B23C 3/058
Reconditioning of valves
Official title: {Reconditioning of valves}
B23C3/058 (Reconditioning of valves) appears on 4 US grants and 1 published applications in this corpus.
Search patents in B23C- Granted patents
- 4
- Published applications
- 1
- Assignees
- 5
- Inventors
- 20
- Latest grant
- 19 Jan 1999
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 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 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Valve resurfacing device19 Jan 1999US 5,860,774 ANeway Manufacturing, Inc.
- Device for grinding the head of a valve, especially of an internal-combustion engine6 Apr 1993US 5,199,222 ASERDI - Societe d'Etudes de Realisation et de Diffusion Industrielles
- Valve resurfacing apparatus and method for making the same5 Jun 1990US 4,930,261 AHein-Werner Corporation
- Apparatus and process for refurbishing valves10 Jun 1986US 4,593,445 AWestinghouse Electric Corp.
Most cited
By later US patents
- Apparatus and process for refurbishing valves23US 4,593,445 AWestinghouse Electric Corp. · 1986
- Valve resurfacing apparatus and method for making the same5US 4,930,261 AHein-Werner Corporation · 1990
- Valve resurfacing device4US 5,860,774 ANeway Manufacturing, Inc. · 1999
- Device for grinding the head of a valve, especially of an internal-combustion engine3US 5,199,222 ASERDI - Societe d'Etudes de Realisation et de Diffusion Industrielles · 1993