B23B 2251/204
Four cutting edges
B23B2251/204 (Four cutting edges) appears on 56 US grants and 61 published applications in this corpus.
Search patents in B23B- Granted patents
- 56
- Published applications
- 61
- Assignees
- 38
- Inventors
- 128
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 3 |
| 2002 | 2 | 1 |
| 2003 | 1 | 3 |
| 2004 | 0 | 0 |
| 2005 | 3 | 3 |
| 2006 | 0 | 0 |
| 2007 | 1 | 3 |
| 2008 | 1 | 5 |
| 2009 | 5 | 1 |
| 2010 | 0 | 6 |
| 2011 | 2 | 0 |
| 2012 | 2 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 4 |
| 2016 | 3 | 3 |
| 2017 | 4 | 5 |
| 2018 | 1 | 1 |
| 2019 | 6 | 3 |
| 2020 | 0 | 3 |
| 2021 | 2 | 4 |
| 2022 | 3 | 5 |
| 2023 | 2 | 1 |
| 2024 | 3 | 4 |
| 2025 | 2 | 0 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rotary tool and method for manufacturing machined product7 Apr 2026US 12,594,611 B2KYOCERA Corporation
- One-piece cutting head for a drill bit17 Feb 2026US 12,551,954 B2Black & Decker Inc.
- Drill8 Jul 2025US 12,350,744 B2Sumitomo Electric Hardmetal Corp.
- Drill for carbon-fiber composite material29 Apr 2025US 12,285,810 B2Bic Tool Co., Ltd.
- Cutting tool10 Sep 2024US 12,083,605 B2Tungaloy Corporation
- Two-flute deep-hole drill for stainless steels and other high-alloy steel materials2 Jul 2026US 2026/0183850 A1botek Präzisionsbohrtechnik GmbH
- Masonry drill head7 May 2026US 2026/0124787 A1Ceratizit Hard Material Solutions S.A R.L.
- Cutting Head Having Two Pairs of Cutting Arms with Unequal Cutting Diameters, and Rotary Cutting Tool28 Nov 2024US 2024/0390991 A1Iscar, Ltd.
- Drilling tool14 Nov 2024US 2024/0375192 A1Milwaukee Electric Tool Corporation
- Drill24 Oct 2024US 2024/0351118 A1Nachi-Fujikoshi Corp.
Most cited
By later US patents