G01F 23/247
For discrete levels
Official title: {for discrete levels}
G01F23/247 (For discrete levels) appears on 220 US grants and 179 published applications in this corpus.
Search patents in G01F- Granted patents
- 220
- Published applications
- 179
- Assignees
- 159
- Inventors
- 443
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 7 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 6 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 2 |
| 2002 | 1 | 5 |
| 2003 | 7 | 2 |
| 2004 | 3 | 4 |
| 2005 | 2 | 6 |
| 2006 | 4 | 7 |
| 2007 | 4 | 4 |
| 2008 | 3 | 9 |
| 2009 | 3 | 4 |
| 2010 | 4 | 2 |
| 2011 | 4 | 5 |
| 2012 | 2 | 9 |
| 2013 | 6 | 6 |
| 2014 | 4 | 7 |
| 2015 | 4 | 6 |
| 2016 | 11 | 11 |
| 2017 | 7 | 10 |
| 2018 | 8 | 3 |
| 2019 | 7 | 17 |
| 2020 | 7 | 8 |
| 2021 | 10 | 18 |
| 2022 | 21 | 7 |
| 2023 | 2 | 9 |
| 2024 | 9 | 4 |
| 2025 | 1 | 8 |
| 2026 | 3 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dual-use level and temperature probe6 Oct 2026US 12,754,081 B2Goodrich Corporation
- Fill level gauge15 Sep 2026US 12,736,385 B2Endress + Hauser GmbH + Co. KG
- Systems and methods for tank level monitoring4 Aug 2026US 12,698,997 B2Copeland Comfort Control LP
- Control system for a liquid filling level and microscope stage including such a system1 Jul 2025US 12,343,727 B2Leica Mikrosysteme GmbH
- Systems and methods for storing fluid and measuring volume31 Dec 2024US 12,181,322 B2RAPA Technologies, LLC
- System and method for measuring a liquid level and estimating cooling capacity of a cold storage container6 Aug 2026US 2026/0227222 A1
- Electric fill level gauge4 Jun 2026US 2026/0153374 A1Endress + Hauser GmbH + Co. KG
- Heated temperature probe and method of using in a fryer vat28 May 2026US 2026/0146884 A1The Frymaster Corporation
- Temperature-normalized filling volume determination in containers21 May 2026US 2026/0139985 A1Endress + Hauser GmbH + Co. KG
- Liquid level sensor21 May 2026US 2026/0139986 A1Ecolab USA Inc.
Most cited
By later US patents
- Refrigerant level control in a refrigeration system98US 5,655,379 AGeneral Electric Company · 1997
- Platinum film resistor device85US 4,129,848 ARaytheon Company · 1978
- Material level indicator79US 5,142,909 A1992
- Method and apparatus for detecting the internal liquid level in a vessel57US 6,615,658 B22003
- Apparatus and method for controlling the use of carbon dioxide in dry cleaning clothes48US 5,970,554 ASnap-Tite Technologies, Inc. · 1999