G01F 23/18
Indicating, recording or alarm devices actuated electrically
G01F23/18 (Indicating, recording or alarm devices actuated electrically) appears on 357 US grants and 336 published applications in this corpus.
Search patents in G01F- Granted patents
- 357
- Published applications
- 336
- Assignees
- 288
- Inventors
- 880
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 8 | 0 |
| 1981 | 8 | 0 |
| 1982 | 5 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 6 | 0 |
| 1992 | 9 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 1 | 0 |
| 2002 | 5 | 6 |
| 2003 | 4 | 2 |
| 2004 | 3 | 8 |
| 2005 | 6 | 4 |
| 2006 | 8 | 8 |
| 2007 | 5 | 5 |
| 2008 | 4 | 5 |
| 2009 | 3 | 10 |
| 2010 | 5 | 10 |
| 2011 | 0 | 13 |
| 2012 | 9 | 9 |
| 2013 | 12 | 13 |
| 2014 | 7 | 19 |
| 2015 | 10 | 15 |
| 2016 | 9 | 10 |
| 2017 | 15 | 15 |
| 2018 | 12 | 22 |
| 2019 | 12 | 24 |
| 2020 | 18 | 19 |
| 2021 | 19 | 25 |
| 2022 | 14 | 19 |
| 2023 | 16 | 26 |
| 2024 | 21 | 19 |
| 2025 | 19 | 20 |
| 2026 | 8 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sensor for determining a liquid level for an aircraft tank, assembly of a tank and a sensor, method of using such a sensor28 Jul 2026US 12,693,148 B2Safran Helicopter Engines
- Physical activity user interfaces2 Jun 2026US 12,644,702 B2Apple Inc.
- Sensor interface technology2 Jun 2026US 12,644,752 B2Independent Technologies, Inc.
- Radio transmitter device for use in method and system for monitoring, controlling and optimizing flow of products10 Mar 2026US 12,572,913 B2KegSpeed, LLC
- Liquid level detectors17 Feb 2026US 12,553,762 B2Fresenius Medical Care Holdings, Inc.
- Storage container1 Oct 2026US 2026/0298691 A1Kathema GmbH
- Sterile filling of containers30 Jul 2026US 2026/0217396 A1
- Barometric level gauge, liquid storage device, and plant protection equipment2 Apr 2026US 2026/0092799 A1Guangzhou Xaircraft Technology Co., Ltd.
- Radio transmitter device for use in method and system for monitoring, controlling and optimizing flow of products2 Apr 2026US 2026/0094140 A1KegSpeed, LLC
- Method for Monitoring a Compressed Fluid Vessel19 Mar 2026US 2026/0079072 A1Air Products and Chemicals, Inc.
Most cited
By later US patents
- Apparatus and method for monitoring a sump pump173US 5,672,050 ALynx Electronics, Inc. · 1997
- Volumetric leak detection system for underground storage tanks and the like113US 4,852,054 ANDE Technology, Inc. · 1989
- Transmitter having input for receiving a process variable from a remote sensor108US 5,606,513 ARosemount Inc. · 1997
- Differential pressure measurement arrangement utilizing dual transmitters94US 5,899,962 ARosemount Inc. · 1999
- Multi-function flow monitoring apparatus with area velocity sensor capability84US 5,633,809 AAmerican Sigma, Inc. · 1997