B24B 3/24
Sharpening cutting edges: of drills
Official title: of drills (by fluting the shank B24B19/04)
B24B3/24 (Sharpening cutting edges: of drills) appears on 202 US grants and 107 published applications in this corpus.
Search patents in B24B- Granted patents
- 202
- Published applications
- 107
- Assignees
- 71
- Inventors
- 256
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 6 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 7 | 0 |
| 1985 | 2 | 0 |
| 1986 | 6 | 0 |
| 1987 | 6 | 0 |
| 1988 | 6 | 0 |
| 1989 | 8 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 11 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 11 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 5 | 1 |
| 2002 | 1 | 4 |
| 2003 | 5 | 5 |
| 2004 | 5 | 6 |
| 2005 | 1 | 2 |
| 2006 | 6 | 8 |
| 2007 | 4 | 7 |
| 2008 | 4 | 3 |
| 2009 | 6 | 3 |
| 2010 | 3 | 3 |
| 2011 | 2 | 2 |
| 2012 | 1 | 3 |
| 2013 | 4 | 3 |
| 2014 | 3 | 2 |
| 2015 | 1 | 8 |
| 2016 | 5 | 8 |
| 2017 | 7 | 2 |
| 2018 | 3 | 7 |
| 2019 | 3 | 4 |
| 2020 | 2 | 3 |
| 2021 | 2 | 10 |
| 2022 | 2 | 6 |
| 2023 | 6 | 3 |
| 2024 | 8 | 2 |
| 2025 | 1 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Grinding tool for grinding buttons on a rock drill bit2 Jun 2026US 12,643,158 B2C.M.E. Blasting & Mining Equipment Ltd.
- Control system for grinding apparatus20 May 2025US 12,303,983 B2C.M.E. Blasting & Mining Equipment Ltd.
- Polycrystalline diamond compact cutting elements, methods of forming same and earth-boring tools17 Dec 2024US 12,168,281 B2Baker Hughes Oilfield Operations LLC
- Method for producing a cutting tool, and cutting tool3 Sep 2024US 12,076,026 B2Kennametal Inc.
- Drill and method for producing a drill20 Aug 2024US 12,064,819 B2Kennametal Inc.
- Drill, and method for producing a drill17 Jul 2025US 2025/0229342 A1
- Method for producing a cutting tool, and cutting tool6 Feb 2025US 2025/0048681 A1Kennametal Inc.
- Rotatable edge guide to support a cutting tool during a sharpening operation17 Oct 2024US 2024/0342848 A1Darex, LLC
- Rotary Tool and Method for Manufacturing Such a Rotary Tool1 Feb 2024US 2024/0033832 A1
- Handle apparatus for an industrial machine tool28 Dec 2023US 2023/0415241 A1JR Automation Technologies, LLC
Most cited
By later US patents
- Surface decarburization of a drill bit51US 5,609,447 ARogers Tool Works, Inc. · 1997
- Drill bit and method for grinding a drill bit38US 6,988,859 B2Kennametal Inc. · 2006
- Surface decarburization of a drill bit having a refined primary cutting edge36US 5,628,837 ARogers Tool Works, Inc. · 1997
- Twist drill29US 4,826,368 AHertel AG Werkzeuge & Hartstoffe · 1989
- Drill with groove width variation along the drill and double margin with a thinning section at the tip28US 7,306,411 B2Mitsubishi Materials Corporation · 2007