G01F 3/222
Characterised by drive mechanism for valves or membrane index mechanism
Official title: {characterised by drive mechanism for valves or membrane index mechanism}
G01F3/222 (Characterised by drive mechanism for valves or membrane index mechanism) appears on 26 US grants and 10 published applications in this corpus.
Search patents in G01F- Granted patents
- 26
- Published applications
- 10
- Assignees
- 22
- Inventors
- 62
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 1 |
| 2021 | 0 | 3 |
| 2022 | 2 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Gas sampling mechanism and gas analysis device having the same6 Oct 2026US 12,754,176 B2Triple Win Technology(Shenzhen) Co. Ltd.
- Differential monitoring systems for carbon dioxide levels as well as methods of monitoring same9 May 2023US 11,644,450 B2Bacharach, Inc.
- Techniques for checking state of analyzers20 Dec 2022US 11,530,943 B2Roche Diagnostics Operations, Inc.
- Flow speed detection circuit and associated chip and flow meter29 Nov 2022US 11,512,996 B2Shenzhen Goodix Technology Co., Ltd.
- Flow meters, flow meter cartridges, and related methods19 Nov 2019US 10,480,979 B2Agilent Technologies, Inc.
- Gas sampling mechanism and gas analysis device having the same15 Feb 2024US 2024/0053315 A1Triple Win Technology(Shenzhen) Co. Ltd.
- Flow speed detection circuit and associated chip and flow meter20 May 2021US 2021/0148747 A1Shenzhen Goodix Technology Co., Ltd.
- Techniques for checking state of analyzers22 Apr 2021US 2021/0116290 A1Roche Diagnostics Operations, Inc.
- Substrate processing method and substrate processing apparatus14 Jan 2021US 2021/0010130 A1Tokyo Electron Limited
- Differential monitoring systems for carbon dioxide levels as well as methods of monitoring same29 Oct 2020US 2020/0340964 A1Bacharach, Inc.
Most cited
By later US patents
- Calibration system for mechanical gas volume corrector12US 4,674,316 AThe Singer Company · 1987
- Fluid flow rate measuring and controlling apparatus and method for using same12US 5,526,685 AGraseby Andersen Inc. · 1996
- Temperature sensing probe assembly for fluid meter11US 6,523,427 B1Dresser, Inc. · 2003
- Diaphragm type gas meter7US 4,091,668 AAichi Tokei Denki Co., Ltd. · 1978
- Apparatus and method for proving gas meters and improved sensor therefor7US 4,996,870 AMeasurement Systems, Inc. · 1991