G01F 5/005
Measuring a proportion of the volume flow: by measuring pressure or differential
Official title: {by measuring pressure or differential pressure, created by the use of flow constriction}
G01F5/005 (Measuring a proportion of the volume flow: by measuring pressure or differential) appears on 89 US grants and 76 published applications in this corpus.
Search patents in G01F- Granted patents
- 89
- Published applications
- 76
- Assignees
- 74
- Inventors
- 204
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 3 |
| 2009 | 3 | 1 |
| 2010 | 0 | 3 |
| 2011 | 3 | 2 |
| 2012 | 0 | 1 |
| 2013 | 1 | 2 |
| 2014 | 1 | 3 |
| 2015 | 2 | 2 |
| 2016 | 4 | 5 |
| 2017 | 0 | 4 |
| 2018 | 5 | 9 |
| 2019 | 4 | 6 |
| 2020 | 9 | 8 |
| 2021 | 7 | 12 |
| 2022 | 8 | 3 |
| 2023 | 13 | 6 |
| 2024 | 1 | 1 |
| 2025 | 2 | 0 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Continuous microfluidic dilatometry for physical activity monitoring with ultrahigh sensitivity17 Mar 2026US 12,578,215 B2Santa Clara University
- Heat transfer light detection and ranging device17 Mar 2026US 12,578,433 B2LG Innotek Co., Ltd.
- Creating mass flow parity in a variant multi-channel sampling system3 Jun 2025US 12,320,791 B2Picarro, Inc.
- Real time flow rate and rheology measurement7 Jan 2025US 12,188,801 B2Weatherford Technology Holdings, LLC
- Methods and apparatus for pressure based mass flow ratio control26 Mar 2024US 11,940,307 B2MKS Instruments, Inc.
- Sensor device10 Sep 2026US 2026/0266643 A1Mmi Semiconductor Co., Ltd.
- Heat transfer light detection and ranging device18 Jun 2026US 2026/0169132 A1LG Innotek Co., Ltd.
- Flow sensor22 Jan 2026US 2026/0022956 A1Honeywell UK Limited
- Method and Apparatus for Integrated Pressure and Flow Controller22 Aug 2024US 2024/0281007 A1MKS Instruments, Inc.
- Continuous microfluidic dilatometry for physical activity monitoring with ultrahigh sensitivity23 Nov 2023US 2023/0375383 A1Santa Clara University
Most cited
By later US patents
- Flowmeter71US 5,044,199 ADXL International, Inc. · 1991
- Flowmeter with a variable constriction37US 5,554,805 A1996
- Laminar flow element for a flowmeter37US 5,576,498 AThe Rosaen Company · 1996
- Wide-range laminar flowmeter35US 5,297,427 AAlicat Scientific, Inc. · 1994
- Method and apparatus for measuring airflows in HVAC systems34US 6,079,627 AYork International Corporation · 2000