G01F 25/22
Checking proper indicating of discrete level by floats
Official title: {Checking proper indicating of discrete level by floats}
G01F25/22 (Checking proper indicating of discrete level by floats) appears on 44 US grants and 37 published applications in this corpus.
Search patents in G01F- Granted patents
- 44
- Published applications
- 37
- Assignees
- 44
- Inventors
- 103
- Latest grant
- 9 Apr 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 3 |
| 2014 | 0 | 2 |
| 2015 | 4 | 1 |
| 2016 | 0 | 0 |
| 2017 | 3 | 4 |
| 2018 | 1 | 2 |
| 2019 | 3 | 2 |
| 2020 | 3 | 3 |
| 2021 | 6 | 8 |
| 2022 | 2 | 3 |
| 2023 | 3 | 0 |
| 2024 | 2 | 0 |
| 2025 | 0 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for the functional testing of a fluid level warning indicator9 Apr 2024US 11,951,961 B2ZF Active Safety GmbH
- Apparatus for determining a vertical level or density of a material column6 Feb 2024US 11,892,336 B2Johnson Matthey Public Limited Company
- Tank maintenance access chamber19 Sep 2023US 11,761,810 B2Franklin Fueling Systems, Inc.
- Sub-resolution measurement of fuel in fuel tank31 Jan 2023US 11,566,575 B2Intangles Lab Pvt. Ltd.
- Apparatus for determining a vertical level or density profile of a fluid column17 Jan 2023US 11,555,733 B2Johnson Matthey Public Limited Company
- Ink liquid level height measuring apparatus and image forming apparatus27 Mar 2025US 2025/0100290 A1Konica Minolta, Inc.
- Foam detection technique-algorithm for steam boilers using lwco device6 Mar 2025US 2025/0075900 A1Fluid Handling LLC
- Apparatus for determining a vertical level or density of a material column15 Dec 2022US 2022/0397443 A1Johnson Matthey Public Limited Company
- Sub-resolution measurement of fuel in fuel tank22 Sep 2022US 2022/0298985 A1Intangles Lab Pvt. Ltd.
- Tank maintenance access chamber26 May 2022US 2022/0163369 A1Franklin Fueling Systems, Inc.
Most cited
By later US patents
- Analog hall-effect liquid level detector and method87US 5,636,548 ATesoro Alaska Petroleum Company · 1997
- Method and apparatus for leak detection with float excitation and self-calibration26US 5,421,193 AProEco, Inc. · 1995
- Liquid level float gauge calibration means15US 4,402,209 AQualitrol Corporation · 1983
- Float assembly checking system15US 4,821,022 A1989
- Apparatus for monitoring liquid levels and methods for calibrating same15US 5,705,733 A1998