B21K 21/16
Remodelling hollow bodies with respect to the shape of the cross-section
Official title: Remodelling hollow bodies with respect to the shape of the cross-section (remodelling end portions only B21K21/12)
B21K21/16 (Remodelling hollow bodies with respect to the shape of the cross-section) appears on 49 US grants and 33 published applications in this corpus.
Search patents in B21K- Granted patents
- 49
- Published applications
- 33
- Assignees
- 35
- Inventors
- 101
- Latest grant
- 20 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 1 |
| 2003 | 0 | 3 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 3 |
| 2012 | 1 | 6 |
| 2013 | 2 | 4 |
| 2014 | 4 | 2 |
| 2015 | 2 | 5 |
| 2016 | 3 | 1 |
| 2017 | 2 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 3 | 2 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 3 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Material dispense tips20 May 2025US 12,303,929 B1DL Technology, LLC.
- Material dispense tips25 Jun 2024US 12,017,247 B1DL Technology, LLC.
- Hot-spinning formation method for large-diameter titanium alloy cylindrical parts10 Oct 2023US 11,779,986 B2
- Method for manufacturing a material dispense tip16 May 2023US 11,648,581 B1DL Technology, LLC.
- Metal sleeve and method for producing it28 Mar 2023US 11,614,156 B2Metaldyne Company LLC
- Radial forging for the manufacture of ball screw actuator shafts12 Sep 2024US 2024/0300005 A1The Boeing Company
- Hot-spinning Formation Method for Large-diameter Titanium Alloy Cylindrical Parts1 Jun 2023US 2023/0166312 A1Xi'an Taijin Industrial Electrochemical Technology Co., Ltd.
- Manufacturing method10 Sep 2020US 2020/0282448 A1ROLLS-ROYCE plc
- Metal Sleeve and Method for Producing It6 Aug 2020US 2020/0248792 A1Metaldyne Company LLC
- Apparatus and method for forming an antipollution device housing17 Aug 2017US 2017/0232502 A1GWS Tube Forming Solutions Inc.
Most cited
By later US patents
- Method and tool for forming a tapered hole in a cylindrical work by punching extruding25US 5,816,093 ANitto Kohki Co., Ltd. · 1998
- Method of cold forming24US 4,166,373 ABraun Engineering Company · 1979
- Apparatus and method for restricting fluid flow in a planar manifold16US 6,457,236 B1Agilent Technologies, Inc. · 2002
- Method of making a thin wall nozzle13US 7,231,716 B22007
- Material dispense tips and methods for manufacturing the same13US 8,707,559 B1DL Technology, LLC. · 2014