B23B 2251/082
Curved cutting edges
B23B2251/082 (Curved cutting edges) appears on 59 US grants and 80 published applications in this corpus.
Search patents in B23B- Granted patents
- 59
- Published applications
- 80
- Assignees
- 42
- Inventors
- 123
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 0 | 1 |
| 2003 | 0 | 2 |
| 2004 | 1 | 0 |
| 2005 | 2 | 2 |
| 2006 | 2 | 3 |
| 2007 | 2 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 4 |
| 2011 | 3 | 5 |
| 2012 | 2 | 5 |
| 2013 | 2 | 0 |
| 2014 | 4 | 3 |
| 2015 | 5 | 5 |
| 2016 | 3 | 4 |
| 2017 | 3 | 3 |
| 2018 | 3 | 6 |
| 2019 | 4 | 5 |
| 2020 | 2 | 5 |
| 2021 | 4 | 7 |
| 2022 | 5 | 5 |
| 2023 | 1 | 3 |
| 2024 | 4 | 5 |
| 2025 | 4 | 2 |
| 2026 | 1 | 2 |
By publication year. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Drill20 Jan 2026US 12,528,128 B2Sumitomo Electric Hardmetal Corp.
- Non planar cutting element with non planar interface design and tools incorporating such elements30 Sep 2025US 12,428,914 B2Schlumberger Technology Corporation
- Cutting head having tip portion with radially extending front cutting edges provided with both negative and positive rake angles, and rotary cutting tool17 Jun 2025US 12,330,224 B2Iscar, Ltd.
- Drill18 Mar 2025US 12,251,765 B2Sumitomo Electric Hardmetal Corp.
- Drill and method of producing drilled product21 Jan 2025US 12,202,057 B2Subaru Corporation
- Drill30 Jul 2026US 2026/0216797 A1Mitsubishi Materials Corporation
- Cutting element with non-planar interface design and tools incorporating such elements22 Jan 2026US 2026/0022613 A1Schlumberger Technology Corporation
- Flat drill27 Nov 2025US 2025/0360572 A1Gühring KG
- Drill and method of manufacturing machined product3 Jul 2025US 2025/0214155 A1KYOCERA Corporation
- Drill24 Oct 2024US 2024/0351118 A1Nachi-Fujikoshi Corp.
Most cited
By later US patents
- Carbide drill bit for composite materials32US 7,665,935 B1Precorp, Inc. · 2010
- Indexable type cutting tool28US 7,997,836 B2Korloy Inc. · 2011
- Spade bits with angled sides27US 6,957,937 B2Maxtech Manufacturing Inc. · 2005
- Damaged bolt and screw removing devices26US 8,215,206 B2Combined Products Co. #1 Inc. · 2012
- Drill24US 6,916,139 B2Mitsubishi Materials Corporation · 2005