B21C 1/24
By means of mandrels
Official title: by means of mandrels
B21C1/24 (By means of mandrels) appears on 153 US grants and 133 published applications in this corpus.
Search patents in B21C- Granted patents
- 153
- Published applications
- 133
- Assignees
- 110
- Inventors
- 340
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 2 |
| 2002 | 1 | 4 |
| 2003 | 2 | 3 |
| 2004 | 4 | 5 |
| 2005 | 3 | 6 |
| 2006 | 1 | 6 |
| 2007 | 6 | 6 |
| 2008 | 2 | 5 |
| 2009 | 4 | 6 |
| 2010 | 4 | 7 |
| 2011 | 3 | 4 |
| 2012 | 6 | 3 |
| 2013 | 4 | 6 |
| 2014 | 4 | 1 |
| 2015 | 2 | 9 |
| 2016 | 3 | 7 |
| 2017 | 4 | 13 |
| 2018 | 6 | 9 |
| 2019 | 6 | 11 |
| 2020 | 12 | 4 |
| 2021 | 9 | 5 |
| 2022 | 1 | 3 |
| 2023 | 5 | 1 |
| 2024 | 5 | 2 |
| 2025 | 2 | 1 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Devices and method for shaping a tubular hollow element29 Sep 2026US 12,746,587 B2FELSS Systems GmbH
- Apparatus and method for reducing the cross section of a tubular hollow body by shaping the hollow body16 Jun 2026US 12,654,212 B2FELSS Systems GmbH
- Aerosol generation device heater element manufacture25 Nov 2025US 12,478,104 B2
- Drawing machine, drawing method and drawing mandrel18 Nov 2025US 12,472,546 B2SMS group GmbH
- Method and apparatus for axially shaping a tube27 Aug 2024US 12,070,783 B2Walter Henrich GmbH
- Method and mechanical arrangement for producing a tubular hollow body from a tubular hollow body blank, in particular for producing a hollow shaft from a shaft blank13 Aug 2026US 2026/0233293 A1FELSS Systems GmbH
- Austenite-based stainless steel pipe and method of manufacturing the same9 Jul 2026US 2026/0193761 A1Nippon Steel Corporation
- Process and apparatus for producing a hollow cylinder for a medical application7 May 2026US 2026/0124051 A1BIOTRONIK SE & Co. KG
- Method and mechanical arrangement for producing a wall profile on a plastically deformable hollow body wall5 Mar 2026US 2026/0061470 A1FELSS Systems GmbH
- Devices and method for shaping a tubular hollow element27 Feb 2025US 2025/0065384 A1FELSS Systems GmbH
Most cited
By later US patents
- Method for producing tubing of varying wall thickness33US 4,616,500 AGeorge A. Mitchell Company · 1986
- Process for cold-forming a tube having a thick-walled end portion29US 4,454,745 AStandard Tube Canada Limited · 1984
- Apparatus for calibrating and surfacing tubes27US 4,063,439 AChabas & Besson S.A. · 1977
- Tube reduction apparatus with integral means for sensing wall thickness during a high speed tube drawing operation27US 4,196,607 AUop LLC · 1980
- Tube drawing technique22US 4,161,112 AThe Babcock & Wilcox Company · 1979