F04B 53/007
Cylinder heads
Official title: {Cylinder heads}
F04B53/007 (Cylinder heads) appears on 193 US grants and 195 published applications in this corpus.
Search patents in F04B- Granted patents
- 193
- Published applications
- 195
- Assignees
- 124
- Inventors
- 381
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 4 | 1 |
| 2003 | 5 | 2 |
| 2004 | 1 | 2 |
| 2005 | 1 | 4 |
| 2006 | 0 | 3 |
| 2007 | 4 | 2 |
| 2008 | 5 | 3 |
| 2009 | 2 | 8 |
| 2010 | 1 | 3 |
| 2011 | 1 | 6 |
| 2012 | 4 | 6 |
| 2013 | 5 | 7 |
| 2014 | 4 | 9 |
| 2015 | 6 | 6 |
| 2016 | 10 | 14 |
| 2017 | 5 | 15 |
| 2018 | 9 | 9 |
| 2019 | 16 | 12 |
| 2020 | 6 | 5 |
| 2021 | 10 | 6 |
| 2022 | 7 | 9 |
| 2023 | 10 | 10 |
| 2024 | 10 | 14 |
| 2025 | 16 | 21 |
| 2026 | 18 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fluid end block and fluid end for a multiplex piston pump having multiple inlet passages15 Sep 2026US 12,736,035 B2
- Air compressor structure8 Sep 2026US 12,729,671 B2Unik World Industrial Co., Ltd.
- Fluid end with transition surface geometry18 Aug 2026US 12,710,036 B2Gd Energy Products, LLC
- Fluid end with transition surface geometry18 Aug 2026US 12,710,038 B2Gd Energy Products, LLC
- Fluid end assembly18 Aug 2026US 12,710,039 B2Kerr Machine Co.
- Fluid end17 Sep 2026US 2026/0275971 A1Kerr Machine Co.
- Fluid end block and fluid end for a multiplex piston pump having multiple inlet passages20 Aug 2026US 2026/0243239 A1
- Fluid end with counterflow passages13 Aug 2026US 2026/0235118 A1Gd Energy Products, LLC
- Hydraulic tool pump30 Jul 2026US 2026/0216855 A1Milwaukee Electric Tool Corporation
- Piston pump of the type having at least three pumping chambers23 Jul 2026US 2026/0210343 A1Mixtron S.R.L.
Most cited
By later US patents
- Fluid end with protected flow passages192US 9,739,130 B2Acme Industries, Inc. · 2017
- High pressure plunger pump housing and packing160US 6,382,940 B12002
- Valve guide and spring retainer assemblies160US 6,910,871 B12005
- Fluid end159US 7,335,002 B2Gardner-Denver Company · 2008
- High pressure plunger pump housing and packing155US 6,544,012 B12003