B23F 21/28
Shaving cutters
B23F21/28 (Shaving cutters) appears on 25 US grants and 8 published applications in this corpus.
Search patents in B23F- Granted patents
- 25
- Published applications
- 8
- Assignees
- 19
- Inventors
- 41
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 2 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for producing or machining, by cutting, an identical set of teeth on each of a plurality of workpieces, and machine group and control program therefor17 Feb 2026US 12,551,958 B2Gleason-Pfauter Maschinenfabrik GmbH
- Tool for cutting teeth or for dressing of a fine machining tool having a set of external teeth28 May 2024US 11,992,888 B2Präwema Antriebstechnik GmbH
- Gear edge cut-off tool and gear edge cut-off device17 Apr 2018US 9,943,917 B2Kreuz Co., Ltd.
- Gear machining apparatus10 Jan 2017US 9,539,659 B2Jtekt Corporation
- Tooth-profile management system for shaving-cutter grinding machine29 Jul 2014US 8,790,156 B2Mitsubishi Heavy Industries, Ltd.
- Tool, gear machining apparatus, and method of machining gear25 Jun 2026US 2026/0175307 A1Jtekt Gear Systems Corporation
- Method for producing or machining, by cutting, an identical set of teeth on each of a plurality of workpieces, and machine group and control program therefor20 Oct 2022US 2022/0331893 A1Gleason-Pfauter Maschinenfabrik GmbH
- Skiving Tool and Method for Skiving Processing a Gear Wheel Blank6 Oct 2022US 2022/0314349 A1Präwema Antriebstechnik GmbH
- Tool for Cutting Teeth or for Dressing of a Fine Machining Tool Having a Set of External Teeth13 Feb 2020US 2020/0047269 A1Präwema Antriebstechnik GmbH
- Gear edge cut-off tool and gear edge cut-off device14 Sep 2017US 2017/0259360 A1Kreuz Co., Ltd.
Most cited
By later US patents
- Coating composition and method18US 4,645,715 AEnergy Conversion Devices, Inc. · 1987
- Apparatus for machining a spur gear by means of a rotating gearlike tool13US 4,635,404 AReishauer AG · 1987
- Disposable disk cutter13US 4,784,538 AFellows Corporation · 1988
- Process for machining a spur gear by means of a rotating gear-like tool12US 4,559,744 AReishauer AG · 1985
- High production serrator10US 4,426,893 ALear Siegler, Inc. · 1984