G01F 1/86
Indirect mass flowmeters
Official title: Indirect mass flowmeters, e.g. measuring volume flow and density, temperature or pressure
G01F1/86 (Indirect mass flowmeters) appears on 626 US grants and 517 published applications in this corpus.
Search patents in G01F- Granted patents
- 626
- Published applications
- 517
- Assignees
- 379
- Inventors
- 1,307
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 9 | 0 |
| 1982 | 1 | 0 |
| 1983 | 6 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 7 | 0 |
| 1989 | 15 | 0 |
| 1990 | 13 | 0 |
| 1991 | 13 | 0 |
| 1992 | 8 | 0 |
| 1993 | 15 | 0 |
| 1994 | 10 | 0 |
| 1995 | 16 | 0 |
| 1996 | 6 | 0 |
| 1997 | 8 | 0 |
| 1998 | 6 | 0 |
| 1999 | 14 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 1 |
| 2002 | 8 | 6 |
| 2003 | 10 | 16 |
| 2004 | 8 | 16 |
| 2005 | 16 | 12 |
| 2006 | 10 | 11 |
| 2007 | 9 | 14 |
| 2008 | 11 | 20 |
| 2009 | 15 | 19 |
| 2010 | 11 | 15 |
| 2011 | 17 | 16 |
| 2012 | 8 | 9 |
| 2013 | 12 | 17 |
| 2014 | 18 | 18 |
| 2015 | 7 | 30 |
| 2016 | 23 | 28 |
| 2017 | 24 | 26 |
| 2018 | 21 | 33 |
| 2019 | 23 | 29 |
| 2020 | 35 | 38 |
| 2021 | 28 | 30 |
| 2022 | 25 | 24 |
| 2023 | 25 | 35 |
| 2024 | 29 | 18 |
| 2025 | 31 | 26 |
| 2026 | 13 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Mini environment instrumented wafer25 Aug 2026US 12,721,111 B2KLA Corporation
- Void fraction sensor, flowmeter using the same, and cryogenic liquid transfer pipe18 Aug 2026US 12,710,390 B2KYOCERA Corporation
- Camera based flow detection14 Jul 2026US 12,677,726 B2Deere & Company
- Enhanced supercritical fluid measurement with vibratory sensors14 Jul 2026US 12,680,853 B2Micro Motion, Inc.
- Real time flow rate and rheology measurement30 Jun 2026US 12,669,023 B2Weatherford Technology Holdings, LLC
- Free surface flow measurement assembly24 Sep 2026US 2026/0287404 A1Flo Sciences, LLC
- Heat pipe measurement systems and methods10 Sep 2026US 2026/0269091 A1Westinghouse Electric Corp.
- Methods and apparatus for respiratory therapy20 Aug 2026US 2026/0241125 A1ResMed Pty Ltd
- Flow rate and rheology measurement with enhanced accuracy at low flow rates9 Jul 2026US 2026/0193979 A1
- Assembly comprising a milking device and a measuring device for measuring a mass flow of milked milk2 Jul 2026US 2026/0182532 A1GEA Farm Technologies GmbH
Most cited
By later US patents
- Method for wide range gas flow system with real time flow measurement and correction590US 6,119,710 ACyber Instrument Technologies LLC · 2000
- Flow meter567US 6,874,480 B1Combustion Dynamics Corp. · 2005
- Instantaneous volume measurement system and method for non-invasively measuring liquid parameters217US 5,421,208 ABaxter International Inc. · 1995
- Method and apparatus for measuring multiphase flows198US 5,591,922 ASchlumberger Technology Corporation · 1997
- Ultrasonic flow metering system156US 6,487,916 B1Bechtel BXWT Idaho, LLC · 2002