B24B 3/26
Of the point of twist drills
Official title: of the point of twist drills
B24B3/26 (Of the point of twist drills) appears on 112 US grants and 43 published applications in this corpus.
Search patents in B24B- Granted patents
- 112
- Published applications
- 43
- Assignees
- 38
- Inventors
- 129
- Latest grant
- 3 Sep 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 8 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 7 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 1 |
| 2002 | 1 | 2 |
| 2003 | 3 | 1 |
| 2004 | 2 | 0 |
| 2005 | 0 | 0 |
| 2006 | 2 | 2 |
| 2007 | 2 | 3 |
| 2008 | 1 | 1 |
| 2009 | 4 | 1 |
| 2010 | 1 | 0 |
| 2011 | 2 | 1 |
| 2012 | 0 | 2 |
| 2013 | 2 | 2 |
| 2014 | 1 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 3 |
| 2017 | 2 | 0 |
| 2018 | 2 | 4 |
| 2019 | 1 | 2 |
| 2020 | 1 | 0 |
| 2021 | 2 | 10 |
| 2022 | 1 | 2 |
| 2023 | 6 | 2 |
| 2024 | 4 | 1 |
| 2025 | 0 | 2 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- 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.
- Handle apparatus for an industrial machine tool6 Aug 2024US 12,053,828 B2JR Automation Technologies, LLC
- High speed drill bit sharpener2 Apr 2024US 11,945,072 B1
- Drill system, an upper drill tool and a lower drill tool for precision forming of openings in a bracket, and methods of use5 Dec 2023US 11,833,592 B2JR Automation Technologies, LLC
- 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.
- 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
- Drill and method for producing a drill13 Jul 2023US 2023/0219147 A1Kennametal Inc.
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
- Precision twist drill sharpener/point splitting machine26US 5,400,546 ADarex, LLC · 1995