F04D 9/045
The means being liquid level sensors
Official title: {the means being liquid level sensors}
F04D9/045 (The means being liquid level sensors) appears on 14 US grants and 12 published applications in this corpus.
Search patents in F04D- Granted patents
- 14
- Published applications
- 12
- Assignees
- 12
- Inventors
- 24
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 2 |
| 2023 | 1 | 1 |
| 2024 | 1 | 3 |
| 2025 | 2 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Float box with valve12 May 2026US 12,624,697 B2B.B.A. Participaties B.V.
- Vacuum priming system for close-coupled pumps7 Oct 2025US 12,435,722 B2Cornell Pump Company
- Smart vacuum priming system8 Apr 2025US 12,270,421 B2Cornell Pump Company
- Sensing device, system and method for a pump13 Feb 2024US 11,898,577 B2Weir Minerals Australia Ltd.
- Debris trap for capturing debris flowing in a stream of liquid and priming assembly for a pump16 May 2023US 11,649,835 B2Sulzer Management AG
- Float box with valve12 Feb 2026US 2026/0043405 A1B.B.A. Participaties B.V.
- Smart vacuum priming system22 Aug 2024US 2024/0280107 A1Cornell Pump Company
- Monitoring and predicting the operation of a pump arranged in a tank for transporting a liquid product on board a vessel11 Jul 2024US 2024/0232481 A9Gaztransport Et Technigaz
- Monitoring and predicting the operation of a pump arranged in a tank for transporting a liquid product on board a vessel25 Apr 2024US 2024/0135073 A1Gaztransport Et Technigaz
- Vacuum priming system for close-coupled pumps12 Oct 2023US 2023/0323882 A1Cornell Pump Company
Most cited
By later US patents
- Sewage pump priming system28US 4,067,663 AThe Chemithon Corporation · 1978
- Vacuum-assisted pump23US 6,409,478 B1Roper Holdings, Inc. · 2002
- Self-priming centrifugal pump19US 6,783,330 B2Pioneer Pump Inc. · 2004
- Well point system and apparatus16US 4,606,704 A1986
- Vacuum-assisted pump6US 6,575,706 B2Roper Holdings, Inc. · 2003