F01D 25/20
Using lubrication pumps
Official title: using lubrication pumps
F01D25/20 (Using lubrication pumps) appears on 498 US grants and 553 published applications in this corpus.
Search patents in F01D- Granted patents
- 498
- Published applications
- 553
- Assignees
- 100
- Inventors
- 864
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 1 |
| 2003 | 1 | 4 |
| 2004 | 2 | 0 |
| 2005 | 2 | 4 |
| 2006 | 1 | 10 |
| 2007 | 4 | 9 |
| 2008 | 3 | 13 |
| 2009 | 9 | 17 |
| 2010 | 9 | 10 |
| 2011 | 6 | 11 |
| 2012 | 14 | 9 |
| 2013 | 11 | 14 |
| 2014 | 10 | 25 |
| 2015 | 17 | 17 |
| 2016 | 15 | 51 |
| 2017 | 12 | 42 |
| 2018 | 41 | 48 |
| 2019 | 43 | 40 |
| 2020 | 42 | 46 |
| 2021 | 36 | 30 |
| 2022 | 45 | 32 |
| 2023 | 37 | 35 |
| 2024 | 27 | 19 |
| 2025 | 44 | 37 |
| 2026 | 25 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Lubrication system for a turbine engine29 Sep 2026US 12,747,676 B2General Electric Company
- Integrated in-line emergency lube pump assembly for planetary gearbox configurations29 Sep 2026US 12,747,677 B2GE Avio S. r. l.
- Monitoring the oil of a lubrication device25 Aug 2026US 12,716,368 B2Safran Aero Boosters SA
- Failure detection of an oil transfer seal18 Aug 2026US 12,709,994 B1Pratt & Whitney Canada Corp.
- Lubrication system for a turbine engine11 Aug 2026US 12,704,078 B2General Electric Company
- Aircraft engine with lubricant system having windmilling configuration8 Oct 2026US 2026/0309050 A1Pratt & Whitney Canada Corp.
- Aircraft engine with lubricant system having windmilling configuration8 Oct 2026US 2026/0309051 A1Pratt & Whitney Canada Corp.
- Maintainable design for bearing compartment service line incorporating a grooved end8 Oct 2026US 2026/0309052 A1Rtx Corporation
- Working fluid system for aircraft powerplant27 Aug 2026US 2026/0251092 A1Rtx Corporation
- Lubrication system for a fan assembly of a turbine engine13 Aug 2026US 2026/0235046 A1GE AEROSPACE POLAND sp. z o. o.
Most cited
By later US patents
- Lubrication of windmilling journal bearings269US 7,662,059 B2United Technologies Corporation · 2010
- Microturbomachinery145US 5,932,940 AMassachusetts Institute of Technology · 1999
- Microturbomachinery113US 6,392,313 B1Massachusetts Institute of Technology · 2002
- Propfan turbine engine102US 4,887,424 AMotoren- und Turbinen-Union Munchen GmbH · 1989
- Oil system for aircraft gas turbine engine61US 4,531,358 AROLLS-ROYCE plc · 1985