F16J 9/12
Details
F16J9/12 (Details) appears on 700 US grants and 598 published applications in this corpus.
Search patents in F16J- Granted patents
- 700
- Published applications
- 598
- Assignees
- 312
- Inventors
- 1,243
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 6 | 0 |
| 1978 | 14 | 0 |
| 1979 | 7 | 0 |
| 1980 | 10 | 0 |
| 1981 | 6 | 0 |
| 1982 | 15 | 0 |
| 1983 | 6 | 0 |
| 1984 | 12 | 0 |
| 1985 | 7 | 0 |
| 1986 | 9 | 0 |
| 1987 | 9 | 0 |
| 1988 | 7 | 0 |
| 1989 | 11 | 0 |
| 1990 | 11 | 0 |
| 1991 | 12 | 0 |
| 1992 | 10 | 0 |
| 1993 | 10 | 0 |
| 1994 | 8 | 0 |
| 1995 | 9 | 0 |
| 1996 | 3 | 0 |
| 1997 | 9 | 0 |
| 1998 | 9 | 0 |
| 1999 | 11 | 0 |
| 2000 | 9 | 0 |
| 2001 | 11 | 5 |
| 2002 | 15 | 11 |
| 2003 | 6 | 8 |
| 2004 | 6 | 16 |
| 2005 | 5 | 8 |
| 2006 | 11 | 13 |
| 2007 | 8 | 13 |
| 2008 | 8 | 16 |
| 2009 | 5 | 13 |
| 2010 | 8 | 11 |
| 2011 | 5 | 12 |
| 2012 | 9 | 18 |
| 2013 | 6 | 30 |
| 2014 | 13 | 27 |
| 2015 | 24 | 40 |
| 2016 | 26 | 39 |
| 2017 | 36 | 49 |
| 2018 | 32 | 33 |
| 2019 | 40 | 42 |
| 2020 | 34 | 38 |
| 2021 | 33 | 35 |
| 2022 | 33 | 33 |
| 2023 | 27 | 24 |
| 2024 | 28 | 24 |
| 2025 | 21 | 25 |
| 2026 | 19 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Wear ring and wear ring arrangement29 Sep 2026US 12,747,788 B2Trelleborg Sealing Solutions Germany GmbH
- Seal assembly with anti-rotation feature25 Aug 2026US 12,716,490 B2Pratt & Whitney Canada Corp.
- Anti-friction sealing rings4 Aug 2026US 12,698,829 B2Mainspring Energy, Inc.
- Piston ring set28 Jul 2026US 12,692,938 B2
- Piston ring assembly14 Jul 2026US 12,680,613 B2Mahle International GmbH
- Piston sealing ring assembly having a gap cover element13 Aug 2026US 2026/0235203 A1Mainspring Energy, Inc.
- Method for reducing adhesive damage due to loss of lubrication in aerospace piston rings23 Jul 2026US 2026/0210257 A1Rtx Corporation
- Piston Seal Ring Bypass9 Jul 2026US 2026/0194140 A1Rtx Corporation
- Internal combustion engine and vehicle11 Jun 2026US 2026/0160218 A1Isuzu Motors Limited
- Dual-Component Ring Seal for Gland of Hydraulic Piston11 Jun 2026US 2026/0160331 A1Specialized Seal Design and Distribution, Inc.
Most cited
By later US patents
- Non-circular piston rings1,033US 4,957,212 AGoetze AG · 1990
- Split ring seal with slip joint55US 4,759,555 AEG&G Pressure Science, Inc. · 1988
- Piston for an internal combustion engine and method for producing same38US 4,334,507 AMahle GmbH · 1982
- Gas lubricated piston ring assembly37US 4,681,326 ACummins Engine Company, Inc. · 1987
- Split seal ring with interlocking cut35US 4,533,149 AJ. I. Case Company · 1985