B21K 1/761
Rings
Official title: {rings}
B21K1/761 (Rings) appears on 48 US grants and 38 published applications in this corpus.
Search patents in B21K- Granted patents
- 48
- Published applications
- 38
- Assignees
- 35
- Inventors
- 125
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 1 | 6 |
| 2011 | 2 | 4 |
| 2012 | 2 | 3 |
| 2013 | 1 | 1 |
| 2014 | 1 | 1 |
| 2015 | 2 | 0 |
| 2016 | 0 | 3 |
| 2017 | 3 | 5 |
| 2018 | 1 | 1 |
| 2019 | 2 | 1 |
| 2020 | 1 | 3 |
| 2021 | 3 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 2 |
| 2024 | 0 | 0 |
| 2025 | 0 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Processes for making metal rings formed from beryllium-copper alloys24 Feb 2026US 12,559,827 B2Materion Corporation
- Beryllium copper alloy ring and method for producing same5 Sep 2023US 11,746,404 B2NGK Insulators, Ltd.
- Ring molded article manufacturing method and ring material28 Dec 2021US 11,208,910 B2Hitachi Metals, Ltd.
- Method for manufacturing outer ring of constant velocity joint15 Jun 2021US 11,033,953 B2Jtekt Corporation
- Method for producing a synchronizer ring and associated synchronizer ring18 May 2021US 11,009,082 B2Diehl Metall Stiftung & Co. KG
- Method and Forming Device for Producing Ring-Shaped Formed Parts11 Dec 2025US 2025/0375810 A1Hatebur Umformmaschinen AG
- Tapered material manufacturing method10 Apr 2025US 2025/0114839 A1Proterial, Ltd.
- Washer and method for manufacturing the same25 May 2023US 2023/0158561 A1
- Metal rings formed from beryllium-copper alloys18 May 2023US 2023/0151474 A1Materion Corporation
- Beryllium copper alloy ring and method for producing same30 Sep 2021US 2021/0301384 A1NGK Insulators, Ltd.
Most cited
By later US patents
- Process for fabricating multi-alloy components80US 4,529,452 AUnited Technologies Corporation · 1985
- Method and system for warm or hot high-velocity die forging32US 5,894,752 ASanyo Special Steel Co., Ltd. · 1999
- Method for producing near net ring gear forgings16US 4,856,167 AEaton Corporation · 1989
- Method for id sizing of filament reinforced annular objects16US 5,074,923 AGeneral Electric Company · 1991
- Method for producing a family of forged ring rolling preforms and forging die therefor15US 4,798,077 AEaton Corporation · 1989