B21D 53/16
Rings
Official title: rings, e.g. barrel hoops
B21D53/16 (Rings) appears on 202 US grants and 142 published applications in this corpus.
Search patents in B21D- Granted patents
- 202
- Published applications
- 142
- Assignees
- 152
- Inventors
- 374
- Latest grant
- 9 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 8 | 0 |
| 1978 | 9 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 10 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 7 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 2 |
| 2003 | 5 | 1 |
| 2004 | 1 | 2 |
| 2005 | 3 | 3 |
| 2006 | 2 | 3 |
| 2007 | 2 | 2 |
| 2008 | 1 | 7 |
| 2009 | 5 | 12 |
| 2010 | 1 | 8 |
| 2011 | 1 | 4 |
| 2012 | 7 | 7 |
| 2013 | 1 | 5 |
| 2014 | 3 | 4 |
| 2015 | 4 | 7 |
| 2016 | 3 | 5 |
| 2017 | 6 | 10 |
| 2018 | 4 | 15 |
| 2019 | 8 | 15 |
| 2020 | 10 | 8 |
| 2021 | 8 | 2 |
| 2022 | 5 | 3 |
| 2023 | 2 | 7 |
| 2024 | 8 | 3 |
| 2025 | 4 | 5 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for manufacturing ring member for bearing, and mold for inversion working9 Sep 2025US 12,409,487 B2
- Method for manufacturing bearing ring member9 Sep 2025US 12,409,488 B2
- Self-controllable load spring washer15 Apr 2025US 12,274,862 B2Becton, Dickinson and Company
- System and method for contouring ring component25 Feb 2025US 12,233,452 B2ROLLS-ROYCE plc
- Slew-actuated piercing of radial wall15 Oct 2024US 12,115,572 B2Inno-Spin LLC
- Packing material cartridge28 May 2026US 2026/0146681 A1A. W. Chesterton Company
- Self-Controllable Load Spring Washer26 Jun 2025US 2025/0205428 A1Becton, Dickinson and Company
- Method for manufacturing metal component arranged inflow path for high temperature fluid10 Apr 2025US 2025/0116221 A1Futaba Industrial Co., Ltd.
- Terminal part for a secondary cell20 Feb 2025US 2025/0062506 A1Northvolt AB
- Method for manufacturing ring member for bearing, and mold for inversion working9 Jan 2025US 2025/0010355 A1Nsk Ltd.
Most cited
By later US patents
- Releasable coupling device74US 4,508,369 ANycoil Company · 1985
- Method for manufacturing metal cylinder members of electron tubes and method for manufacturing magnetron anodes50US 5,096,449 AKabushiki Kaisha Toshiba · 1992
- Releasable coupling device43US 4,440,424 ANycoil Company · 1984
- Method of producing semicircular washers having a projection to prevent rotation42US 4,310,939 ADaido Metal Company Ltd. · 1982
- Friction ring for clutches or brakes, and a method and device for producing the friction ring35US 4,770,283 AHoerbiger & Co. · 1988