F16J 9/069
With a "c"-shaped cross section along the entire circumference
Official title: {with a "C"-shaped cross section along the entire circumference}
F16J9/069 (With a "c"-shaped cross section along the entire circumference) appears on 18 US grants and 5 published applications in this corpus.
Search patents in F16J- Granted patents
- 18
- Published applications
- 5
- Assignees
- 10
- Inventors
- 44
- Latest grant
- 10 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Oil control ring10 Dec 2024US 12,163,592 B2Federal-Mogul Burscheid GmbH
- Multi-piece oil scraper ring with reduced friction1 Aug 2023US 11,713,811 B2Federal-Mogul Burscheid GmbH
- Piston ring for combustion engine2 Jun 2020US 10,670,146 B2Riken
- Piston ring having wear coating consisting of Cr.sub.2 N or a mixture of Cr.sub.2 N and Cr13 Oct 1998US 5,820,131 ATeikoku Piston Ring Co., Ltd.
- Seal device for piston rod4 Aug 1998US 5,788,246 ARiken
- Oil control ring29 Dec 2022US 2022/0412459 A1Federal-Mogul Burscheid GmbH
- Multi-piece oil scraper ring with reduced friction2 Sep 2021US 2021/0270368 A1Federal-Mogul Burscheid GmbH
- Piston ring for combustion engine5 Jul 2018US 2018/0187780 A1Riken
- Multi-part oil scraper ring for internal combustion engines1 Jul 2010US 2010/0164182 A1
- Two-Part Oil Scraper Ring for Internal Combustion Engines18 Dec 2008US 2008/0309022 A1
Most cited
By later US patents
- Three-piece oil control ring14US 4,194,747 AMuskegon Piston Ring Company · 1980
- Combined oil ring with spacer/expander having Cr.sub.2 N coating thereon14US 5,718,437 ATeikoku Piston Ring Co., Ltd. · 1998
- Piston ring having wear coating consisting of Cr.sub.2 N or a mixture of Cr.sub.2 N and Cr14US 5,820,131 ATeikoku Piston Ring Co., Ltd. · 1998
- Oil-ring including two rail rings and an expander-spacer ring which bites into the rail ring13US 4,548,416 AToyota Jidosha Kabushiki Kaisha · 1985
- Method of manufacturing a side rail of a combined oil ring10US 5,469,616 ATeikoku Piston Ring Co., Ltd. · 1995