G01F 1/325
Means for detecting quantities used as proxy variables for swirl
G01F1/325 (Means for detecting quantities used as proxy variables for swirl) appears on 460 US grants and 200 published applications in this corpus.
Search patents in G01F- Granted patents
- 460
- Published applications
- 200
- Assignees
- 183
- Inventors
- 626
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 9 | 0 |
| 1978 | 10 | 0 |
| 1979 | 7 | 0 |
| 1980 | 11 | 0 |
| 1981 | 14 | 0 |
| 1982 | 12 | 0 |
| 1983 | 9 | 0 |
| 1984 | 20 | 0 |
| 1985 | 11 | 0 |
| 1986 | 12 | 0 |
| 1987 | 8 | 0 |
| 1988 | 8 | 0 |
| 1989 | 19 | 0 |
| 1990 | 20 | 0 |
| 1991 | 10 | 0 |
| 1992 | 10 | 0 |
| 1993 | 8 | 0 |
| 1994 | 9 | 0 |
| 1995 | 9 | 0 |
| 1996 | 11 | 0 |
| 1997 | 6 | 0 |
| 1998 | 11 | 0 |
| 1999 | 7 | 0 |
| 2000 | 3 | 0 |
| 2001 | 9 | 1 |
| 2002 | 7 | 2 |
| 2003 | 5 | 5 |
| 2004 | 2 | 8 |
| 2005 | 8 | 8 |
| 2006 | 6 | 5 |
| 2007 | 6 | 2 |
| 2008 | 6 | 5 |
| 2009 | 3 | 8 |
| 2010 | 7 | 4 |
| 2011 | 7 | 8 |
| 2012 | 1 | 5 |
| 2013 | 4 | 11 |
| 2014 | 11 | 6 |
| 2015 | 8 | 11 |
| 2016 | 9 | 12 |
| 2017 | 8 | 9 |
| 2018 | 4 | 18 |
| 2019 | 13 | 8 |
| 2020 | 18 | 22 |
| 2021 | 9 | 12 |
| 2022 | 15 | 10 |
| 2023 | 12 | 3 |
| 2024 | 13 | 10 |
| 2025 | 5 | 5 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Flow rate detection for an aspirating smoke detection system29 Sep 2026US 12,747,971 B2Honeywell International Inc.
- Flow measurement device17 Mar 2026US 12,578,214 B2Kofloc Corp.
- Sensor for detecting pressure fluctuations in a flowing fluid, and measurement system formed therewith16 Dec 2025US 12,498,259 B2Endress + Hauser Flowtec AG
- Vortex flowmeter providing extended flow rate measurement9 Dec 2025US 12,492,925 B2Schneider Electric Systems USA, Inc.
- Multiphase vortex flowmeter system23 Sep 2025US 12,422,285 B2Halker Smart Solutions LLC
- Capacitive sensor assembly for a field device, and field device18 Jun 2026US 2026/0168827 A1Endress + Hauser Flowtec AG
- Sensor and measurement system formed therewith28 May 2026US 2026/0146875 A1Endress + Hauser Flowtec AG
- Flow sensor and photoacoustic detector18 Sep 2025US 2025/0290781 A1UST Umweltsensortechnik GmbH
- Apparatus, method, and non-transitory computer readable medium11 Sep 2025US 2025/0283741 A1Yokogawa Electric Corporation
- Liquid Velocity Meter for Installation in Pipes5 Jun 2025US 2025/0180595 A1Meterra Tech AS
Most cited
By later US patents
- Method for recording multi-phase flows through a transport system120US 5,083,452 ASensorteknikk A/S · 1992
- Electronic controlled fuel injection system59US 4,275,694 ANissan Motor Co., Ltd. · 1981
- Fuel feed device for engine57US 4,256,075 AMikuni Kogyo Kabushiki Kaisha · 1981
- Piezoelectric pressure sensor57US 5,209,125 AThe Foxboro Company · 1993
- Fiber optic thermal anemometer52US 4,621,929 ALuxtron Corporation · 1986