F01M 1/20
Concerning lubricant pressure
Official title: concerning lubricant pressure
F01M1/20 (Concerning lubricant pressure) appears on 161 US grants and 121 published applications in this corpus.
Search patents in F01M- Granted patents
- 161
- Published applications
- 121
- Assignees
- 110
- Inventors
- 380
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 1 | 2 |
| 2002 | 3 | 4 |
| 2003 | 3 | 3 |
| 2004 | 7 | 3 |
| 2005 | 1 | 2 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 2 |
| 2010 | 1 | 4 |
| 2011 | 0 | 2 |
| 2012 | 2 | 12 |
| 2013 | 3 | 5 |
| 2014 | 5 | 5 |
| 2015 | 3 | 7 |
| 2016 | 8 | 3 |
| 2017 | 0 | 6 |
| 2018 | 6 | 12 |
| 2019 | 7 | 8 |
| 2020 | 9 | 11 |
| 2021 | 9 | 8 |
| 2022 | 9 | 6 |
| 2023 | 9 | 4 |
| 2024 | 4 | 0 |
| 2025 | 2 | 7 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Controller, method, and engine system for engine crank control18 Aug 2026US 12,710,002 B2Cummins Power Generation Inc.
- Oil pressure control system and control method thereof23 Jun 2026US 12,662,952 B2Industrial Technology Research Institute
- Control device for hydrogen engine12 May 2026US 12,624,667 B2Toyota Jidosha Kabushiki Kaisha
- Internal combustion engine control device and internal combustion engine control method27 Jan 2026US 12,535,021 B2Hitachi Astemo, Ltd.
- Oil system of a gas turbine engine, comprising a first oil circuit and at least one second oil circuit, and gas turbine engine18 Mar 2025US 12,253,000 B2Rolls-Royce Deutschland Ltd & Co KG
- Hydraulic compensation device16 Jul 2026US 2026/0201897 A1Safran Aircraft Engines
- Oil supply apparatus for engine25 Jun 2026US 2026/0176989 A1Mazda Motor Corporation
- Engine system9 Apr 2026US 2026/0098489 A1Toyota Jidosha Kabushiki Kaisha
- Fuzzy logic-based ai system for detection and accommodation of oil system failures in the aircraft's propulsion system18 Dec 2025US 2025/0382069 A1Pratt & Whitney Canada Corp.
- Controller, method, and engine system for engine crank control27 Nov 2025US 2025/0361824 A1Cummins Power Generation Inc.
Most cited
By later US patents
- Engine protection system96US 5,070,832 ACummins Engine Company, Inc. · 1991
- Integrated emergency lubrication system59US 4,717,000 AAvco Corporation · 1988
- Filter assembly and preassembled drain valve unit therefor40US 5,468,386 AIng. Walter Hengst GmbH & Co. KG · 1995
- Filter with safety element for filtering engine oil34US 6,177,003 B1Filterwerk Mann & Hummel GmbH · 2001
- Over ride oil pump33US 4,531,485 A1985