B23B 2251/60
Drills with pilots
B23B2251/60 (Drills with pilots) appears on 77 US grants and 80 published applications in this corpus.
Search patents in B23B- Granted patents
- 77
- Published applications
- 80
- Assignees
- 38
- Inventors
- 132
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 4 |
| 2007 | 1 | 2 |
| 2008 | 0 | 5 |
| 2009 | 6 | 1 |
| 2010 | 1 | 2 |
| 2011 | 1 | 1 |
| 2012 | 2 | 6 |
| 2013 | 2 | 3 |
| 2014 | 3 | 4 |
| 2015 | 3 | 4 |
| 2016 | 5 | 8 |
| 2017 | 5 | 5 |
| 2018 | 6 | 6 |
| 2019 | 5 | 10 |
| 2020 | 10 | 6 |
| 2021 | 1 | 4 |
| 2022 | 5 | 3 |
| 2023 | 2 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Micro-reinforced concentric twist drill1 Sep 2026US 12,722,213 B2Shandong Old Roughneck Machinery Technology Co. Ltd
- Drill bit comprising a centering tip6 May 2025US 12,290,956 B2Colt Technologies GmbH
- Hole saw arbor23 Apr 2024US 11,964,332 B2
- Auger26 Dec 2023US 11,850,767 B2Milwaukee Electric Tool Corporation
- Hole saw with hole enlargement guide and support piece detachable therefrom28 Nov 2023US 11,826,837 B2
- Holesaw assembly12 Mar 2026US 2026/0070133 A1Black & Decker Inc.
- Holesaw assembly19 Jun 2025US 2025/0196233 A1Black & Decker Inc.
- Retractable drill bit30 Jan 2025US 2025/0033126 A1Mueller International, LLC
- Micro-reinforced concentric twist drill22 Aug 2024US 2024/0278336 A1Shandong Old Roughneck Machinery Technology Co. Ltd
- Auger16 Jun 2022US 2022/0184845 A1Milwaukee Electric Tool Corporation
Most cited
By later US patents
- Tool support and drilling tool79US 4,340,327 AGulf & Western Manufacturing Company · 1982
- Self-centering drill bit with pilot tip73US 4,968,193 ABlack & Decker Inc. · 1990
- Self-centering drill bit with pilot tip64US 5,288,183 ABlack & Decker Inc. · 1994
- Self-centering drill bit with pilot tip, and process50US 6,050,754 ABlack & Decker Inc. · 2000
- Self-centering drill bit with pilot tip, and process50US 6,190,097 B1Black & Decker Inc. · 2001