G01F 23/446
Using opto-electrically actuated indicating means
Official title: {using opto-electrically actuated indicating means}
G01F23/446 (Using opto-electrically actuated indicating means) appears on 19 US grants and 6 published applications in this corpus.
Search patents in G01F- Granted patents
- 19
- Published applications
- 6
- Assignees
- 9
- Inventors
- 18
- Latest grant
- 17 Nov 2020
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 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 2 | 1 |
| 2013 | 0 | 1 |
| 2014 | 2 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Invertible optical float switch17 Nov 2020US 10,840,045 B1
- Tethered float liquid level sensor6 Sep 2016US 9,435,679 B2Lawrence Livermore National Security, LLC
- Optical switch activator with glowable member10 Nov 2015US 9,182,553 B2
- Optical switch with glowable activator portion25 Feb 2014US 8,658,962 B2
- Optical switches for tank environments4 Feb 2014US 8,643,498 B1
- Optical Switch Activator with Glowable Member5 Jun 2014US 2014/0153869 A1
- Optical Switch Activator with Glowable Member16 May 2013US 2013/0121637 A1
- Tethered float liquid level sensor15 Mar 2012US 2012/0060601 A1Lawrence Livermore National Security, LLC
- Gauge for Bulk Fuel Storage Tanks18 Nov 2010US 2010/0288042 A1
- Optical Switch11 Oct 2007US 2007/0236914 A1
Most cited
By later US patents
- Error-compensated temperature measuring system27US 5,655,841 AWhessoe Varec, Inc. · 1997
- Method and system for encoding fluid level16US 6,992,757 B2Varec, Inc. · 2006
- Total precipitation gauge with float sensor12US 5,245,874 ARainWise, Inc. · 1993
- Fiber optic displacement sensor using fiber optic coil11US 5,164,605 AThe Babcock & Wilcox Company · 1992
- Optical switch10US 7,234,830 B1Cox Research & Technology, Inc. · 2007