G01P 21/025
For measuring speed of fluids
Official title: {for measuring speed of fluids; for measuring speed of bodies relative to fluids (for measuring volume flow G01F25/10)}
G01P21/025 (For measuring speed of fluids) appears on 190 US grants and 194 published applications in this corpus.
Search patents in G01P- Granted patents
- 190
- Published applications
- 194
- Assignees
- 103
- Inventors
- 421
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 5 | 0 |
| 2002 | 1 | 3 |
| 2003 | 2 | 4 |
| 2004 | 3 | 2 |
| 2005 | 1 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 2 |
| 2008 | 2 | 1 |
| 2009 | 1 | 0 |
| 2010 | 1 | 3 |
| 2011 | 0 | 8 |
| 2012 | 4 | 7 |
| 2013 | 4 | 2 |
| 2014 | 4 | 5 |
| 2015 | 8 | 16 |
| 2016 | 8 | 10 |
| 2017 | 10 | 8 |
| 2018 | 10 | 11 |
| 2019 | 8 | 17 |
| 2020 | 15 | 29 |
| 2021 | 15 | 16 |
| 2022 | 14 | 13 |
| 2023 | 18 | 10 |
| 2024 | 8 | 5 |
| 2025 | 8 | 11 |
| 2026 | 9 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Techniques for assuring accuracy of air-data systems18 Aug 2026US 12,710,443 B2Honeywell Aerospace US LLC
- Aircraft sensor simulation calibration systems and methods16 Jun 2026US 12,656,366 B2General Electric Company
- Air data indicating arrangement and method for calibrating the same9 Jun 2026US 12,649,586 B2Kopter Group AG
- Dynamic multi-stage air data probe prognostics health monitoring management9 Jun 2026US 12,651,491 B2Collins Aerospace
- Window covering system to an optical head of an optical air data system13 Aug 2026US 2026/0235638 A1Honeywell International Inc.
- Aircraft Altitude System11 Jun 2026US 2026/0160550 A1Skyryse, Inc.
- Aircraft Speed System4 Jun 2026US 2026/0153330 A1Skyryse, Inc.
- Validation method of aerodynamic measurements and associated validation device4 Jun 2026US 2026/0153404 A1Thales
- Aircraft Air Data System4 Jun 2026US 2026/0153533 A1Skyryse, Inc.
Most cited
By later US patents
- System for estimating airspeed of an aircraft based on a drag model38US 10,768,201 B2The Boeing Company · 2020
- Method and apparatus for correcting dynamically induced errors in static pressure, airspeed and airspeed rate31US 5,349,347 AAlliedSignal Inc. · 1994
- Method for determining the air speed of a helicopter, system for carrying on this method and method for calibrating such air speed determining method and system30US 4,829,441 ACrouzet - A French "Societe Anonyme" · 1989
- Blocked pitot-static monitor27US 6,205,376 B1Rockwell Collins, Inc. · 2001
- Differential pressure transmitter with highly accurate temperature compensation26US 5,811,690 A1998