G01P 5/18
Measuring speed of fluids: by measuring the time taken to traverse a
Official title: by measuring the time taken to traverse a fixed distance
G01P5/18 (Measuring speed of fluids: by measuring the time taken to traverse a) appears on 284 US grants and 208 published applications in this corpus.
Search patents in G01P- Granted patents
- 284
- Published applications
- 208
- Assignees
- 235
- Inventors
- 650
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 8 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 8 | 0 |
| 1996 | 7 | 0 |
| 1997 | 5 | 0 |
| 1998 | 8 | 0 |
| 1999 | 6 | 0 |
| 2000 | 10 | 0 |
| 2001 | 3 | 0 |
| 2002 | 8 | 10 |
| 2003 | 9 | 6 |
| 2004 | 6 | 6 |
| 2005 | 4 | 5 |
| 2006 | 3 | 5 |
| 2007 | 6 | 7 |
| 2008 | 5 | 5 |
| 2009 | 2 | 11 |
| 2010 | 9 | 10 |
| 2011 | 7 | 5 |
| 2012 | 5 | 6 |
| 2013 | 2 | 6 |
| 2014 | 7 | 10 |
| 2015 | 8 | 6 |
| 2016 | 4 | 10 |
| 2017 | 10 | 11 |
| 2018 | 5 | 8 |
| 2019 | 11 | 11 |
| 2020 | 9 | 11 |
| 2021 | 14 | 15 |
| 2022 | 4 | 14 |
| 2023 | 8 | 7 |
| 2024 | 11 | 10 |
| 2025 | 11 | 8 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for estimating a speed of a vehicle6 Oct 2026US 12,754,201 B2The Boeing Company
- Fluid measurement system and fluid measurement method8 Sep 2026US 12,730,122 B2Fuji Electric Co., Ltd.
- Apparatus for monitoring of the multiphase flow in a pipe18 Aug 2026US 12,710,298 B2Enercorp Engineered Solutions Inc.
- Method for determining at least one charge characteristic of electrical charges of particles in a fluid stream and a fluid stream charge measuring device2 Jun 2026US 12,644,818 B2Bundesrepublik Deutschland, Vertreten Durch Das Bundesministerium FüR Wirtschaft Und Energie
- Optical acoustic vector sensor4 Nov 2025US 12,462,401 B2Raytheon Company
- A method, system and computer program for event-based tracer tracking23 Jul 2026US 2026/0210995 A1ETH Zurich
- Near-wall velocimetry probe using optical fiber bundles23 Apr 2026US 2026/0110706 A1The George Washington University
- Systems and methods for estimating a speed of a vehicle5 Feb 2026US 2026/0036604 A1The Boeing Company
- Velocity measurement by decorrelation ratio of structured optical signals15 Jan 2026US 2026/0016499 A1Polyvalor, Limited Partnership
- System and method for fluid flow assessment8 Jan 2026US 2026/0009816 A1Regents of the University of Minnesota
Most cited
By later US patents
- Electrochemical sensor519US 5,670,031 AFraunhofer-Gesellschaft zur angewandten Forschung e.V. · 1997
- Scanner for airborne laser system116US 6,723,975 B2Honeywell International Inc. · 2004
- Method for optically detecting gas bubbles moving in a coolant109US 5,864,392 AAVL List GmbH · 1999
- Technique for simultaneous particle size and velocity measurement103US 4,251,733 A1981
- System for detecting fluorescing components in aerosols89US 5,999,250 ATSI Incorporated · 1999