F01M 1/12
Closed-circuit lubricating systems not provided for in groups f01m1/02 - f01m1/10
Official title: Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
F01M1/12 (Closed-circuit lubricating systems not provided for in groups f01m1/02 - f01m1/10) appears on 449 US grants and 373 published applications in this corpus.
Search patents in F01M- Granted patents
- 449
- Published applications
- 373
- Assignees
- 194
- Inventors
- 868
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 7 | 0 |
| 1991 | 8 | 0 |
| 1992 | 8 | 0 |
| 1993 | 11 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 4 | 0 |
| 1998 | 11 | 0 |
| 1999 | 13 | 0 |
| 2000 | 9 | 0 |
| 2001 | 11 | 11 |
| 2002 | 13 | 16 |
| 2003 | 22 | 17 |
| 2004 | 16 | 27 |
| 2005 | 17 | 13 |
| 2006 | 18 | 9 |
| 2007 | 19 | 16 |
| 2008 | 5 | 7 |
| 2009 | 4 | 15 |
| 2010 | 6 | 14 |
| 2011 | 5 | 13 |
| 2012 | 16 | 12 |
| 2013 | 14 | 15 |
| 2014 | 12 | 13 |
| 2015 | 11 | 12 |
| 2016 | 11 | 25 |
| 2017 | 9 | 20 |
| 2018 | 19 | 13 |
| 2019 | 16 | 16 |
| 2020 | 14 | 20 |
| 2021 | 21 | 12 |
| 2022 | 16 | 11 |
| 2023 | 10 | 11 |
| 2024 | 9 | 17 |
| 2025 | 14 | 8 |
| 2026 | 7 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of operating a lubrication system for a turbine engine14 Jul 2026US 12,680,474 B2General Electric Company
- Compact volumetric pump19 May 2026US 12,631,293 B2Dana Italia S.R.L.
- Measuring device for metering fluids, and method for metering by means of a measuring device of this type14 Apr 2026US 12,601,620 B2AVL List GmbH
- Interchangeable engine assembly10 Feb 2026US 12,546,270 B2Arctic Cat Inc.
- Oil sump, in particular oil filter module, with a multi-part housing27 Jan 2026US 12,535,022 B2Schwäbische Hüttenwerke Automotive GmbH
- Systems and methods of lubrication of engines24 Sep 2026US 2026/0286869 A1Cummins Power Generation Inc.
- Power sources and transmission networks for auxiliary equipment onboard hydraulic fracturing units and associated methods17 Sep 2026US 2026/0275845 A1BJ Energy Solutions, LLC
- Interchangeable engine assembly18 Jun 2026US 2026/0168462 A1Arctic Cat Inc.
- Scavenge pump assembly for an aircraft engine oil system30 Apr 2026US 2026/0117683 A1Pratt & Whitney Canada Corp.
- Scavenge pump assembly for an aircraft engine oil system2 Apr 2026US 2026/0092538 A1Pratt & Whitney Canada Corp.
Most cited
By later US patents
- Power sources and transmission networks for auxiliary equipment onboard hydraulic fracturing units and associated methods133US 11,236,739 B2BJ Energy Solutions, LLC · 2022
- Engine having a high pressure hydraulic system and low pressure lubricating system131US 6,067,962 ACaterpillar Inc. · 2000
- Dry sump liquid filter102US 4,824,564 AEastman Kodak Company · 1989
- Power sources and transmission networks for auxiliary equipment onboard hydraulic fracturing units and associated methods98US 10,989,180 B2BJ Energy Solutions, LLC · 2021
- Power sources and transmission networks for auxiliary equipment onboard hydraulic fracturing units and associated methods85US 11,530,602 B2BJ Energy Solutions, LLC · 2022