B23F 21/04
Planing or slotting tools
B23F21/04 (Planing or slotting tools) appears on 55 US grants and 54 published applications in this corpus.
Search patents in B23F- Granted patents
- 55
- Published applications
- 54
- Assignees
- 38
- Inventors
- 116
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 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 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 4 |
| 2015 | 2 | 6 |
| 2016 | 3 | 6 |
| 2017 | 4 | 5 |
| 2018 | 6 | 6 |
| 2019 | 6 | 7 |
| 2020 | 5 | 4 |
| 2021 | 3 | 0 |
| 2022 | 2 | 5 |
| 2023 | 0 | 4 |
| 2024 | 1 | 3 |
| 2025 | 3 | 1 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Near zero degrees cross-axis angle gear cutter and method of gear cutting using such a tool14 Jul 2026US 12,678,873 B2Eaton Intelligent Power Limited
- 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
- Aeronautical component machining21 Oct 2025US 12,447,540 B2GKN Aerospace Sweden AB
- Coating film, tool, and machine tool9 Sep 2025US 12,410,505 B2Nidec Machine Tool Corporation
- Peeling wheel and method for manufacturing a toothing on a gear wheel by skiving15 Jul 2025US 12,358,063 B2Präwema Antriebstechnik GmbH
- Skiving tool and method for machining tooth flanks of teeth17 Jul 2025US 2025/0229350 A1Reishauer AG
- Method for designing cylindrical skiving tool without geometric relief angle26 Dec 2024US 2024/0424585 A1Jiangsu University
- Method for Producing Tooth Flank Modifications on Tooth Flanks of a Workpiece Toothing of a Workpiece28 Mar 2024US 2024/0100612 A1Präwema Antriebstechnik GmbH
- Peeling Wheel and Method for Manufacturing a Toothing on a Gear Wheel by Skiving29 Feb 2024US 2024/0066616 A1Präwema Antriebstechnik GmbH
- Near zero degrees cross-axis angle gear cutter and method of gear cutting using such a tool14 Dec 2023US 2023/0398619 A1Eaton Intelligent Power Limited
Most cited
By later US patents
- Disposable disk cutter13US 4,784,538 AFellows Corporation · 1988
- Skiving tool comprising cutter bars12US 8,950,301 B2Klingelnberg GmbH · 2015
- Tool and a cutting insert for power skiving12US 9,981,330 B2Sandvik Intellectual Property AB · 2018
- Shaper cutter10US 4,576,527 ABarber-Colman Company · 1986
- Disposable disk cutter10US 4,629,377 AFellows Corporation · 1986