicles71US 6,453,731 B1Nissan Motor Co., Ltd. · 2002
- Real-time exhaust gas modular flowmeter and emissions reporting system for mobile apparatus65US 6,470,732 B1The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 2002
- System to monitor multiple fuel dispensers and fuel supply tank61US 5,319,545 ALRS, Inc. · 1994