B23C 3/26
Making square or polygonal holes in workpieces
Official title: Making square or polygonal holes in workpieces, e.g. key holes in tools
B23C3/26 (Making square or polygonal holes in workpieces) appears on 4 US grants and 5 published applications in this corpus.
Search patents in B23C- Granted patents
- 4
- Published applications
- 5
- Assignees
- 5
- Inventors
- 8
- Latest grant
- 7 Feb 2017
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 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 | 0 | 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 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for milling a cutout in a workpiece, and workpiece having a cutout7 Feb 2017US 9,561,535 B2Gustav Klauke GmbH
- Rotary milling cutter and milling method using the same technical field11 Dec 2007US 7,306,412 B2Shinjo Metal Industries, Ltd.
- Eccentric boring tool and method7 Apr 1981US 4,260,306 AC. L. Frost & Son, Inc.
- Internal and external cutting tool7 Sep 1976US 3,978,765 A
- Method for Producing a Ventilation Bore in a Thrust Bearing of a Crankcase of a Reciprocating Internal Combustion Engine23 Jun 2016US 2016/0177869 A1Bayerische Motoren Werke Aktiengesellschaft
- Method for milling a cutout in a workpiece, and workpiece having a cutout24 Jul 2014US 2014/0202299 A1Gustav Klauke GmbH
- Method for Producing a Ventilation Bore in a Thrust Bearing of a Crankcase of a Reciprocating Internal Combustion Engine8 Aug 2013US 2013/0199507 A1Bayerische Motoren Werke Aktiengesellschaft
- Rotary cutting tool and cutting method using the same18 Jan 2007US 2007/0014644 A1Shinjo Metal Industries, Ltd.
- Corner cutting method and NC controller13 Jun 2002US 2002/0071732 A1Toshiba Kikai Kabushiki Kaisha
Most cited
By later US patents