B21K 5/04
Twisting-tools
Official title: twisting-tools, e.g. drills, reamers
B21K5/04 (Twisting-tools) appears on 33 US grants and 27 published applications in this corpus.
Search patents in B21K- Granted patents
- 33
- Published applications
- 27
- Assignees
- 20
- Inventors
- 67
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 1 | 2 |
| 2004 | 2 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 2 | 2 |
| 2015 | 1 | 3 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 2 |
| 2019 | 0 | 3 |
| 2020 | 1 | 0 |
| 2021 | 1 | 2 |
| 2022 | 0 | 3 |
| 2023 | 4 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Constant rake fluted drill bit and method of manufacture21 Apr 2026US 12,605,795 B1
- Constant rake fluted drill bit and method of manufacture18 Feb 2025US 12,226,861 B1
- Twisted helically shaped member12 Sep 2023US 11,752,540 B2Product Licensing Company Ltd
- Method and means of forming threaded ties and rods29 Aug 2023US 11,738,383 B2Product Licensing Company Ltd
- Method for producing a blank from extrusion material, and extruder23 May 2023US 11,654,465 B2Kennametal Inc.
- Forming tool, forming tool assembly, forming machine, forming method and computer program for producing a cylindrical workpiece having a helical outer contour by means of swaging16 Jul 2026US 2026/0199959 A1FELSS Systems GmbH
- Twisted helically shaped member29 Dec 2022US 2022/0410250 A1Product Licensing Company Ltd
- Pcd drill and manufacturing method for same29 Dec 2022US 2022/0410286 A1Honda Motor Co., Ltd.
- Method & means of forming threaded ties and rods15 Sep 2022US 2022/0288669 A1Product Licensing Company Ltd
- Pcd drill and manufacturing method for same16 Sep 2021US 2021/0283695 A1Honda Motor Co., Ltd.
Most cited
By later US patents
- Bit manufacturing method135US 6,073,518 ABaker Hughes Incorporated · 2000
- Structure for use in drilling a subterranean formation123US 6,089,123 ABaker Hughes Incorporated · 2000
- Methods for manufacturing endodontic instruments by milling64US 7,322,105 B2Ultradent Products, Inc. · 2008
- Extrusion tool for producing hard-metal or ceramic drill blank46US 4,779,440 AFried. Krupp Gesellschaft mit beschraenkter Haftung · 1988
- Barbed endodontic instrument29US 6,428,317 B1Abelity, LLC · 2002