F04C 15/0088
Lubrication
Official title: {Lubrication (of machines or engines in general F01M)}
F04C15/0088 (Lubrication) appears on 215 US grants and 216 published applications in this corpus.
Search patents in F04C- Granted patents
- 215
- Published applications
- 216
- Assignees
- 161
- Inventors
- 555
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 9 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 5 | 6 |
| 2004 | 6 | 5 |
| 2005 | 3 | 3 |
| 2006 | 2 | 4 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 4 |
| 2010 | 1 | 8 |
| 2011 | 3 | 3 |
| 2012 | 5 | 8 |
| 2013 | 5 | 10 |
| 2014 | 6 | 13 |
| 2015 | 7 | 15 |
| 2016 | 11 | 15 |
| 2017 | 12 | 11 |
| 2018 | 13 | 7 |
| 2019 | 6 | 20 |
| 2020 | 10 | 13 |
| 2021 | 12 | 13 |
| 2022 | 18 | 15 |
| 2023 | 14 | 12 |
| 2024 | 15 | 17 |
| 2025 | 12 | 7 |
| 2026 | 7 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Automotive electric oil pump21 Jul 2026US 12,687,166 B2Pierburg Pump Technology GmbH
- Vacuum pump with oil drip shutoff2 Jun 2026US 12,644,453 B2
- Electric liquid pump24 Mar 2026US 12,584,484 B2Toyoda Gosei Co., Ltd.
- Vane pump featuring fluid lubrication for an impeller17 Mar 2026US 12,577,949 B2Schwäbische Hüttenwerke Automotive GmbH
- Screw pump and its components24 Feb 2026US 12,560,167 B2Illinois Tool Works Inc.
- Multiphase pump of the screw spindle pump type1 Oct 2026US 2026/0298229 A1Leistritz Pumpen GmbH
- Screw Pump and its Components14 May 2026US 2026/0132787 A1Illinois Tool Works Inc.
- Electric compressor30 Apr 2026US 2026/0117770 A1Kabushiki Kaisha Toyota Jidoshokki
- Vacuum Pump With Oil Drip Shutoff26 Mar 2026US 2026/0085686 A1
- Automotive electric oil pump4 Dec 2025US 2025/0369441 A1Pierburg Pump Technology GmbH
Most cited
By later US patents
- Gear pump with low pressure shaft lubrication31US 4,090,820 AKayabakogyokabushikikaisha · 1978
- Pump including integral reservoirs for permitting dry run of pump25US 5,449,280 AHypro Corporation · 1995
- Spline lubrication system24US 9,353,848 B2Hamilton Sundstrand Corporation · 2016
- Methods and apparatus for gear pump lubrication22US 4,470,776 ACommercial Shearing, Inc. · 1984
- Gear pump with low pressure shaft lubrication19US 4,265,602 AKayabakogyokabushikikaisha · 1981