G01F 23/0038
Indicating or measuring liquid level or level of fluent solid material: using
Official title: {using buoyant probes (with floats G01F23/30 - G01F23/76)}
G01F23/0038 (Indicating or measuring liquid level or level of fluent solid material: using) appears on 90 US grants and 64 published applications in this corpus.
Search patents in G01F- Granted patents
- 90
- Published applications
- 64
- Assignees
- 63
- Inventors
- 164
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 9 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 4 |
| 2003 | 4 | 3 |
| 2004 | 3 | 2 |
| 2005 | 0 | 4 |
| 2006 | 2 | 5 |
| 2007 | 3 | 5 |
| 2008 | 2 | 1 |
| 2009 | 2 | 2 |
| 2010 | 3 | 5 |
| 2011 | 0 | 2 |
| 2012 | 4 | 2 |
| 2013 | 1 | 3 |
| 2014 | 0 | 5 |
| 2015 | 1 | 2 |
| 2016 | 2 | 2 |
| 2017 | 3 | 1 |
| 2018 | 2 | 3 |
| 2019 | 1 | 3 |
| 2020 | 5 | 2 |
| 2021 | 2 | 2 |
| 2022 | 1 | 3 |
| 2023 | 3 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
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.
- Systems and methods for determining sludge levels in wastewater reservoirs19 Aug 2025US 12,392,651 B2Drone Des Champs Inc.
- Measurement of dielectric liquid level change in single phase or two-phase immersion cooling systems14 Mar 2023US 11,606,886 B2TMGCore, LLC
- Robot and method for calculating level of liquid in the liquid container7 Feb 2023US 11,573,114 B2LG Electronics Inc.
- Apparatus for determining a vertical level or density profile of a fluid column17 Jan 2023US 11,555,733 B2Johnson Matthey Public Limited Company
- Level sensor19 Jun 2025US 2025/0198826 A1B/E Aerospace, Inc.
- Energy transfer from a drum to a displacement element7 Nov 2024US 2024/0369035 A1Honeywell International Inc.
- Measurement of dielectric liquid level change in single phase or two-phase immersion cooling systems8 Dec 2022US 2022/0390266 A1TMGCore, LLC
- Systems and methods for determining sludge levels in wastewater reservoirs17 Nov 2022US 2022/0364899 A1Drone Des Champs Inc.
- Subsidence sensing device with liquid replenishing mechanism10 Feb 2022US 2022/0042839 A1
Most cited
By later US patents
- Liquid metering unit responsive to the weight of the metered liquid63US 4,320,775 AOctel S.A. · 1982
- System for monitoring storage tanks39US 5,132,923 AJ.A. King & Company, Inc. · 1992
- Apparatus for measuring the specific gravity, weight, level, and/or volume of a liquid in a container38US 5,157,968 A1992
- Automatically adjustable weir and environmentally protected sensor36US 4,867,872 AProtectaire Systems Co. · 1989
- Unanchored sensor for fluid characteristics29US 6,057,773 A2000