B23F 23/1293
Workpiece heads
Official title: {Workpiece heads}
B23F23/1293 (Workpiece heads) appears on 33 US grants and 14 published applications in this corpus.
Search patents in B23F- Granted patents
- 33
- Published applications
- 14
- Assignees
- 27
- Inventors
- 72
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 3 |
| 2020 | 0 | 0 |
| 2021 | 2 | 2 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process of grinding and polishing gear wheels17 Feb 2026US 12,551,957 B23M Innovative Properties Company
- Method and apparatus for loading and positioning a workpiece on a gear manufacturing machine20 Feb 2024US 11,904,396 B2The Gleason Works
- Oversized part hold down apparatus4 Oct 2022US 11,458,580 B2Engineered Abrasives, Inc.
- Oversized part hold down apparatus29 Jun 2021US 11,045,915 B2Engineered Abrasives, Inc.
- Tool electrode for and methods of electrical discharge machining23 Mar 2021US 10,953,483 B2General Electric Company
- Process of grinding and polishing gear wheels11 Jun 2026US 2026/0158572 A13M Innovative Properties Company
- Vibration-assisted generating machining12 Jun 2025US 2025/0187091 A1Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Process of grinding and polishing gear wheels7 Sep 2023US 2023/0278120 A13M Innovative Properties Company
- Method and apparatus for loading and positioning a workpiece on a gear manufacturing machine7 Oct 2021US 2021/0308780 A1The Gleason Works
- Oversized part hold down apparatus15 Apr 2021US 2021/0107105 A1Engineered Abrasives, Inc.
Most cited
By later US patents
- Apparatus and method for machining a gear shape21US 5,539,172 AToyota Jidosha Kabushiki Kaisha · 1996
- Method and apparatus for grinding the tooth flanks of internally-toothed gear wheels19US 4,058,938 AFurstlich Hohenzollernsche Huttenverwaltung Laucherthal · 1977
- Gear teeth rotary-shaving or roll-finishing machine7US 4,212,572 ARenault Industries Equipments et Techniques-Riet · 1980
- System for generating a tooth profile used in a differential speed reduction apparatus7US 5,022,802 AKabushiki Kaisha Shinkoseisakusho · 1991
- Hobbing machine7US 5,813,806 AHermann Pfauter GmbH & Co. · 1998