B23B 2251/247
Drilling tools having a working portion at both ends of the shank
B23B2251/247 (Drilling tools having a working portion at both ends of the shank) appears on 21 US grants and 17 published applications in this corpus.
Search patents in B23B- Granted patents
- 21
- Published applications
- 17
- Assignees
- 10
- Inventors
- 28
- Latest grant
- 5 Mar 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 2 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 0 | 3 |
| 2013 | 0 | 0 |
| 2014 | 2 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 2 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Deburring tool and method for deburring a hole5 Mar 2019US 10,220,449 B2Seco Tools AB
- Hole-saw20 Jun 2017US 9,682,431 B2
- Fluted drill and fluted drill cutting head therefor22 Apr 2014US 8,702,356 B2Iscar, Ltd.
- Combination of the chucking device and a drill and a chucking device for a drill with cutting tips on both ends18 Mar 2014US 8,672,332 B2Kennametal Inc.
- Cutting tool29 Sep 2009US 7,594,784 B2Kennametal Inc.
- Deburring tool and method for deburring a hole23 Nov 2017US 2017/0334001 A1Seco Tools AB
- Hole-saw7 Sep 2017US 2017/0252834 A1
- Hole-Saw10 Dec 2015US 2015/0352645 A1
- Multi-Functional Cutting Tool and Tool Holder Therefor20 Sep 2012US 2012/0237305 A1TaeguTec, Ltd.
- Fluted Drill and Fluted Drill Cutting Head Therefor14 Jun 2012US 2012/0148358 A1Iscar, Ltd.
Most cited
By later US patents
- Spotweld removal tool29US 5,056,967 APremier Industrial Corporation · 1991
- Core drill20US 5,167,475 AKabushiki Kaisha Miyanaga · 1992
- Drill, bit, drill tool, and manufacturing method of drill bit17US 6,241,434 B1House B. M. Co., Ltd. · 2001
- Hole saw15US 5,035,550 AHouse B. M. Co., Ltd. · 1991
- Fluted drill and fluted drill cutting head therefor7US 8,702,356 B2Iscar, Ltd. · 2014