G01F 3/20
Having flexible movable walls
Official title: having flexible movable walls, e.g. diaphragms, bellows
G01F3/20 (Having flexible movable walls) appears on 140 US grants and 99 published applications in this corpus.
Search patents in G01F- Granted patents
- 140
- Published applications
- 99
- Assignees
- 86
- Inventors
- 259
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 1 |
| 2003 | 2 | 0 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 2 | 1 |
| 2007 | 1 | 3 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 4 |
| 2011 | 1 | 4 |
| 2012 | 2 | 4 |
| 2013 | 3 | 6 |
| 2014 | 1 | 2 |
| 2015 | 4 | 8 |
| 2016 | 5 | 2 |
| 2017 | 4 | 4 |
| 2018 | 1 | 8 |
| 2019 | 5 | 9 |
| 2020 | 9 | 11 |
| 2021 | 6 | 10 |
| 2022 | 9 | 4 |
| 2023 | 9 | 4 |
| 2024 | 3 | 7 |
| 2025 | 3 | 3 |
| 2026 | 2 | 1 |
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.
- Gas meter15 Sep 2026US 12,736,373 B2Panasonic Intellectual Property Management Co., Ltd.
- Product dispensing system24 Jun 2025US 12,338,116 B2DEKA Products Limited Partneship
- Product dispensing system3 Jun 2025US 12,319,560 B2DEKA Products Limited Partnership
- Method and system for shape-memory alloy wire control15 Apr 2025US 12,274,857 B2DEKA Products Limited Partnership
- Integrated capacitive flowmeter for infusion pump5 Feb 2026US 2026/0034299 A1CareFusion 303, Inc.
- Product dispensing system11 Sep 2025US 2025/0282604 A1DEKA Products Limited Partnership
- Gas meter and gas meter power consumption management system3 Jul 2025US 2025/0216241 A1Panasonic Intellectual Property Management Co., Ltd.
- Method for evaluating a vibrational event6 Mar 2025US 2025/0076338 A1PIETRO FIORENTINI S.p.A.
- Pump-Based Fluid Flow Meter12 Dec 2024US 2024/0410348 A1Fize Medical Ltd.
Most cited
By later US patents
- Electronically controlled flow meter and flow control system158US 4,315,523 AAmerican Flow Systems, Inc. · 1982
- Pumping system84US 5,125,801 AIsco, Inc. · 1992
- Product dispensing system78US 8,087,303 B2DEKA Products Limited Partnership · 2012
- Cassette for intravenous controller77US 4,204,538 AIMED Corporation · 1980
- Peristaltic pump having a roller support30US 5,915,932 AIsco, Inc. · 1999