G01P 5/26
Measuring speed of fluids: by measuring the direct influence of the streaming
Official title: by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave
G01P5/26 (Measuring speed of fluids: by measuring the direct influence of the streaming) appears on 530 US grants and 459 published applications in this corpus.
Search patents in G01P- Granted patents
- 530
- Published applications
- 459
- Assignees
- 326
- Inventors
- 1,150
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 5 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 7 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 9 | 0 |
| 1990 | 9 | 0 |
| 1991 | 11 | 0 |
| 1992 | 10 | 0 |
| 1993 | 12 | 0 |
| 1994 | 9 | 0 |
| 1995 | 5 | 0 |
| 1996 | 7 | 0 |
| 1997 | 13 | 0 |
| 1998 | 11 | 0 |
| 1999 | 11 | 0 |
| 2000 | 8 | 0 |
| 2001 | 6 | 0 |
| 2002 | 6 | 9 |
| 2003 | 15 | 8 |
| 2004 | 4 | 10 |
| 2005 | 8 | 9 |
| 2006 | 5 | 5 |
| 2007 | 7 | 10 |
| 2008 | 6 | 13 |
| 2009 | 10 | 12 |
| 2010 | 9 | 21 |
| 2011 | 14 | 18 |
| 2012 | 9 | 17 |
| 2013 | 10 | 22 |
| 2014 | 19 | 11 |
| 2015 | 17 | 19 |
| 2016 | 9 | 20 |
| 2017 | 20 | 21 |
| 2018 | 18 | 26 |
| 2019 | 20 | 32 |
| 2020 | 25 | 24 |
| 2021 | 22 | 31 |
| 2022 | 22 | 28 |
| 2023 | 25 | 23 |
| 2024 | 18 | 24 |
| 2025 | 21 | 31 |
| 2026 | 16 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- 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
- Method of and apparatus for measurement of blood flow using coherent light148US 4,109,647 AThe United States of America as represented by the Secretary of the Department of Health, Education and Welfare · 1978
- White light velocity interferometer144US 5,910,839 AThe Regents of the University of California · 1999
- Fiber optic catheter for accurate flow measurements137US 6,166,806 A2000
- Scanner for airborne laser system116US 6,723,975 B2Honeywell International Inc. · 2004