B21D 53/28
Gear wheels
Official title: gear wheels
B21D53/28 (Gear wheels) appears on 165 US grants and 100 published applications in this corpus.
Search patents in B21D- Granted patents
- 165
- Published applications
- 100
- Assignees
- 99
- Inventors
- 280
- Latest grant
- 22 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 5 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 7 | 0 |
| 1989 | 10 | 0 |
| 1990 | 5 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 9 | 0 |
| 1999 | 7 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 2 |
| 2002 | 2 | 2 |
| 2003 | 1 | 3 |
| 2004 | 5 | 4 |
| 2005 | 3 | 1 |
| 2006 | 2 | 3 |
| 2007 | 1 | 4 |
| 2008 | 1 | 3 |
| 2009 | 2 | 2 |
| 2010 | 1 | 5 |
| 2011 | 1 | 2 |
| 2012 | 6 | 7 |
| 2013 | 3 | 8 |
| 2014 | 6 | 4 |
| 2015 | 4 | 8 |
| 2016 | 4 | 8 |
| 2017 | 5 | 11 |
| 2018 | 3 | 8 |
| 2019 | 5 | 1 |
| 2020 | 6 | 4 |
| 2021 | 2 | 3 |
| 2022 | 5 | 3 |
| 2023 | 3 | 2 |
| 2024 | 2 | 1 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Boltless unitary ring gear-flange body22 Jul 2025US 12,366,288 B2NPC Robotics Corporation
- Method of forming a splined component4 Feb 2025US 12,214,400 B2MAGNA Powertrain AG & Co KG
- Apparatus and method for profiling workpieces by cold forming31 Dec 2024US 12,179,254 B2Ernst Grob AG
- Roll spinning forming device and method for toothed part31 Dec 2024US 12,179,255 B2South China University of Technology
- Sprocket for a bicycle drive train26 Sep 2023US 11,767,079 B2SRAM Deutschland GmbH
- Method of forming a splined component13 Mar 2025US 2025/0083210 A1MAGNA Powertrain AG & Co KG
- Gear23 May 2024US 2024/0167555 A1Miba Sinter Austria GmbH
- Boltless unitary ring gear-flange body26 Oct 2023US 2023/0341038 A1NPC Robotics Corporation
- Method of forming a splined component9 Feb 2023US 2023/0039866 A1MAGNA Powertrain AG & Co KG
- Powertrain drum and method of producing the same29 Dec 2022US 2022/0410248 A1
Most cited
By later US patents
- Laminated wheel assembly45US 4,630,498 ABriggs & Stratton Corporation · 1986
- Toothed wheel for use in automobiles and its manufacturing method42US 5,310,432 AKubota Iron Works Co., Ltd. · 1994
- Method for ironing spline teeth in pressed stepped sheetmetal and sheetmetal clutch drum formed by same33US 6,233,999 B1Unipres Corporation · 2001
- Gear tooth smoothing and shaping process31US 6,170,156 B2General Motors Corporation · 2001
- Cam mechanism for translation of circular motion into reciprocal motion30US 6,698,177 B1Delta Kogyo Co., Ltd. · 2004