F04B 53/129
Poppet valves
Official title: {Poppet valves}
F04B53/129 (Poppet valves) appears on 56 US grants and 37 published applications in this corpus.
Search patents in F04B- Granted patents
- 56
- Published applications
- 37
- Assignees
- 34
- Inventors
- 88
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 3 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 2 | 2 |
| 2019 | 2 | 3 |
| 2020 | 7 | 4 |
| 2021 | 2 | 3 |
| 2022 | 4 | 1 |
| 2023 | 1 | 6 |
| 2024 | 0 | 5 |
| 2025 | 5 | 1 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Inline landfill pump cycle counter9 Dec 2025US 12,492,696 B2Graco Minnesota Inc.
- Fracturing pump arrangement using a plunger with an internal fluid passage21 May 2026US 2026/0139667 A1Kerr Machine Co.
- Improved dart and clutch assembly26 Feb 2026US 2026/0055685 A1Epic Lift Systems
- Piston pump5 Feb 2026US 2026/0036119 A1
- Fracturing pump arrangement using a plunger with an internal fluid passage18 Sep 2025US 2025/0290505 A1Kerr Machine Co.
- Dart and clutch assembly17 Oct 2024US 2024/0344434 A1Epic Lift Systems
Most cited
By later US patents
- Dual piston pump with magnetically actuated pistons65US 5,662,461 A1997
- Liquid atomisers46US 4,025,046 ASociete Technique de Pulverisation · 1977
- Valve with replaceable seal element34US 4,922,957 ANational-Oilwell, L. P. · 1990
- Syringe adapted to overcome a pressure resistance33US 4,093,108 ACarl Schleicher & Schull · 1978
- Multi-material frac valve poppet23US 10,808,851 B1Halliburton Energy Services.Inc. · 2020