F16J 9/064
Rings with a flat annular side rail
Official title: {Rings with a flat annular side rail}
F16J9/064 (Rings with a flat annular side rail) appears on 123 US grants and 77 published applications in this corpus.
Search patents in F16J- Granted patents
- 123
- Published applications
- 77
- Assignees
- 42
- Inventors
- 228
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 2 |
| 2004 | 0 | 2 |
| 2005 | 0 | 0 |
| 2006 | 2 | 5 |
| 2007 | 2 | 0 |
| 2008 | 2 | 3 |
| 2009 | 0 | 3 |
| 2010 | 2 | 3 |
| 2011 | 0 | 2 |
| 2012 | 2 | 0 |
| 2013 | 3 | 0 |
| 2014 | 1 | 7 |
| 2015 | 1 | 5 |
| 2016 | 4 | 3 |
| 2017 | 7 | 8 |
| 2018 | 3 | 7 |
| 2019 | 6 | 3 |
| 2020 | 5 | 6 |
| 2021 | 4 | 5 |
| 2022 | 3 | 2 |
| 2023 | 4 | 3 |
| 2024 | 7 | 4 |
| 2025 | 1 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Axial three-way modulating valve26 May 2026US 12,638,089 B2Mueller Refrigeration, LLC
- Piston unit, top land member, and combination of piston unit parts19 Aug 2025US 12,392,301 B2Tpr Co., Ltd.
- Oil control ring10 Dec 2024US 12,163,592 B2Federal-Mogul Burscheid GmbH
- Piston ring15 Oct 2024US 12,117,085 B2Mahle International GmbH
- Dynamic axial seal systems and methods8 Oct 2024US 12,110,967 B2OneSubsea IP UK Limited
- Piston ring set30 Apr 2026US 2026/0117867 A1Riken
- Piston Unit, Top Land Member, and Combination of Piston Unit Parts3 Apr 2025US 2025/0109722 A1Tpr Co., Ltd.
- Piston ring and piston ring set13 Feb 2025US 2025/0052320 A1Riken
- Piston Ring Combination, and Internal Combustion Engine8 Aug 2024US 2024/0263700 A1Tpr Co., Ltd.
- Dynamic axial seal systems and methods4 Jul 2024US 2024/0218931 A1OneSubsea IP UK Limited
Most cited
By later US patents
- Piston ring employing elastomeric sealing member within the ring groove23US 5,474,307 A1995
- Spacer and expander member for holding and biasing piston ring rails21US 4,429,885 ARiken · 1984
- Piston ring assembly for automotive internal combustion engine21US 4,475,739 ANissan Motor Co., Ltd. · 1984
- Three-piece oil control ring assembly19US 5,195,758 AHastings Manufacturing Company · 1993
- Piston ring having tapered outwardly extending wiper19US 5,253,877 A1993