F04B 39/0292
Lubrication of pistons or cylinders
Official title: {Lubrication of pistons or cylinders}
F04B39/0292 (Lubrication of pistons or cylinders) appears on 92 US grants and 111 published applications in this corpus.
Search patents in F04B- Granted patents
- 92
- Published applications
- 111
- Assignees
- 63
- Inventors
- 208
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 4 |
| 2005 | 0 | 2 |
| 2006 | 2 | 6 |
| 2007 | 2 | 3 |
| 2008 | 0 | 3 |
| 2009 | 1 | 4 |
| 2010 | 1 | 4 |
| 2011 | 2 | 2 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 5 | 2 |
| 2015 | 1 | 11 |
| 2016 | 2 | 8 |
| 2017 | 3 | 5 |
| 2018 | 5 | 9 |
| 2019 | 8 | 8 |
| 2020 | 7 | 12 |
| 2021 | 11 | 10 |
| 2022 | 8 | 7 |
| 2023 | 9 | 2 |
| 2024 | 7 | 3 |
| 2025 | 2 | 1 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Oil cooled piston38US 4,056,044 ACaterpillar Tractor Co. · 1977
- Linear compressor25US 6,273,688 B1Matsushita Electric Industrial Co., Ltd. · 2001
- Hermetic refrigeration compressor19US 5,118,263 A1992
- Oil supply apparatus for friction portion of linear compressor19US 5,993,175 ALG Electronics Inc. · 1999
- Monoblock internal combustion engine with air compressor components17US 5,400,751 AHurricane Compressors · 1995