B23B 2251/00
Details of tools for drilling machines
B23B2251/00 (Details of tools for drilling machines) appears on 1,432 US grants and 1,373 published applications in this corpus.
Search patents in B23B- Granted patents
- 1,432
- Published applications
- 1,373
- Assignees
- 501
- Inventors
- 2,093
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 8 | 0 |
| 1978 | 16 | 0 |
| 1979 | 7 | 0 |
| 1980 | 12 | 0 |
| 1981 | 7 | 0 |
| 1982 | 8 | 0 |
| 1983 | 7 | 0 |
| 1984 | 9 | 0 |
| 1985 | 13 | 0 |
| 1986 | 18 | 0 |
| 1987 | 14 | 0 |
| 1988 | 16 | 0 |
| 1989 | 20 | 0 |
| 1990 | 17 | 0 |
| 1991 | 20 | 0 |
| 1992 | 21 | 0 |
| 1993 | 20 | 0 |
| 1994 | 18 | 0 |
| 1995 | 15 | 0 |
| 1996 | 6 | 0 |
| 1997 | 27 | 0 |
| 1998 | 25 | 0 |
| 1999 | 35 | 0 |
| 2000 | 33 | 0 |
| 2001 | 32 | 19 |
| 2002 | 19 | 33 |
| 2003 | 31 | 42 |
| 2004 | 22 | 39 |
| 2005 | 21 | 44 |
| 2006 | 35 | 48 |
| 2007 | 29 | 48 |
| 2008 | 29 | 45 |
| 2009 | 37 | 50 |
| 2010 | 23 | 75 |
| 2011 | 23 | 44 |
| 2012 | 31 | 67 |
| 2013 | 43 | 48 |
| 2014 | 53 | 54 |
| 2015 | 51 | 74 |
| 2016 | 49 | 69 |
| 2017 | 77 | 72 |
| 2018 | 73 | 64 |
| 2019 | 68 | 90 |
| 2020 | 51 | 67 |
| 2021 | 54 | 81 |
| 2022 | 53 | 46 |
| 2023 | 39 | 49 |
| 2024 | 37 | 53 |
| 2025 | 21 | 29 |
| 2026 | 28 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B23B 2251/50Drilling tools comprising cutting insertsIndexing code346
- B23B 2251/14Configuration of the cutting part, i.e. the main cutting edgesIndexing code345
- B23B 2251/02Connections between shanks and removable cutting headsIndexing code298
- B23B 2251/40Flutes, i.e. chip conveying groovesIndexing code270
- B23B 2251/18Configuration of the drill pointIndexing code260
- B23B 2251/04AnglesIndexing code241
- B23B 2251/24Overall form of drilling toolsIndexing code169
- B23B 2251/20Number of cutting edgesIndexing code150
All 26 subgroupsShow fewer
- B23B 2251/08Side or plan views of cutting edgesIndexing code113
- B23B 2251/48Chip breakersIndexing code107
- B23B 2251/44Margins, i.e. the narrow portion of the land which is not cutIndexing code78
- B23B 2251/60Drills with pilotsIndexing code77
- B23B 2251/56Guiding padsIndexing code72
- B23B 2251/28Arrangement of teethIndexing code57
- B23B 2251/12Cross sectional views of the cutting edgesIndexing code42
- B23B 2251/68Drills with provision for suctionIndexing code36
- B23B 2251/46Drills having a centre free from cutting edges or with recessed cuttingIndexing code26
- B23B 2251/70Drills with vibration suppressing meansIndexing code26
- B23B 2251/52Depth indicatorsIndexing code13
- B23B 2251/64Drills operating in the reverse direction, i.e. in the unscrewing direction ofIndexing code11
- B23B 2251/66Drills with provision to be used as a screwdriverIndexing code8
- B23B 2251/62Drilling tools having means to reinforce the shankIndexing code6
- B23B 2251/58Guiding rollsIndexing code4
- B23B 2251/74Drills for drilling a flat bottomed holeIndexing code1
- B23B 2251/16New cutting edge by fracture, wear, or recyclingIndexing code0
- B23B 2251/51Drills with means for feeding cableIndexing code0
Recent patents
- Drill and method of producing drilled product15 Sep 2026US 12,734,591 B2Subaru Corporation
- 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.
- Drill8 Sep 2026US 12,728,467 B2Osg Corporation
- Multi-step drill with asymmetric step profiles1 Sep 2026US 12,722,211 B2
- Step drill bits8 Oct 2026US 2026/0307156 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
- Veined tool blank and drill20 Aug 2026US 2026/0241498 A1AB Sandvik Coromant
Most cited
By later US patents
- Manual tool for removing material from brittle and/or non-ductile stock416US 5,733,074 AHilti Aktiengesellschaft · 1998
- Sintered and forged article, and method of forming same145US 4,484,644 AIngersoll-Rand Company · 1984
- Drill bit point115US 5,273,380 A1993
- Surgical drill114US 4,830,000 AAspen Laboratories, Inc. · 1989
- Tubular hole cutter112US 6,786,684 B12004