B24B 3/242
Of step drills
Official title: {of step drills}
B24B3/242 (Of step drills) appears on 5 US grants and 5 published applications in this corpus.
Search patents in B24B- Granted patents
- 5
- Published applications
- 5
- Assignees
- 5
- Inventors
- 11
- Latest grant
- 28 Nov 2017
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 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 | 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 | 2 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Drill and method of manufacturing drill28 Nov 2017US 9,827,617 B2Subaru Corporation
- Unibit re-sharpening device12 Jul 2016US 9,387,543 B2
- Apparatus for regrinding step drills25 Dec 1984US 4,489,523 AThe Boeing Company
- Method for regrinding step drills9 Oct 1984US 4,475,320 AThe Boeing Company
- Device for grinding spiral drills14 Aug 1979US 4,164,100 A
- Apparatus and method for cutting edge preparation29 Sep 2022US 2022/0305605 A1Technische UniversitäT Dortmund
- Method to produce a radial run-out tool as well as a radial run-out tool27 Jun 2019US 2019/0193226 A1Kennametal Inc.
- Unibit re-sharpening device9 Jun 2016US 2016/0158859 A1
- Drill and method of manufacturing drill26 Nov 2015US 2015/0336182 A1Fuji Jukogyo Kabushiki Kaisha
- Method to produce a radial run-out tool as well as a radial run-out tool12 Mar 2015US 2015/0071718 A1Kennametal Inc.
Most cited
By later US patents