B23B 2251/046
Variable
B23B2251/046 (Variable) appears on 56 US grants and 64 published applications in this corpus.
Search patents in B23B- Granted patents
- 56
- Published applications
- 64
- Assignees
- 39
- Inventors
- 132
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 1 | 2 |
| 2007 | 2 | 1 |
| 2008 | 1 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 2 | 7 |
| 2013 | 1 | 2 |
| 2014 | 3 | 2 |
| 2015 | 1 | 4 |
| 2016 | 2 | 5 |
| 2017 | 4 | 2 |
| 2018 | 5 | 3 |
| 2019 | 4 | 8 |
| 2020 | 4 | 5 |
| 2021 | 5 | 5 |
| 2022 | 4 | 3 |
| 2023 | 3 | 3 |
| 2024 | 0 | 3 |
| 2025 | 1 | 0 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Step drill bit2 Jun 2026US 12,643,160 B2Milwaukee Electric Tool Corporation
- Annular hole cutter21 Apr 2026US 12,605,774 B2Hougen Manufacturing, Inc.
- Drill bit13 May 2025US 12,296,395 B2Milwaukee Electric Tool Corporation
- Spiral step twist drill bit12 Dec 2023US 11,839,921 B2Danyang Kaiyiyuan Tools Co., Ltd.
- Step drill bit4 Jul 2023US 11,691,203 B2Milwaukee Electric Tool Corporation
- Masonry drill head7 May 2026US 2026/0124787 A1Ceratizit Hard Material Solutions S.A R.L.
- Drill5 Mar 2026US 2026/0061501 A1Sumitomo Electric Hardmetal Corp.
- Drilling tool14 Nov 2024US 2024/0375192 A1Milwaukee Electric Tool Corporation
- Modular cutting tool body and method for manufacturing the same21 Mar 2024US 2024/0091867 A1AB Sandvik Coromant
- Twist drill with multi-step drill point14 Mar 2024US 2024/0082929 A1Danyang Kaiyiyuan Tools Co., Ltd.
Most cited
By later US patents
- Precision drill bits49US 6,652,203 B1Credo Technology Corporation · 2003
- Drill having helical flute for discharging cutting fluid41US 5,478,176 ASeco Tools AB · 1995
- Stagger cut teeth39US 5,876,202 A1999
- Twist drill35US 5,350,261 AMitsubishi Materials Corporation · 1994
- Drill30US 4,561,813 AM. A. Ford Mfg. Co., Inc. · 1985