B23B 2251/248
Drills in which the outer surface is of special form
B23B2251/248 (Drills in which the outer surface is of special form) appears on 18 US grants and 26 published applications in this corpus.
Search patents in B23B- Granted patents
- 18
- Published applications
- 26
- Assignees
- 23
- Inventors
- 53
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 2 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 2 | 2 |
| 2015 | 0 | 2 |
| 2016 | 3 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 2 |
| 2019 | 0 | 3 |
| 2020 | 1 | 0 |
| 2021 | 1 | 3 |
| 2022 | 0 | 1 |
| 2023 | 1 | 1 |
| 2024 | 2 | 2 |
| 2025 | 1 | 0 |
| 2026 | 2 | 0 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Micro-reinforced concentric twist drill1 Sep 2026US 12,722,213 B2Shandong Old Roughneck Machinery Technology Co. Ltd
- Insert holder having weight-reducing voids and cutting tool21 Jul 2026US 12,686,064 B2Iscar, Ltd.
- Drill8 Jul 2025US 12,350,744 B2Sumitomo Electric Hardmetal Corp.
- Helical tunneling and fixation device21 May 2024US 11,986,889 B1Medical Device Development Corporation, Inc.
- Deep-hole drill having a plurality of chip-forming devices and recesses in the rake face30 Apr 2024US 11,969,804 B2botek Präzisionsbohrtechnik GmbH
- Micro-reinforced concentric twist drill22 Aug 2024US 2024/0278336 A1Shandong Old Roughneck Machinery Technology Co. Ltd
- Helical Tunneling and Fixation Device2 May 2024US 2024/0139834 A1Medical Device Development Corporation, Inc.
- Insert holder having weight-reducing voids and cutting tool15 Jun 2023US 2023/0182212 A1Iscar, Ltd.
- Drill15 Sep 2022US 2022/0288699 A1Sumitomo Electric Hardmetal Corp.
- Male fastener extractor device16 Sep 2021US 2021/0283755 A1
Most cited
By later US patents
- Rotatable tool for chip removing machining31US 7,114,892 B2Sandvik Intellectual Property AB · 2006
- Cutting tool and processing method by the same13US 8,052,355 B2Denso Corporation · 2011
- Spade bit11US 7,246,976 B2Textron Innovations Inc. · 2007
- Rotary tool, in particular a drill9US 8,834,080 B2Kennametal Inc. · 2014
- Small-diameter deep hole drill and a micro deep hole drilling method6US 7,909,549 B2Hitachi Tool Engineering, Ltd. · 2011