G01F 5/00
Measuring a proportion of the volume flow
G01F5/00 (Measuring a proportion of the volume flow) appears on 867 US grants and 730 published applications in this corpus.
Search patents in G01F- Granted patents
- 867
- Published applications
- 730
- Assignees
- 309
- Inventors
- 1,214
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 13 | 0 |
| 1984 | 13 | 0 |
| 1985 | 14 | 0 |
| 1986 | 9 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 13 | 0 |
| 1990 | 16 | 0 |
| 1991 | 12 | 0 |
| 1992 | 11 | 0 |
| 1993 | 15 | 0 |
| 1994 | 22 | 0 |
| 1995 | 10 | 0 |
| 1996 | 9 | 0 |
| 1997 | 10 | 0 |
| 1998 | 11 | 0 |
| 1999 | 16 | 0 |
| 2000 | 6 | 0 |
| 2001 | 15 | 7 |
| 2002 | 13 | 16 |
| 2003 | 21 | 27 |
| 2004 | 16 | 25 |
| 2005 | 29 | 24 |
| 2006 | 22 | 23 |
| 2007 | 25 | 19 |
| 2008 | 17 | 22 |
| 2009 | 17 | 24 |
| 2010 | 19 | 25 |
| 2011 | 15 | 16 |
| 2012 | 10 | 23 |
| 2013 | 19 | 35 |
| 2014 | 31 | 33 |
| 2015 | 29 | 49 |
| 2016 | 19 | 39 |
| 2017 | 45 | 54 |
| 2018 | 40 | 53 |
| 2019 | 48 | 38 |
| 2020 | 56 | 44 |
| 2021 | 39 | 46 |
| 2022 | 35 | 32 |
| 2023 | 24 | 26 |
| 2024 | 21 | 14 |
| 2025 | 15 | 7 |
| 2026 | 6 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Combustion apparatus with mass flow sensor7 Apr 2026US 12,595,773 B2Siemens Aktiengesellschaft
- Air mass sensor7 Apr 2026US 12,596,025 B2Vitesco Technologies GmbH
- Temperature sensor as well as mass flow meter and mass flow controller comprising the same24 Mar 2026US 12,584,775 B2Kuwana Metals, Ltd.
- Electronic control device and flow rate measurement system17 Mar 2026US 12,578,091 B2Hitachi Astemo, Ltd.
- Continuous microfluidic dilatometry for physical activity monitoring with ultrahigh sensitivity17 Mar 2026US 12,578,215 B2Santa Clara University
- Sensor device10 Sep 2026US 2026/0266643 A1Mmi Semiconductor Co., Ltd.
- Flow rate adjusting device and control method of flow rate adjusting device3 Sep 2026US 2026/0259574 A1Surpass Industry Co., Ltd.
- Control Device for Internal Combustion Engine20 Aug 2026US 2026/0243212 A1Hitachi Astemo, Ltd.
- Flow rate and rheology measurement with enhanced accuracy at low flow rates9 Jul 2026US 2026/0193979 A1
- System and flow sensor for measuring a flow of a fluid measuring medium2 Jul 2026US 2026/0185858 A1Innovative Sensor Technology IST AG
Most cited
By later US patents
- Thermal mass flowmeter and mass flow controller, flowmetering system and method131US 5,911,238 AEmerson Electric Co. · 1999
- Method and apparatus for detecting and controlling mass flow106US 5,944,048 AEmerson Electric Co. · 1999
- Air flow rate measuring apparatus89US 4,264,961 AHitachi, Ltd. · 1981
- Ultrasonic flow sensor88US 6,178,827 B22001
- Flow rate module and integrated flow restrictor87US 6,655,207 B1Honeywell International Inc. · 2003