G01F 23/16
Indicating, recording, or alarm devices being actuated by mechanical or fluid means
Official title: Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid
G01F23/16 (Indicating, recording, or alarm devices being actuated by mechanical or fluid means) appears on 346 US grants and 170 published applications in this corpus.
Search patents in G01F- Granted patents
- 346
- Published applications
- 170
- Assignees
- 270
- Inventors
- 688
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 13 | 0 |
| 1978 | 14 | 0 |
| 1979 | 2 | 0 |
| 1980 | 8 | 0 |
| 1981 | 6 | 0 |
| 1982 | 8 | 0 |
| 1983 | 7 | 0 |
| 1984 | 8 | 0 |
| 1985 | 3 | 0 |
| 1986 | 9 | 0 |
| 1987 | 6 | 0 |
| 1988 | 9 | 0 |
| 1989 | 8 | 0 |
| 1990 | 5 | 0 |
| 1991 | 10 | 0 |
| 1992 | 13 | 0 |
| 1993 | 6 | 0 |
| 1994 | 12 | 0 |
| 1995 | 8 | 0 |
| 1996 | 3 | 0 |
| 1997 | 11 | 0 |
| 1998 | 7 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 4 | 0 |
| 2002 | 6 | 4 |
| 2003 | 9 | 5 |
| 2004 | 7 | 6 |
| 2005 | 4 | 3 |
| 2006 | 1 | 7 |
| 2007 | 2 | 0 |
| 2008 | 5 | 8 |
| 2009 | 2 | 6 |
| 2010 | 6 | 6 |
| 2011 | 5 | 2 |
| 2012 | 4 | 9 |
| 2013 | 8 | 6 |
| 2014 | 3 | 11 |
| 2015 | 3 | 5 |
| 2016 | 7 | 5 |
| 2017 | 5 | 7 |
| 2018 | 4 | 13 |
| 2019 | 4 | 13 |
| 2020 | 10 | 9 |
| 2021 | 8 | 10 |
| 2022 | 11 | 9 |
| 2023 | 4 | 12 |
| 2024 | 8 | 6 |
| 2025 | 7 | 6 |
| 2026 | 5 | 2 |
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
- Density invariant displacer-type liquid level measurement utilizing differential pressure transmitter23 Jun 2026US 12,663,304 B2Saudi Arabian Oil Company
- Method of operating a laboratory instrument2 Jun 2026US 12,644,900 B2Roche Molecular Systems, Inc.
- Volume determination system, a vehicle having a volume determination system, and methods of operating such a vehicle28 Apr 2026US 12,613,123 B2AGCO Corporation
- Systems and methods for fuel quantity measurement17 Feb 2026US 12,553,757 B2Simmonds Precision Products, Inc.
- Pressure sensor and electrical appliance17 Sep 2026US 2026/0276466 A1Illinois Tool Works Inc.
- Device and method for producing glass article and method for measuring liquid-surface height15 Jan 2026US 2026/0015277 A1Nippon Electric Glass Co., Ltd.
- Container with force sensor, substance measuring system with force sensor and substance providing system with force sensor9 Oct 2025US 2025/0314515 A1Pixart Imaging Inc.
- Density invariant displacer-type liquid level measurement utilizing differential pressure transmitter4 Sep 2025US 2025/0277687 A1Saudi Arabian Oil Company
- Cryogenic storage control system and storage assembly10 Jul 2025US 2025/0224082 A1
Most cited
By later US patents
- Apparatus and method for monitoring a sump pump173US 5,672,050 ALynx Electronics, Inc. · 1997
- Multiple-function fluid measuring and transmitting apparatus137US 5,469,749 AHitachi, Ltd. · 1995
- Ink remain detector having a flexible member and a liquid injection recording apparatus utilizing the detector90US 4,977,413 ACanon Kabushiki Kaisha · 1990
- Multi-function flow monitoring apparatus with area velocity sensor capability84US 5,633,809 AAmerican Sigma, Inc. · 1997
- Precise volume fluid dispenser77US 5,568,882 AABC TechCorp · 1996