G01F 1/66
Measuring the volume flow or mass flow of fluid or fluent solid
Official title: by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
G01F1/66 (Measuring the volume flow or mass flow of fluid or fluent solid) appears on 2,895 US grants and 2,748 published applications in this corpus.
Search patents in G01F- Granted patents
- 2,895
- Published applications
- 2,748
- Assignees
- 1,233
- Inventors
- 4,645
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 19 | 0 |
| 1977 | 21 | 0 |
| 1978 | 18 | 0 |
| 1979 | 18 | 0 |
| 1980 | 18 | 0 |
| 1981 | 22 | 0 |
| 1982 | 24 | 0 |
| 1983 | 24 | 0 |
| 1984 | 32 | 0 |
| 1985 | 31 | 0 |
| 1986 | 19 | 0 |
| 1987 | 11 | 0 |
| 1988 | 22 | 0 |
| 1989 | 13 | 0 |
| 1990 | 23 | 0 |
| 1991 | 19 | 0 |
| 1992 | 27 | 0 |
| 1993 | 28 | 0 |
| 1994 | 26 | 0 |
| 1995 | 27 | 0 |
| 1996 | 29 | 0 |
| 1997 | 26 | 0 |
| 1998 | 46 | 0 |
| 1999 | 28 | 0 |
| 2000 | 31 | 0 |
| 2001 | 22 | 10 |
| 2002 | 45 | 41 |
| 2003 | 65 | 43 |
| 2004 | 39 | 43 |
| 2005 | 49 | 60 |
| 2006 | 42 | 50 |
| 2007 | 48 | 70 |
| 2008 | 46 | 66 |
| 2009 | 44 | 63 |
| 2010 | 55 | 77 |
| 2011 | 55 | 73 |
| 2012 | 65 | 88 |
| 2013 | 73 | 95 |
| 2014 | 66 | 117 |
| 2015 | 88 | 133 |
| 2016 | 118 | 147 |
| 2017 | 112 | 152 |
| 2018 | 112 | 155 |
| 2019 | 168 | 178 |
| 2020 | 179 | 191 |
| 2021 | 110 | 173 |
| 2022 | 155 | 186 |
| 2023 | 179 | 176 |
| 2024 | 124 | 145 |
| 2025 | 140 | 123 |
| 2026 | 94 | 93 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for preventing and removing chemical deposits in a fluid heating device6 Oct 2026US 12,753,950 B2Rheem Manufacturing Company
- Device for measuring a fluid6 Oct 2026US 12,754,050 B2PIETRO FIORENTINI S.p.A.
- Device and method for ultrasonic measurement of the fluid flow velocity and flowrate29 Sep 2026US 12,747,973 B2
- Throughflow measuring device having a housing and measuring insert29 Sep 2026US 12,747,974 B2Landis+Gyr, Inc.
- Optical measurement of flow parameters22 Sep 2026US 12,742,669 B2Flowlit Ltd.
- Flow and level monitor for fluid systems1 Oct 2026US 2026/0298679 A1Hydro Radar, LLC
- Method for operating an ultrasonic flowmeter and ultrasonic flowmeter1 Oct 2026US 2026/0298680 A1Krohne AG
- Digitally assisted microwave multiphase flow meter1 Oct 2026US 2026/0298693 A1King Abdullah University of Science and Technology
- Ultrasonic electromagnetic sensor for multiphase cut measurements and associated methods1 Oct 2026US 2026/0298858 A1PERM Inc.
- Pollution Protected Sensor Units24 Sep 2026US 2026/0287477 A1Belimo Holding AG
Most cited
By later US patents
- Flow meter567US 6,874,480 B1Combustion Dynamics Corp. · 2005
- Method and system for measuring volume and controlling flow439US 5,533,389 ADEKA Products Limited Partnership · 1996
- Indirect calorimeter for medical applications391US 6,629,934 B2Healthetech, Inc. · 2003
- Flow control system with volume-measuring system using a resonatable mass332US 5,575,310 ADEKA Products Limited Partnership · 1996
- Apparatus, system and method for measuring spatial average velocity and/or volumetric flow of blood in a vessel and screw joint for use therewith325US 5,174,295 ACardiometrics, Inc. · 1992