B23F 5/22
The tool being a hob for making spur gears
Official title: the tool being a hob for making spur gears
B23F5/22 (The tool being a hob for making spur gears) appears on 63 US grants and 52 published applications in this corpus.
Search patents in B23F- Granted patents
- 63
- Published applications
- 52
- Assignees
- 53
- Inventors
- 124
- Latest grant
- 23 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 2 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 3 |
| 2013 | 0 | 6 |
| 2014 | 0 | 5 |
| 2015 | 4 | 3 |
| 2016 | 8 | 6 |
| 2017 | 2 | 7 |
| 2018 | 10 | 3 |
| 2019 | 2 | 1 |
| 2020 | 2 | 3 |
| 2021 | 3 | 4 |
| 2022 | 3 | 2 |
| 2023 | 2 | 1 |
| 2024 | 3 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of forming spline gears and assembling a dual spline gear23 Sep 2025US 12,420,347 B1Prince Mohammad Bin Fahd University
- Worm gear machine19 Nov 2024US 12,145,208 B2Chongqing University
- Power transmission shaft and method for manufacturing the same1 Oct 2024US 12,104,652 B2Hitachi Astemo, Ltd.
- Method for machining the tip circle diameter and a tool for producing a gearwheel9 Jul 2024US 12,030,130 B2Präwema Antriebstechnik GmbH
- Gear machining apparatus and machining condition determination device3 Oct 2023US 11,772,175 B2Jtekt Corporation
- Gear part machining method, non-transitory computer-readable recording medium, and machining apparatus16 Jul 2026US 2026/0199993 A1Yamazaki Mazak Corporation
- Machine and process for forming an axle shaft19 Dec 2024US 2024/0416442 A1Federal Screw Works
- Gear material, and production method and finishing method therefor27 Jul 2023US 2023/0234121 A1Gohsyu Corporation
- Worm gear machine13 Oct 2022US 2022/0324043 A1Chongqing University
- Gear machining apparatus and machining condition determination device13 Jan 2022US 2022/0009016 A1Jtekt Corporation
Most cited
By later US patents
- Gear hobbing machine16US 5,228,814 AThe Gleason Works · 1993
- Method and apparatus for the synchronization of a gear machining apparatus14US 4,253,050 AReishauer AG · 1981
- System for the production of an additional rotational motion of a helically toothed gear workpiece in a positively controlled gear processing machine9US 4,178,537 AReishauer AG · 1979
- Carbide hobbing machine4US 4,111,098 A1978
- Device for positioning a tool carriage4US 4,245,938 ACarl Hurth Maschinen- und Zahnradfabrik GmbH & Co. · 1981