G01F 23/70
For sensing changes in level only at discrete points
Official title: for sensing changes in level only at discrete points
G01F23/70 (For sensing changes in level only at discrete points) appears on 165 US grants and 92 published applications in this corpus.
Search patents in G01F- Granted patents
- 165
- Published applications
- 92
- Assignees
- 101
- Inventors
- 273
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 7 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 2 |
| 2003 | 3 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 3 |
| 2006 | 5 | 4 |
| 2007 | 3 | 6 |
| 2008 | 5 | 0 |
| 2009 | 3 | 7 |
| 2010 | 3 | 7 |
| 2011 | 5 | 2 |
| 2012 | 7 | 0 |
| 2013 | 1 | 4 |
| 2014 | 3 | 5 |
| 2015 | 5 | 1 |
| 2016 | 2 | 3 |
| 2017 | 2 | 0 |
| 2018 | 3 | 5 |
| 2019 | 2 | 5 |
| 2020 | 8 | 3 |
| 2021 | 2 | 3 |
| 2022 | 7 | 19 |
| 2023 | 4 | 3 |
| 2024 | 8 | 3 |
| 2025 | 5 | 3 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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.
- Device for indicating a liquid level in a liquid container28 Oct 2025US 12,455,185 B2
- Humidifiers for respiratory gases7 Oct 2025US 12,434,034 B2Intersurgical AG
- Atomization device and culture device29 Jul 2025US 12,371,648 B2PHC Corporation
- Remote control box integrated with distribution board for smart farm irrigation17 Sep 2026US 2026/0271842 A1Korea Agriculture Institute Corporation
- Connection assembly and compressor30 Apr 2026US 2026/0117759 A1
- Sensor circuit for detecting refrigerant and related method9 Oct 2025US 2025/0314520 A1Mitsubishi Electric US, Inc.
- Reservoir tank and coolant module including the same10 Jul 2025US 2025/0223919 A1
- Level sensor19 Jun 2025US 2025/0198826 A1B/E Aerospace, Inc.
Most cited
By later US patents
- Recording apparatus97US 5,132,711 ACanon Kabushiki Kaisha · 1992
- Solenoid actuator having a magnetic flux sensor87US 5,032,812 AAutomatic Switch Company · 1991
- Manifold systems for high purity chemical delivery systems75US 5,590,695 AAdvanced Delivery & Chemical Systems, Ltd. · 1997
- Fail-safe leak detector including independent and repetetive sensing means68US 5,229,750 A1993
- Fail-safe leak detector65US 5,357,241 A1994