B21K 21/02
Producing blanks in the shape of discs or cups as semifinished articles
Official title: Producing blanks in the shape of discs or cups as semifinished articles for making hollow articles, e.g. to be deep-drawn or extruded
B21K21/02 (Producing blanks in the shape of discs or cups as semifinished articles) appears on 28 US grants and 22 published applications in this corpus.
Search patents in B21K- Granted patents
- 28
- Published applications
- 22
- Assignees
- 29
- Inventors
- 85
- Latest grant
- 12 Mar 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 2 |
| 2007 | 2 | 3 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 2 | 2 |
| 2013 | 2 | 1 |
| 2014 | 0 | 2 |
| 2015 | 1 | 1 |
| 2016 | 2 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 1 |
| 2023 | 1 | 1 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Precision forging method, precision forging device, and precision forging product12 Mar 2024US 11,925,972 B2National University Corporation Tokai National Higher Education and Research System
- Method for forming large-size QCr0.8 alloy tapered cylindrical ring27 Jun 2023US 11,684,965 B2Xi'an Space Engine Company Limited
- Method of manufacturing cup structure19 Oct 2021US 11,148,186 B2Matec S.p.A.
- Forging device and forging method20 Dec 2016US 9,522,422 B2Kaga, Inc.
- Torsional extreme-plastic processing method of conic metal pipe20 Sep 2016US 9,447,487 B2Postech Academy-Industry Foundation
- Press coining systems and methods7 Dec 2023US 2023/0390823 A1Rohr, Inc.
- Method for forming large-size qcr0.8 alloy tapered cylindrical ring31 Mar 2022US 2022/0097123 A1Xi'an Space Engine Company Limited
- Precision forging method, precision forging device, and precision forging product4 Nov 2021US 2021/0339306 A1National University Corporation Tokai National Higher Education and Research System
- Method of manufacturing cup structure30 May 2019US 2019/0160511 A1Matec S.p.A.
- Forging device and forging method17 Mar 2016US 2016/0074929 A1Kaga, Inc.
Most cited
By later US patents
- Method of manufacturing a hollow point bullet65US 5,943,749 AThe Nippert Company · 1999
- Twin-shelled artificial hip joint and its manufacture51US 6,045,583 ASulzer Orthopaedie AG · 2000
- Method of making metal containers45US 6,945,085 B1CCL Container (Hermitage) Inc. · 2005
- Method and system for warm or hot high-velocity die forging32US 5,894,752 ASanyo Special Steel Co., Ltd. · 1999
- Process for manufacturing a captive screw10US 5,910,052 ASouthco, Inc. · 1999