B23B 51/02
Twist drills
B23B51/02 (Twist drills) appears on 805 US grants and 825 published applications in this corpus.
Search patents in B23B- Granted patents
- 805
- Published applications
- 825
- Assignees
- 304
- Inventors
- 1,332
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 6 | 0 |
| 1987 | 8 | 0 |
| 1988 | 9 | 0 |
| 1989 | 13 | 0 |
| 1990 | 10 | 0 |
| 1991 | 10 | 0 |
| 1992 | 10 | 0 |
| 1993 | 11 | 0 |
| 1994 | 7 | 0 |
| 1995 | 10 | 0 |
| 1996 | 5 | 0 |
| 1997 | 15 | 0 |
| 1998 | 14 | 0 |
| 1999 | 18 | 0 |
| 2000 | 22 | 0 |
| 2001 | 22 | 13 |
| 2002 | 13 | 24 |
| 2003 | 19 | 38 |
| 2004 | 15 | 19 |
| 2005 | 14 | 21 |
| 2006 | 16 | 30 |
| 2007 | 16 | 19 |
| 2008 | 17 | 35 |
| 2009 | 17 | 34 |
| 2010 | 16 | 45 |
| 2011 | 19 | 31 |
| 2012 | 22 | 35 |
| 2013 | 22 | 33 |
| 2014 | 39 | 38 |
| 2015 | 34 | 36 |
| 2016 | 30 | 37 |
| 2017 | 32 | 41 |
| 2018 | 43 | 39 |
| 2019 | 39 | 46 |
| 2020 | 27 | 39 |
| 2021 | 29 | 38 |
| 2022 | 33 | 29 |
| 2023 | 16 | 28 |
| 2024 | 19 | 37 |
| 2025 | 15 | 19 |
| 2026 | 20 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Drill and method of producing drilled product15 Sep 2026US 12,734,591 B2Subaru Corporation
- Spotter bit15 Sep 2026US 12,738,131 B2
- Cutting insert, rotary tool, and method for manufacturing machined product8 Sep 2026US 12,728,464 B2KYOCERA Corporation
- Drill8 Sep 2026US 12,728,465 B2Sumitomo Electric Hardmetal Corp.
- Multi-step drill with asymmetric step profiles1 Sep 2026US 12,722,211 B2
- Self-sharpening cutting device with gradually phased materials8 Oct 2026US 2026/0307157 A1
- Drill and method for manufacturing machined product1 Oct 2026US 2026/0295687 A1KYOCERA Corporation
- Drill24 Sep 2026US 2026/0284754 A1Medmetalex Co., Ltd.
- Drill3 Sep 2026US 2026/0257284 A1AB Sandvik Coromant
- Drill30 Jul 2026US 2026/0216797 A1Mitsubishi Materials Corporation
Most cited
By later US patents
- Drill bit point115US 5,273,380 A1993
- Surgical drill114US 4,830,000 AAspen Laboratories, Inc. · 1989
- Sintered diamond drill bits and method of making106US 5,443,337 A1995
- Two-piece rotary metal-cutting tool and method for interconnecting the pieces96US 5,988,953 ASeco Tools AB · 1999
- Sintered diamond drill bits and method of making96US 6,029,544 A2000