B23C 3/051
Reconditioning of valve seats
Official title: {Reconditioning of valve seats}
B23C3/051 (Reconditioning of valve seats) appears on 90 US grants and 40 published applications in this corpus.
Search patents in B23C- Granted patents
- 90
- Published applications
- 40
- Assignees
- 60
- Inventors
- 141
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 8 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 5 | 0 |
| 2003 | 3 | 6 |
| 2004 | 1 | 3 |
| 2005 | 0 | 2 |
| 2006 | 5 | 2 |
| 2007 | 2 | 2 |
| 2008 | 1 | 3 |
| 2009 | 1 | 2 |
| 2010 | 5 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 2 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 1 | 2 |
| 2018 | 1 | 1 |
| 2019 | 1 | 2 |
| 2020 | 2 | 1 |
| 2021 | 0 | 2 |
| 2022 | 0 | 3 |
| 2023 | 2 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Cutting tool assembly2 Sep 2025US 12,403,535 B2Seco Tools AB
- Combination tool and tool holder for a combination tool11 Jul 2023US 11,697,162 B2Kyocera Unimerco Tooling A/S
- Machining tool23 May 2023US 11,654,494 B2Honda Motor Co., Ltd.
- Replaceable seat seal assembly16 Jun 2020US 10,683,722 B2
- Manufacturing method for engine21 Jan 2020US 10,539,093 B2Toyota Jidosha Kabushiki Kaisha
- Apparatus for centering a pilot tool within a valve guide during valve seat cutting2 Oct 2025US 2025/0303482 A1Van Norman Machine India PVT LTD
- Machining tool11 May 2023US 2023/0143821 A1Honda Motor Co., Ltd.
- Cutting tool assembly29 Dec 2022US 2022/0410280 A1Seco Tools AB
- Cutting tool24 Nov 2022US 2022/0371110 A1Sumitomo Electric Hardmetal Corp.
- Mobile device for machining a workpiece14 Jul 2022US 2022/0219272 A1Dbm Mobile Feinstbearbeitung GmbH
Most cited
By later US patents
- Tool for the metal cutting machining of valve seats43US 7,530,769 B2Mapal Fabrik fur Prazisionswerkzeuge Dr. Kress KG · 2009
- Portable field machine for cutting, grinding and lapping valve seats28US 4,050,836 ARockwell International Corporation · 1977
- Method and machine for machining the surface of a valve seat24US 4,545,706 AHonda Giken Kogyo Kabushiki Kaisha · 1985
- Apparatus and method for machining valve seats in an engine cylinder head24US 5,829,928 AHarmand Family Limited Partnership · 1998
- Machine for finishing valve seats20US 4,147,462 ANeway Manufacturing, Inc. · 1979