B24B 7/165
End faces of piston rings
Official title: {end faces of piston rings}
B24B7/165 (End faces of piston rings) appears on 4 US grants and 0 published applications in this corpus.
Search patents in B24B- Granted patents
- 4
- Published applications
- 0
- Assignees
- 3
- Inventors
- 5
- Latest grant
- 23 Aug 2005
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 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 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Piston ring grinder23 Aug 2005US 6,932,686 B1Autosales, Incorporated
- Combined machining apparatus for making piston rings15 May 2001US 6,230,379 B1Komatsu Machinery Corp.
- Piston ring grinder23 Oct 1990US 4,964,240 A
- Ring manufacture, productive of face contact seal27 Jul 1976US 3,971,165 AInternational Harvester Company
No published applications in this class yet.
Most cited
By later US patents
- Piston ring grinder4US 6,932,686 B1Autosales, Incorporated · 2005
- Ring manufacture, productive of face contact seal3US 3,971,165 AInternational Harvester Company · 1976
- Combined machining apparatus for making piston rings3US 6,230,379 B1Komatsu Machinery Corp. · 2001
- Piston ring grinder1US 4,964,240 A1990