G01F 1/698
Feedback or rebalancing circuits
Official title: Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters
G01F1/698 (Feedback or rebalancing circuits) appears on 617 US grants and 354 published applications in this corpus.
Search patents in G01F- Granted patents
- 617
- Published applications
- 354
- Assignees
- 270
- Inventors
- 912
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 6 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 10 | 0 |
| 1982 | 13 | 0 |
| 1983 | 16 | 0 |
| 1984 | 12 | 0 |
| 1985 | 11 | 0 |
| 1986 | 15 | 0 |
| 1987 | 21 | 0 |
| 1988 | 17 | 0 |
| 1989 | 23 | 0 |
| 1990 | 10 | 0 |
| 1991 | 14 | 0 |
| 1992 | 9 | 0 |
| 1993 | 16 | 0 |
| 1994 | 9 | 0 |
| 1995 | 11 | 0 |
| 1996 | 14 | 0 |
| 1997 | 12 | 0 |
| 1998 | 9 | 0 |
| 1999 | 5 | 0 |
| 2000 | 12 | 0 |
| 2001 | 16 | 8 |
| 2002 | 14 | 6 |
| 2003 | 19 | 15 |
| 2004 | 17 | 27 |
| 2005 | 24 | 22 |
| 2006 | 22 | 22 |
| 2007 | 16 | 13 |
| 2008 | 12 | 20 |
| 2009 | 18 | 21 |
| 2010 | 14 | 13 |
| 2011 | 12 | 7 |
| 2012 | 7 | 10 |
| 2013 | 6 | 16 |
| 2014 | 12 | 11 |
| 2015 | 10 | 25 |
| 2016 | 13 | 14 |
| 2017 | 17 | 12 |
| 2018 | 14 | 19 |
| 2019 | 12 | 17 |
| 2020 | 15 | 12 |
| 2021 | 13 | 11 |
| 2022 | 13 | 12 |
| 2023 | 5 | 3 |
| 2024 | 9 | 8 |
| 2025 | 8 | 7 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multi-wire velocity sensor25 Aug 2026US 12,716,910 B2Tendo Technologies Inc.
- 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
- Thermal fluid flow sensor27 Jan 2026US 12,535,348 B2Flusso Limited
- Thermopile-based flow sensing apparatus with electrostatic protection20 Jan 2026US 12,529,585 B2Honeywell International Inc.
- Thermal mass fluid flow sensor26 Aug 2025US 12,399,050 B2Becton, Dickinson and Company
- Control Device for Internal Combustion Engine20 Aug 2026US 2026/0243212 A1Hitachi Astemo, Ltd.
- Apparatus and method for measuring fluid flow5 Mar 2026US 2026/0063456 A12Sg Technologies LLC
- Apparatus and method for measuring fluid flow5 Mar 2026US 2026/0063457 A12Sg Technologies LLC
- Sensor arrangement3 Jul 2025US 2025/0216235 A1Hahn-Schickard-Gesellschaft FüR Angewandte Forschung E. V.
- Sensor arrangement3 Jul 2025US 2025/0216349 A1Hahn-Schickard-Gesellschaft FüR Angewandte Forschung E. V.
Most cited
By later US patents
- Intravascular pressure and flow sensor523US 5,873,835 ASciMed Life Systems, Inc. · 1999
- Flow sensor243US 4,478,077 AHoneywell Inc. · 1984
- Flow sensor235US 4,478,076 AHoneywell Inc. · 1984
- Flow sensor195US 4,501,144 AHoneywell Inc. · 1985
- Intravascular flow measurement system176US 5,617,870 ASciMed Life Systems, Inc. · 1997