B23B 2251/085
Discontinuous or interrupted cutting edges
B23B2251/085 (Discontinuous or interrupted cutting edges) appears on 43 US grants and 67 published applications in this corpus.
Search patents in B23B- Granted patents
- 43
- Published applications
- 67
- Assignees
- 43
- Inventors
- 123
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 2 |
| 2006 | 2 | 2 |
| 2007 | 2 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 3 |
| 2011 | 0 | 3 |
| 2012 | 0 | 4 |
| 2013 | 1 | 2 |
| 2014 | 4 | 4 |
| 2015 | 5 | 2 |
| 2016 | 3 | 4 |
| 2017 | 3 | 2 |
| 2018 | 1 | 1 |
| 2019 | 2 | 3 |
| 2020 | 2 | 5 |
| 2021 | 3 | 5 |
| 2022 | 2 | 4 |
| 2023 | 1 | 5 |
| 2024 | 4 | 6 |
| 2025 | 3 | 3 |
| 2026 | 3 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Cutting insert, rotary tool, and method for manufacturing machined product8 Sep 2026US 12,728,464 B2KYOCERA Corporation
- Micro-reinforced concentric twist drill1 Sep 2026US 12,722,213 B2Shandong Old Roughneck Machinery Technology Co. Ltd
- Drill17 Mar 2026US 12,576,452 B2Mitsubishi Materials 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.
- Twist drill with long life and easy cutting1 Jan 2026US 2026/0001147 A1Danyang Jianlu Tools Co., Ltd.
- Spade drill blade and combined blade12 Jun 2025US 2025/0187085 A1
- Drill bit tip and drill with drill bit tip, mold and method for manufacturing drill bit tip17 Apr 2025US 2025/0121441 A1Drill Holding ApS
- Rotary Tool and Method for Manufacturing Such a Rotary Tool16 Jan 2025US 2025/0018480 A1
- Step drill bit and method for drilling a workpiece by using a step drill bit14 Nov 2024US 2024/0375190 A1
Most cited
By later US patents
- Drill bit for drilling rock43US 6,702,047 B2Ceratizit Austria Gesellschaft m. b. H. · 2004
- Spade drill insert having curved cutting edges21US 7,018,145 B2Allied Machine & Engineering Corp. · 2006
- Drill insert having curved cutting edges20US 7,241,089 B2Allied Machine & Engineering Corp. · 2007
- Drill9US 8,579,557 B2Bic Tool Co., Ltd. · 2013
- Deep hole drill7US 7,296,953 B2Joerg GUEHRING · 2007