G01F 23/706
Using opto-electrically actuated indicating means
Official title: {using opto-electrically actuated indicating means}
G01F23/706 (Using opto-electrically actuated indicating means) appears on 38 US grants and 26 published applications in this corpus.
Search patents in G01F- Granted patents
- 38
- Published applications
- 26
- Assignees
- 24
- Inventors
- 57
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 1 | 2 |
| 2007 | 2 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 1 |
| 2011 | 2 | 2 |
| 2012 | 3 | 0 |
| 2013 | 1 | 3 |
| 2014 | 3 | 2 |
| 2015 | 2 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 3 |
| 2020 | 2 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 5 |
| 2023 | 0 | 0 |
| 2024 | 2 | 1 |
| 2025 | 2 | 1 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cooling device and image forming apparatus30 Jun 2026US 12,669,775 B2KYOCERA Document Solutions Inc.
- Liquid sensor and hydraulic unit31 Mar 2026US 12,590,943 B2Daikin Industries, Ltd.
- Humidifiers for respiratory gases7 Oct 2025US 12,434,034 B2Intersurgical AG
- Atomization device and culture device29 Jul 2025US 12,371,648 B2PHC Corporation
- Liquid surface detection device, atomization device, and culture device3 Dec 2024US 12,158,366 B2Phc Holdings Corporation
- Reservoir tank and coolant module including the same10 Jul 2025US 2025/0223919 A1
- Cooling device and image forming apparatus26 Dec 2024US 2024/0426647 A1KYOCERA Document Solutions Inc.
- Liquid surface detection device, atomization device, and culture device11 Aug 2022US 2022/0252445 A1Phc Holdings Corporation
- Atomization device and culture device4 Aug 2022US 2022/0243166 A1PHC Corporation
- Liquid sensor and hydraulic unit21 Jul 2022US 2022/0228983 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Recording apparatus97US 5,132,711 ACanon Kabushiki Kaisha · 1992
- Gauge for measuring liquid levels57US 5,950,487 AVista Research, Inc. · 1999
- Fluid level optical detector with float having opaque and transmissive portions55US 7,259,384 B2The Boeing Company · 2007
- Fiber optic liquid level sensor40US 4,836,632 ANational Magnetic Sensors Inc. · 1989
- Tank level gauge and sensor head therefor30US 5,874,899 AMidland Manufacturing Corp. · 1999