G01F 3/02
Measuring the volume flow of fluids or fluent solid material wherein the
Official title: with measuring chambers which expand or contract during measurement
G01F3/02 (Measuring the volume flow of fluids or fluent solid material wherein the) appears on 539 US grants and 343 published applications in this corpus.
Search patents in G01F- Granted patents
- 539
- Published applications
- 343
- Assignees
- 292
- Inventors
- 856
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 11 | 0 |
| 1978 | 12 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 9 | 0 |
| 1982 | 7 | 0 |
| 1983 | 5 | 0 |
| 1984 | 12 | 0 |
| 1985 | 6 | 0 |
| 1986 | 6 | 0 |
| 1987 | 10 | 0 |
| 1988 | 11 | 0 |
| 1989 | 12 | 0 |
| 1990 | 13 | 0 |
| 1991 | 13 | 0 |
| 1992 | 10 | 0 |
| 1993 | 17 | 0 |
| 1994 | 13 | 0 |
| 1995 | 15 | 0 |
| 1996 | 22 | 0 |
| 1997 | 8 | 0 |
| 1998 | 11 | 0 |
| 1999 | 5 | 0 |
| 2000 | 11 | 0 |
| 2001 | 2 | 1 |
| 2002 | 6 | 5 |
| 2003 | 9 | 7 |
| 2004 | 7 | 9 |
| 2005 | 10 | 7 |
| 2006 | 6 | 10 |
| 2007 | 7 | 11 |
| 2008 | 7 | 8 |
| 2009 | 5 | 12 |
| 2010 | 5 | 14 |
| 2011 | 10 | 14 |
| 2012 | 13 | 15 |
| 2013 | 13 | 24 |
| 2014 | 11 | 14 |
| 2015 | 9 | 15 |
| 2016 | 18 | 15 |
| 2017 | 19 | 14 |
| 2018 | 7 | 19 |
| 2019 | 15 | 27 |
| 2020 | 27 | 31 |
| 2021 | 16 | 24 |
| 2022 | 20 | 12 |
| 2023 | 17 | 13 |
| 2024 | 13 | 10 |
| 2025 | 6 | 7 |
| 2026 | 5 | 5 |
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.
- System and method for monitoring liquid adhesive flow29 Sep 2026US 12,747,968 B2Nordson Corporation
- Gas meter15 Sep 2026US 12,736,373 B2Panasonic Intellectual Property Management Co., Ltd.
- Measuring device for metering fluids, and method for metering by means of a measuring device of this type14 Apr 2026US 12,601,620 B2AVL List GmbH
- Method and apparatus for continuously supplying a metering device24 Mar 2026US 12,584,777 B2Marco Systemanalyse und Entwicklung GmbH
- Rotor crankshaft driven positive displacement meter30 Jul 2026US 2026/0219081 A1Smith Meter Inc.
- Proportional volumetric dosing device30 Jul 2026US 2026/0219086 A1Mixtron S.R.L.
- Hot melt adhesive foam dispensing system implementing a heat exchanger and process implementing a hot melt adhesive foam dispensing system25 Jun 2026US 2026/0175239 A1Nordson Corporation
- Integrated capacitive flowmeter for infusion pump5 Feb 2026US 2026/0034299 A1CareFusion 303, Inc.
- Device with flowmeter and nozzle for exact dosing22 Jan 2026US 2026/0022959 A1
Most cited
By later US patents
- Positive displacement piston flow meter with damping assembly818US 5,562,002 ASensidyne, Inc. · 1996
- Inductance-based dose measurement in syringes551US 6,068,615 AHealth Hero Network, Inc. · 2000
- Optical dose measurements in syringes480US 6,113,578 AHealth Hero Network, Inc. · 2000
- Apparatus for optically determining and electronically recording injection doses in syringes436US 5,792,117 ARaya Systems, Inc. · 1998
- Apparatus for electrically determining injection doses in syringes432US 5,569,212 ARaya Systems, Inc. · 1996