B23F 9/00
Making gears having teeth curved in their longitudinal direction
B23F9/00 (Making gears having teeth curved in their longitudinal direction) appears on 126 US grants and 105 published applications in this corpus.
Search patents in B23F- Granted patents
- 126
- Published applications
- 105
- Assignees
- 59
- Inventors
- 216
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 2 |
| 2003 | 3 | 3 |
| 2004 | 1 | 1 |
| 2005 | 0 | 5 |
| 2006 | 1 | 3 |
| 2007 | 4 | 5 |
| 2008 | 4 | 3 |
| 2009 | 1 | 5 |
| 2010 | 1 | 2 |
| 2011 | 3 | 4 |
| 2012 | 3 | 5 |
| 2013 | 1 | 10 |
| 2014 | 3 | 3 |
| 2015 | 12 | 4 |
| 2016 | 2 | 9 |
| 2017 | 6 | 5 |
| 2018 | 4 | 5 |
| 2019 | 6 | 7 |
| 2020 | 6 | 9 |
| 2021 | 4 | 5 |
| 2022 | 8 | 6 |
| 2023 | 1 | 1 |
| 2024 | 4 | 1 |
| 2025 | 1 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B23F 9/08Making gears having teeth curved in their longitudinal direction: by milling77
- B23F 9/02Making gears having teeth curved in their longitudinal direction: by grinding57
- B23F 9/04Making gears having teeth curved in their longitudinal direction: by planing or4
- B23F 9/003Making gears having teeth curved in their longitudinal direction: by broaching0
Recent patents
- Roller taper grinding method for planetary roller screw mechanism28 Jul 2026US 12,691,546 B2Chongqing University
- Gearbox9 Jun 2026US 12,650,157 B2Wittenstein AG
- Method for manufacturing sintered gear18 Feb 2025US 12,226,860 B2Sumitomo Electric Industries, Ltd.
- Method of manufacturing a toothed bevel honing tool for honing a toothed bevel workpiece, a toothed bevel honing tool and method of honing bevel gears24 Sep 2024US 12,097,566 B2The Gleason Works
- Method for manufacturing hypoid gear25 Jun 2024US 12,017,292 B2Mazda Motor Corporation
- Gearbox23 Oct 2025US 2025/0327509 A1Wittenstein AG
- Apparatus For Loading And Unloading A Machine Tool For Machining Toothing Systems27 Mar 2025US 2025/0100096 A1Reishauer AG
- Roller taper grinding method for planetary roller screw mechanism25 Apr 2024US 2024/0131650 A1Chongqing University
- Gearwheel, method for producing a gearwheel, and method for measuring a gearwheel30 Nov 2023US 2023/0383832 A1Klingelnberg GmbH
- Tooling and method for fabricating helical sector gear and related helical sector gear29 Dec 2022US 2022/0412444 A1American Axle & Manufacturing, Inc.
Most cited
By later US patents
- Multi-axis bevel and hypoid gear generating machine65US 4,981,402 AThe Gleason Works · 1991
- Method of generating bevel and hypoid gears34US 5,116,173 AThe Gleason Works · 1992
- Method of generating involute tooth forms with a milling cutter33US 4,565,474 AThe Ingersoll Milling Machine Company · 1986
- Machine tool chip removal system31US 5,586,848 AThe Gleason Works · 1996
- Method of machining during indexing31US 5,800,103 AThe Gleason Works · 1998