F16J 9/206
One-piece oil-scraping rings
Official title: {One-piece oil-scraping rings}
F16J9/206 (One-piece oil-scraping rings) appears on 84 US grants and 74 published applications in this corpus.
Search patents in F16J- Granted patents
- 84
- Published applications
- 74
- Assignees
- 48
- Inventors
- 161
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 2 |
| 2002 | 1 | 4 |
| 2003 | 1 | 0 |
| 2004 | 1 | 4 |
| 2005 | 1 | 1 |
| 2006 | 3 | 2 |
| 2007 | 3 | 1 |
| 2008 | 3 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 1 | 0 |
| 2012 | 1 | 3 |
| 2013 | 0 | 4 |
| 2014 | 0 | 3 |
| 2015 | 5 | 3 |
| 2016 | 0 | 2 |
| 2017 | 5 | 9 |
| 2018 | 6 | 5 |
| 2019 | 4 | 4 |
| 2020 | 1 | 8 |
| 2021 | 7 | 5 |
| 2022 | 5 | 3 |
| 2023 | 3 | 2 |
| 2024 | 1 | 0 |
| 2025 | 4 | 5 |
By publication year. Applications have been published since 2001.
Recent patents
- Oil scraper ring and piston ring set for an internal combustion engine23 Dec 2025US 12,504,073 B2Federal-Mogul Burscheid GmbH
- Oil scraper ring for pistons of an internal combustion engine2 Dec 2025US 12,486,897 B2Federal-Mogul Burscheid GmbH
- Diametrically expandable/collapsible piston seal19 Aug 2025US 12,392,251 B2Rtx Corporation
- Piston ring6 May 2025US 12,292,118 B2Tpr Co., Ltd.
- Cylinder of an internal combustion engine14 May 2024US 11,982,357 B2MAN Energy Solutions SE
- Oil ring and method for manufacturing oil ring2 Oct 2025US 2025/0305582 A1Nippon Piston Ring Co., Ltd.
- System And Method For Protecting A Hydraulic System Of A Work Machine19 Jun 2025US 2025/0198432 A1Komatsu America Corp.
- Two-Stroke Engine, Lubrication Device, and Cylinder12 Jun 2025US 2025/0188855 A1
- Piston Ring10 Apr 2025US 2025/0116331 A1Tpr Co., Ltd.
- Diametrically expandable/collapsible piston seal9 Jan 2025US 2025/0012197 A1Raytheon Technologies Corporation
Most cited
By later US patents
- Continuous piston rings for an internal combustion engine24US 6,065,438 ACaterpillar Inc. · 2000
- Stirling engine with improved sealing piston ring assembly23US 4,669,736 AStirling Thermal Motors, Inc. · 1987
- Piston ring employing elastomeric sealing member within the ring groove23US 5,474,307 A1995
- Flutter free piston ring assembly23US 5,598,763 AFord Motor Company · 1997
- Ultra low device volume piston system21US 5,490,445 AFord Motor Company · 1996