B23B 2251/606
Being a twist drill
Official title: being a twist drill
B23B2251/606 (Being a twist drill) appears on 25 US grants and 25 published applications in this corpus.
Search patents in B23B- Granted patents
- 25
- Published applications
- 25
- Assignees
- 15
- Inventors
- 40
- Latest grant
- 23 Apr 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 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 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 2 |
| 2008 | 0 | 2 |
| 2009 | 3 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 1 | 0 |
| 2015 | 1 | 2 |
| 2016 | 1 | 2 |
| 2017 | 2 | 3 |
| 2018 | 2 | 1 |
| 2019 | 2 | 2 |
| 2020 | 3 | 1 |
| 2021 | 0 | 2 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hole saw arbor23 Apr 2024US 11,964,332 B2
- Drilling tool assembly including a step drill bit27 Sep 2022US 11,453,069 B2Milwaukee Electric Tool Corporation
- Cutting device having a pin engaging ramp15 Sep 2020US 10,773,315 B2Greenlee Tools, Inc.
- Adjustable diameter hole cutter3 Mar 2020US 10,576,553 B2Milwaukee Electric Tool Corporation
- Mandrel assembly for electric tool and electric tool having same4 Feb 2020US 10,549,357 B2Bosch Power Tools (China) Co., Ltd.
- Holesaw assembly12 Mar 2026US 2026/0070133 A1Black & Decker Inc.
- Holesaw assembly19 Jun 2025US 2025/0196233 A1Black & Decker Inc.
- Drilling tool assembly including a step drill bit1 Jul 2021US 2021/0197295 A1Milwaukee Electric Tool Corporation
- Hole saw arbor27 May 2021US 2021/0154750 A1
- Rotary cutting unit for a rotary saw10 Dec 2020US 2020/0384553 A1
Most cited
By later US patents
- Tool support and drilling tool79US 4,340,327 AGulf & Western Manufacturing Company · 1982
- Hole saw having a drill bit with a pilot tip45US 7,556,459 B2Black & Decker Inc. · 2009
- Hole saw boss45US 7,850,405 B22010
- Twist drill with a pilot tip38US 7,520,703 B2Black & Decker Inc. · 2009
- Adjustable hole cutters36US 8,840,344 B22014