G01P 5/00
Measuring speed of fluids
Official title: Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft (application of speed-measuring devices for measuring volume of fluid G01F)
G01P5/00 (Measuring speed of fluids) appears on 3,065 US grants and 2,176 published applications in this corpus.
Search patents in G01P- Granted patents
- 3,065
- Published applications
- 2,176
- Assignees
- 1,504
- Inventors
- 6,047
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 50 | 0 |
| 1977 | 43 | 0 |
| 1978 | 42 | 0 |
| 1979 | 29 | 0 |
| 1980 | 36 | 0 |
| 1981 | 37 | 0 |
| 1982 | 36 | 0 |
| 1983 | 41 | 0 |
| 1984 | 37 | 0 |
| 1985 | 44 | 0 |
| 1986 | 40 | 0 |
| 1987 | 40 | 0 |
| 1988 | 34 | 0 |
| 1989 | 64 | 0 |
| 1990 | 53 | 0 |
| 1991 | 67 | 0 |
| 1992 | 53 | 0 |
| 1993 | 73 | 0 |
| 1994 | 69 | 0 |
| 1995 | 61 | 0 |
| 1996 | 67 | 0 |
| 1997 | 44 | 0 |
| 1998 | 59 | 0 |
| 1999 | 45 | 0 |
| 2000 | 48 | 0 |
| 2001 | 29 | 2 |
| 2002 | 33 | 34 |
| 2003 | 62 | 36 |
| 2004 | 41 | 49 |
| 2005 | 32 | 44 |
| 2006 | 31 | 38 |
| 2007 | 33 | 55 |
| 2008 | 51 | 55 |
| 2009 | 35 | 60 |
| 2010 | 50 | 67 |
| 2011 | 50 | 64 |
| 2012 | 43 | 55 |
| 2013 | 43 | 68 |
| 2014 | 56 | 77 |
| 2015 | 71 | 96 |
| 2016 | 55 | 112 |
| 2017 | 98 | 128 |
| 2018 | 112 | 127 |
| 2019 | 125 | 153 |
| 2020 | 128 | 187 |
| 2021 | 149 | 142 |
| 2022 | 124 | 145 |
| 2023 | 141 | 112 |
| 2024 | 97 | 113 |
| 2025 | 96 | 98 |
| 2026 | 68 | 59 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01P 5/14Measuring speed of fluids: by measuring differences of pressure in the fluid703
- G01P 5/26Measuring speed of fluids: by measuring the direct influence of the streaming530
- G01P 5/24Measuring speed of fluids: by measuring the direct influence of the streaming511
- G01P 5/10Measuring speed of fluids: by measuring thermal variables413
- G01P 5/02Measuring speed of fluids: by measuring forces exerted by the fluid on404
- G01P 5/18Measuring speed of fluids: by measuring the time taken to traverse a284
- G01P 5/001Full-field flow measurement254
- G01P 5/08Measuring speed of fluids: by measuring variation of an electric variable directly96
All 12 subgroupsShow fewer
Recent patents
- Systems and methods for estimating a speed of a vehicle6 Oct 2026US 12,754,201 B2The Boeing Company
- AOM frequency shifter test fixture6 Oct 2026US 12,754,206 B2Rosemount Aerospace Inc.
- Flow rate detection for an aspirating smoke detection system29 Sep 2026US 12,747,971 B2Honeywell International Inc.
- Method and systems for monitoring and measuring the amount of a gas dissolved in a liquid22 Sep 2026US 12,742,765 B2Searas AS
- System and method for determining an environmental parameter distribution22 Sep 2026US 12,742,793 B2Signify Holding B. V.
- System for coherent wind speed measurement using a broad bandwidth light source8 Oct 2026US 2026/0309743 A1Tobb Ekonomi Ve Teknoloji Universitesi
- Downrigger Probe1 Oct 2026US 2026/0298720 A1Airmar Technology Corporation
- Visualization system for spatial visualization1 Oct 2026US 2026/0298967 A1Prime Planet Energy & Solutions, Inc.
- Lidar measurement of methane gas flows using local wind data1 Oct 2026US 2026/0298968 A1QLM Technology Ltd
- Lidar system for measuring the velocity of fluids1 Oct 2026US 2026/0299094 A1Office National D’Etudes Et De Recherches AéRospatiales
Most cited
By later US patents
- Intravascular pressure and flow sensor523US 5,873,835 ASciMed Life Systems, Inc. · 1999
- Electrochemical sensor519US 5,670,031 AFraunhofer-Gesellschaft zur angewandten Forschung e.V. · 1997
- Three-parameter optical fiber sensor and system497US 4,986,671 ALuxtron Corporation · 1991
- Methods and apparatus for monitoring cardiac output423US 4,796,634 ALawrence Medical Systems, Inc. · 1989
- Method and apparatus for optical Doppler tomographic imaging of fluid flow velocity in highly scattering media338US 5,991,697 AThe Regents of the University of California · 1999