B23B 2251/282
Unequal spacing of cutting edges in the circumferential direction
B23B2251/282 (Unequal spacing of cutting edges in the circumferential direction) appears on 23 US grants and 25 published applications in this corpus.
Search patents in B23B- Granted patents
- 23
- Published applications
- 25
- Assignees
- 19
- Inventors
- 48
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 4 |
| 2011 | 0 | 2 |
| 2012 | 2 | 3 |
| 2013 | 1 | 1 |
| 2014 | 3 | 1 |
| 2015 | 2 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 2 |
| 2018 | 2 | 2 |
| 2019 | 3 | 2 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multi-step drill with asymmetric step profiles1 Sep 2026US 12,722,211 B2
- Rotary cutting tool having chip space in proportion to feed-per-tooth17 Jan 2023US 11,554,426 B2Yg-1 Co., Ltd.
- Rotary tool and method for manufacturing machined product28 Jun 2022US 11,370,040 B2KYOCERA Corporation
- Cutting tool holder, cutting tool, and method of manufacturing machined product5 Oct 2021US 11,135,659 B2KYOCERA Corporation
- Step drill25 Jun 2019US 10,328,499 B2Black & Decker Inc.
- Multi-step drill with asymmetric step profiles12 Mar 2026US 2026/0070132 A1
- Multi-step drill with asymmetric step profiles21 Aug 2025US 2025/0262676 A1
- Rotary cutting tool having chip space in proportion to feed-per-tooth28 Oct 2021US 2021/0331257 A1Yg-1 Co., Ltd.
- Rotary tool and method for manufacturing machined product5 Dec 2019US 2019/0366449 A1KYOCERA Corporation
- Step bit31 Jan 2019US 2019/0030620 A1Greenlee Textron Inc.
Most cited
By later US patents