G01F 23/0023
Indicating or measuring liquid level or level of fluent solid material: with
Official title: {with a probe suspended by a wire or thread (with floats G01F23/40)}
G01F23/0023 (Indicating or measuring liquid level or level of fluent solid material: with) appears on 137 US grants and 77 published applications in this corpus.
Search patents in G01F- Granted patents
- 137
- Published applications
- 77
- Assignees
- 105
- Inventors
- 279
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 6 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 2 |
| 2003 | 3 | 2 |
| 2004 | 2 | 0 |
| 2005 | 1 | 2 |
| 2006 | 2 | 4 |
| 2007 | 1 | 4 |
| 2008 | 2 | 1 |
| 2009 | 2 | 5 |
| 2010 | 2 | 2 |
| 2011 | 2 | 0 |
| 2012 | 1 | 3 |
| 2013 | 1 | 3 |
| 2014 | 2 | 4 |
| 2015 | 2 | 1 |
| 2016 | 4 | 1 |
| 2017 | 2 | 11 |
| 2018 | 0 | 6 |
| 2019 | 11 | 5 |
| 2020 | 4 | 2 |
| 2021 | 5 | 3 |
| 2022 | 2 | 4 |
| 2023 | 2 | 1 |
| 2024 | 0 | 3 |
| 2025 | 2 | 4 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Energy transfer from a drum to a displacement element11 Aug 2026US 12,704,107 B2Honeywell International Inc.
- Information processing device and non-transitory computer-readable storage medium storing program7 Jul 2026US 12,674,698 B2Seiko Epson Corporation
- Sensor interface technology2 Jun 2026US 12,644,752 B2Independent Technologies, Inc.
- Down hole measurement system12 May 2026US 12,624,632 B2Mti Group Pty Ltd
- No emission tank gauge14 Apr 2026US 12,601,624 B2
- Piezoelectric sensor and liquid level measuring system20 Aug 2026US 2026/0243595 A1ABB Schweiz AG
- Portable Ullage Measurement Gauge11 Jun 2026US 2026/0160586 A1
- A level sensing system and a method of operating a level sensing system21 May 2026US 2026/0139987 A1Hydro International plc
- Fill level sensor assembly29 Jan 2026US 2026/0029267 A1B/E Aerospace, Inc.
- Liquid temperature sensor apparatus21 Aug 2025US 2025/0264364 A1
Most cited
By later US patents
- Fluid indicator for a containment vessel288US 4,880,982 AImpex Production & Development A/S (Ltd.) · 1989
- Liquid-level detector70US 4,989,452 ASolinst Canada Limited · 1991
- Hall effect liquid level sensing apparatus and method42US 4,804,944 A1989
- Apparatus, method and system for monitoring fluid29US 5,211,678 AHalliburton Company · 1993
- Lubrication system level control28US 8,448,750 B2Caterpillar Inc. · 2013