G01F 23/0007
Indicating or measuring liquid level or level of fluent solid material: for
Official title: {for discrete indicating and measuring (G01F23/02 - G01F23/28 take precedence)}
G01F23/0007 (Indicating or measuring liquid level or level of fluent solid material: for) appears on 403 US grants and 528 published applications in this corpus.
Search patents in G01F- Granted patents
- 403
- Published applications
- 528
- Assignees
- 351
- Inventors
- 1,265
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 3 |
| 2003 | 2 | 1 |
| 2004 | 5 | 3 |
| 2005 | 3 | 5 |
| 2006 | 1 | 5 |
| 2007 | 2 | 9 |
| 2008 | 2 | 9 |
| 2009 | 5 | 5 |
| 2010 | 4 | 7 |
| 2011 | 6 | 4 |
| 2012 | 7 | 9 |
| 2013 | 9 | 17 |
| 2014 | 7 | 13 |
| 2015 | 12 | 19 |
| 2016 | 13 | 27 |
| 2017 | 11 | 25 |
| 2018 | 16 | 32 |
| 2019 | 28 | 30 |
| 2020 | 33 | 48 |
| 2021 | 25 | 40 |
| 2022 | 35 | 48 |
| 2023 | 41 | 48 |
| 2024 | 40 | 51 |
| 2025 | 35 | 40 |
| 2026 | 14 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pet consumable container and method of re-supplying pet consumables6 Oct 2026US 12,754,054 B1Pet Parents, LLC
- Liquid container, ink cartridge, and liquid discharge apparatus4 Aug 2026US 12,697,817 B2Ricoh Company, Ltd.
- Inundation damage determination device, inundation damage determination method, and program21 Jul 2026US 12,688,568 B2FUJIFILM Corporation
- Devices, systems, and methods for controlling liquid levels using isolation resistance14 Jul 2026US 12,681,509 B2Trane International Inc.
- Modular sensor fusion platform for hydrocarbon storage equipment monitoring30 Jun 2026US 12,669,397 B2Clean Connect AI, Inc.
- Devices, systems, and methods for controlling liquid levels using isolation resistance8 Oct 2026US 2026/0310244 A1Trane International Inc.
- Modular sensor fusion platform for hydrocarbon storage equipment monitoring24 Sep 2026US 2026/0287460 A1Clean Connect Al, Inc.
- Apparatus and method for monitoring a lubrication system of an aircraft power plant27 Aug 2026US 2026/0251491 A1Pratt & Whitney Canada Corp.
- Monitoring fullness of containers13 Aug 2026US 2026/0235430 A1Waste Harmonics, LLC
- Automatic water replenishment assembly and self-cleaning maintenance station6 Aug 2026US 2026/0224084 A1Beijing Roborock Technology Co., Ltd.
Most cited
By later US patents
- Ink supply container and system102US 5,187,498 AXerox Corporation · 1993
- Device for electrically detecting a liquid level94US 4,319,233 AKokusan Denki Co., Ltd. · 1982
- System and method for sensing harvested crop levels within an agricultural harvester80US 10,368,488 B2CNH Industrial America LLC · 2019
- Optical height of fill detection system and associated methods75US 6,226,081 B1Optikos Corporation · 2001
- Cycle control system for boiler and associated burner49US 6,390,027 B1C. Cowles & Company · 2002