G01F 23/2961
For discrete levels
Official title: {for discrete levels (G01F23/2962 - G01F23/2968 take precedence)}
G01F23/2961 (For discrete levels) appears on 170 US grants and 134 published applications in this corpus.
Search patents in G01F- Granted patents
- 170
- Published applications
- 134
- Assignees
- 128
- Inventors
- 382
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 3 |
| 2003 | 5 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 6 |
| 2008 | 1 | 2 |
| 2009 | 2 | 3 |
| 2010 | 2 | 6 |
| 2011 | 6 | 4 |
| 2012 | 1 | 6 |
| 2013 | 2 | 6 |
| 2014 | 10 | 14 |
| 2015 | 8 | 8 |
| 2016 | 7 | 6 |
| 2017 | 6 | 3 |
| 2018 | 5 | 7 |
| 2019 | 7 | 8 |
| 2020 | 8 | 11 |
| 2021 | 6 | 8 |
| 2022 | 9 | 7 |
| 2023 | 4 | 6 |
| 2024 | 6 | 6 |
| 2025 | 4 | 5 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Interface position determining apparatus and method18 Aug 2026US 12,710,303 B2Mitsubishi Heavy Industries, Ltd.
- Water level measurement system28 Jul 2026US 12,693,149 B2Korea Hydro & Nuclear Power Co., Ltd.
- Water level measurement system12 Aug 2025US 12,385,772 B2Korea Hydro & Nuclear Power Co., Ltd.
- Liquid measurement systems, apparatus, and methods optimized with temperature sensing15 Jul 2025US 12,362,047 B2Bigfoot Biomedical, Inc.
- Liquid waste monitoring device20 May 2025US 12,306,074 B2Shimadzu Corporation
- Measuring device for autonomous and wireless detection of fluid media in an environment8 Oct 2026US 2026/0309533 A1Arianegroup SAS
- Ultrasonic liquid level sensor probe7 May 2026US 2026/0126316 A1Kouraku Co., Ltd.
- Cartridge for ultrasonic irradiation device and method therefor15 Jan 2026US 2026/0016330 A1Jeisys Medical Inc.
- Liquid level detector18 Dec 2025US 2025/0383223 A1
- Liquid measurement systems, apparatus, and methods optimized with temperature sensing23 Oct 2025US 2025/0329425 A1Bigfoot Biomedical, Inc.
Most cited
By later US patents
- Apparatus for level measurements288US 4,535,628 A1985
- Ultrasonic system for measuring fluid impedance or liquid level183US 4,320,659 APanametrics, Inc. · 1982
- System and method for sensing harvested crop levels within an agricultural harvester80US 10,368,488 B2CNH Industrial America LLC · 2019
- Liquid level sensor79US 5,697,248 AThe Whitaker Corporation · 1997
- Ultrasonic control of filling a container76US 4,437,497 A1984