F01B 25/00
Regulating, controlling or safety means
Official title: Regulating, controlling or safety means (controlling combustion engines F02D)
F01B25/00 (Regulating, controlling or safety means) appears on 110 US grants and 79 published applications in this corpus.
Search patents in F01B- Granted patents
- 110
- Published applications
- 79
- Assignees
- 82
- Inventors
- 204
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 5 |
| 2012 | 0 | 4 |
| 2013 | 3 | 7 |
| 2014 | 5 | 8 |
| 2015 | 4 | 5 |
| 2016 | 5 | 4 |
| 2017 | 8 | 5 |
| 2018 | 4 | 6 |
| 2019 | 8 | 7 |
| 2020 | 5 | 6 |
| 2021 | 2 | 2 |
| 2022 | 4 | 4 |
| 2023 | 2 | 2 |
| 2024 | 6 | 2 |
| 2025 | 5 | 6 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Vacuum engine11 Aug 2026US 12,704,068 B2Energie-Innovation AG
- Power system with carbon dioxide working fluid, generator, and propulsion system10 Mar 2026US 12,571,310 B2
- Steam engine27 Jan 2026US 12,535,005 B2Rd Estate GmbH & Co. KG
- Hydraulic control circuit for a hydraulic motor2 Dec 2025US 12,486,770 B2Danfoss Power Solutions GmbH & Co. OHG
- Heat engine25 Nov 2025US 12,480,479 B2
- Device for controlling a hydraulic pump or a hydraulic motor18 Jun 2026US 2026/0168523 A1Andreas Lupold Hydrotechnik GmbH
- Power system with carbon dioxide working fluid, generator, and propulsion system28 Aug 2025US 2025/0270931 A1
- Steam engine10 Jul 2025US 2025/0223905 A1Rd Estate GmbH & Co. KG
- Cylinder/reciprocating-piston device, compressed air engine, and vehicle1 May 2025US 2025/0137372 A1
- Vacuum Engine17 Apr 2025US 2025/0122804 A1Energie-Innovation AG
Most cited
By later US patents
- Piston and cylinder device33US 4,176,586 A1979
- Digital motor feedback for a position actuator33US 4,756,229 AUnited Technologies Corporation · 1988
- Pneumatic tool having a reverse air control valve with an integral regulator28US 3,989,113 AChicago Pneumatic Tool Company · 1976
- Synchronization cylinder24US 4,409,884 AMcDonnell Douglas Corporation · 1983
- Vibration protection in a variable speed compressor19US 7,895,003 B2Emerson Climate Technologies, Inc. · 2011