G01F 1/661
Using light
Official title: using light
G01F1/661 (Using light) appears on 314 US grants and 326 published applications in this corpus.
Search patents in G01F- Granted patents
- 314
- Published applications
- 326
- Assignees
- 243
- Inventors
- 738
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 8 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 1 |
| 2002 | 5 | 7 |
| 2003 | 5 | 5 |
| 2004 | 3 | 4 |
| 2005 | 4 | 5 |
| 2006 | 5 | 5 |
| 2007 | 8 | 3 |
| 2008 | 1 | 10 |
| 2009 | 2 | 8 |
| 2010 | 6 | 9 |
| 2011 | 6 | 3 |
| 2012 | 6 | 6 |
| 2013 | 6 | 11 |
| 2014 | 3 | 12 |
| 2015 | 7 | 9 |
| 2016 | 12 | 19 |
| 2017 | 16 | 20 |
| 2018 | 14 | 19 |
| 2019 | 20 | 18 |
| 2020 | 14 | 23 |
| 2021 | 17 | 31 |
| 2022 | 21 | 24 |
| 2023 | 26 | 31 |
| 2024 | 14 | 19 |
| 2025 | 20 | 14 |
| 2026 | 11 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical measurement of flow parameters22 Sep 2026US 12,742,669 B2Flowlit Ltd.
- Machine logic multi-phase metering using distributed acoustic sensing data8 Sep 2026US 12,729,985 B2ConocoPhillips Company
- System and method for open-path sensing of a fluid28 Jul 2026US 12,693,218 B2Imec Vzw
- Measurement of fluid flow velocity with high spatial and temporal resolution16 Jun 2026US 12,656,157 B2University of South Carolina
- Mist flow rate measuring apparatus2 Jun 2026US 12,644,743 B2TMEIC Corporation
- Digitally assisted microwave multiphase flow meter1 Oct 2026US 2026/0298693 A1King Abdullah University of Science and Technology
- Pollution Protected Sensor Units24 Sep 2026US 2026/0287477 A1Belimo Holding AG
- Substrate processing device, substrate processing method, and storage medium2 Jul 2026US 2026/0183810 A1Ebara Corporation
- Optical probe for measuring wall-shear stress18 Jun 2026US 2026/0169022 A1The George Washington University
- Automated Cell Sorting Stage and Methods For Using Same23 Apr 2026US 2026/0110616 A1
Most cited
By later US patents
- Flow meter567US 6,874,480 B1Combustion Dynamics Corp. · 2005
- Fluid flow sensing apparatus for in vivo and industrial applications employing novel differential optical fiber pressure sensors260US 5,178,153 A1993
- Method and apparatus for controlling infusion volume169US 5,899,665 AAlaris Medical Systems, Inc. · 1999
- Apparatus and method for controlling speed of suction motor in vacuum cleaner161US 5,323,483 AGoldstar Co., Ltd. · 1994
- Fiber optic catheter for accurate flow measurements137US 6,166,806 A2000