B21C 37/292
Forming collars by drawing or pushing a rigid forming tool through an
Official title: {Forming collars by drawing or pushing a rigid forming tool through an opening in the tube wall}
B21C37/292 (Forming collars by drawing or pushing a rigid forming tool through an) appears on 59 US grants and 22 published applications in this corpus.
Search patents in B21C- Granted patents
- 59
- Published applications
- 22
- Assignees
- 52
- Inventors
- 133
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 3 |
| 2003 | 3 | 2 |
| 2004 | 0 | 2 |
| 2005 | 5 | 3 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 3 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 2 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 2 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 2 |
| 2025 | 2 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and device for perforating a pipe wall25 Aug 2026US 12,715,029 B2T-Drill Oy
- Tee type connector pipe manufacturing method5 Aug 2025US 12,377,456 B2
- Apparatus for producing branch structure in metal pipe, and method for producing branch structure in metal pipe3 Jun 2025US 12,318,833 B2Araki Technical and Research Co., Ltd
- Forming method and forming apparatus21 Feb 2023US 11,583,907 B2KYB Corporation
- Pulling member5 Apr 2022US 11,292,042 B1Confident & Competent, Inc.
- Tee type connector pipe manufacturing method10 Oct 2024US 2024/0335869 A1
- Method and device for perforating a pipe wall4 Apr 2024US 2024/0109117 A1T-Drill Oy
- Apparatus for producing branch structure in metal pipe, and method for producing branch structure in metal pipe5 Oct 2023US 2023/0311194 A1Araki Technical and Research Co., Ltd
- Forming method and forming apparatus18 Jun 2020US 2020/0188978 A1KYB Corporation
- Manifold for a liquid cooling system8 Dec 2016US 2016/0354833 A1International Business Machines Corporation
Most cited
By later US patents
- Method of manufacturing a branched pipe by internal high-pressure forming18US 5,697,155 AMercedes-Benz AG · 1997
- Press for pressing pipe fittings15US 4,106,322 A1978
- Manufacture of pipe stubs in walls of very great thickness14US 4,111,029 ACreusot-Loire · 1978
- Method of manufacturing lateral header extensions11US 4,680,845 ABrazeway, Inc. · 1987
- Valve device using pipes and method of manufacturing it11US 5,829,468 AToto Ltd. · 1998