F04B 39/08
Actuation of distribution members
F04B39/08 (Actuation of distribution members) appears on 162 US grants and 177 published applications in this corpus.
Search patents in F04B- Granted patents
- 162
- Published applications
- 177
- Assignees
- 132
- Inventors
- 344
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 3 |
| 2004 | 1 | 5 |
| 2005 | 1 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 6 |
| 2008 | 2 | 2 |
| 2009 | 3 | 5 |
| 2010 | 2 | 6 |
| 2011 | 1 | 2 |
| 2012 | 5 | 6 |
| 2013 | 3 | 7 |
| 2014 | 4 | 7 |
| 2015 | 3 | 13 |
| 2016 | 6 | 14 |
| 2017 | 9 | 5 |
| 2018 | 8 | 17 |
| 2019 | 14 | 17 |
| 2020 | 17 | 14 |
| 2021 | 9 | 10 |
| 2022 | 10 | 8 |
| 2023 | 9 | 6 |
| 2024 | 8 | 8 |
| 2025 | 11 | 10 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fluid system with a proppant mixing pump24 Mar 2026US 12,584,468 B2SPM Oil & Gas Inc.
- Vacuum pump10 Feb 2026US 12,546,300 B2Milwaukee Electric Tool Corporation
- Multi-cylinder reciprocating compressor13 Jan 2026US 12,523,220 B2Officine Mario Dorin S.P.A.
- Reciprocating compressor9 Dec 2025US 12,492,691 B2Mayekawa Mfg. Co., Ltd.
- Unloading device and air compressor11 Nov 2025US 12,467,450 B2Zf Commercial Vehicle Systems (Qingdao) Co., Ltd.
- Compressor unit30 Jul 2026US 2026/0218700 A1Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
- Connector structure of stepless capacity control actuator of reciprocating compressor7 May 2026US 2026/0126038 A1Beijing University of Chemical Technology
- Piston pump with quick exhaust slide valves2 Apr 2026US 2026/0092600 A1Samoa Industrial S.A.
- Pistonless apparatus and system for gas compression and the method for compression of a gas18 Dec 2025US 2025/0382977 A1Gas Technologies LLC
- Electro-magnetic throttle valve with integrated blowdown conduit6 Nov 2025US 2025/0341263 A1
Most cited
By later US patents
- Reciprocating piston air compressor49US 4,498,848 ADaimler-Benz Aktiengesellschaft · 1985
- Swash plate type compressor46US 5,478,212 ANippon Soken, Inc. · 1995
- Compressor inlet valve38US 4,362,475 AJoy Manufacturing Company · 1982
- Convertible engine-air compressor apparatus mounted on a vehicle for driving said vehicle37US 3,958,900 A1976
- Aerosol dispenser for fluid products comprising a piston pump assembly for generating compressed air36US 3,933,279 ACiba-Geigy Corporation · 1976