F04D 9/001
Preventing vapour lock
Official title: {Preventing vapour lock (F04D9/041 takes precedence)}
F04D9/001 (Preventing vapour lock) appears on 200 US grants and 127 published applications in this corpus.
Search patents in F04D- Granted patents
- 200
- Published applications
- 127
- Assignees
- 127
- Inventors
- 399
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 8 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 9 | 0 |
| 2001 | 7 | 1 |
| 2002 | 1 | 1 |
| 2003 | 3 | 2 |
| 2004 | 2 | 0 |
| 2005 | 0 | 4 |
| 2006 | 1 | 4 |
| 2007 | 3 | 2 |
| 2008 | 1 | 4 |
| 2009 | 2 | 6 |
| 2010 | 2 | 8 |
| 2011 | 3 | 3 |
| 2012 | 4 | 5 |
| 2013 | 5 | 5 |
| 2014 | 8 | 7 |
| 2015 | 2 | 7 |
| 2016 | 2 | 6 |
| 2017 | 9 | 3 |
| 2018 | 4 | 4 |
| 2019 | 6 | 10 |
| 2020 | 5 | 2 |
| 2021 | 6 | 12 |
| 2022 | 9 | 1 |
| 2023 | 6 | 8 |
| 2024 | 6 | 10 |
| 2025 | 8 | 8 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Energy irrigation pump truck4 Aug 2026US 12,696,854 B2Zhejiang University of Water Resources and Electric Power
- Air venting12 May 2026US 12,624,704 B2Grundfos Holding A/S
- Method for controlling of a pump unit and a pump unit for pumping liquid or suspension5 May 2026US 12,618,413 B2Sulzer Management AG
- Intakes and gas separators for downhole pumps, and related apparatuses and methods28 Apr 2026US 12,612,915 B2
- Automatic exhaust mechanism17 Feb 2026US 12,553,442 B2Belgravia Wood Limited
- Electronic solenoid control for a self-priming electric pump6 Aug 2026US 2026/0226890 A1Fluid Handling LLC
- Gas separator for electric submersible pump2 Jul 2026US 2026/0185436 A1Halliburton Energy Services.Inc.
- Automatic exhaust mechanism21 May 2026US 2026/0139677 A1Belgravia Wood Limited
- Impeller rotor seal runner with anti-rotation feature7 May 2026US 2026/0126046 A1Pratt & Whitney Canada Corp.
- Method for controlling of a pump unit and a pump unit for pumping liquid or suspension20 Nov 2025US 2025/0354557 A1Sulzer Management AG
Most cited
By later US patents
- Electrical submersible pump and methods for enhanced utilization of electrical submersible pumps in the completion and production of wellbores267US 6,167,965 ABaker Hughes Incorporated · 2001
- Liquid-gas separator apparatus109US 4,481,020 ATRW Inc. · 1984
- Liquid petroleum gas submersible electric motor driven pump and drive coupling therefor84US 6,129,529 A2000
- Submersible well pump gas separator71US 5,207,810 ABaker Hughes Incorporated · 1993
- Recirculating gas separator for electric submersible pumps67US 4,981,175 AConoco Inc. · 1991