B21C 23/085
Making tubes
Official title: {Making tubes (B21C23/10 take precedence)}
B21C23/085 (Making tubes) appears on 232 US grants and 249 published applications in this corpus.
Search patents in B21C- Granted patents
- 232
- Published applications
- 249
- Assignees
- 174
- Inventors
- 624
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 1 | 2 |
| 2002 | 5 | 6 |
| 2003 | 4 | 9 |
| 2004 | 4 | 4 |
| 2005 | 5 | 7 |
| 2006 | 4 | 7 |
| 2007 | 2 | 7 |
| 2008 | 1 | 4 |
| 2009 | 3 | 6 |
| 2010 | 3 | 5 |
| 2011 | 5 | 11 |
| 2012 | 8 | 5 |
| 2013 | 6 | 8 |
| 2014 | 4 | 13 |
| 2015 | 8 | 15 |
| 2016 | 10 | 10 |
| 2017 | 9 | 17 |
| 2018 | 12 | 16 |
| 2019 | 17 | 12 |
| 2020 | 8 | 16 |
| 2021 | 12 | 13 |
| 2022 | 14 | 9 |
| 2023 | 9 | 14 |
| 2024 | 9 | 17 |
| 2025 | 15 | 11 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Thin-walled composite pipe with high thermal conductivity, and preparation method and application thereof6 Oct 2026US 12,752,327 B2Shaanxi Zinc Industry Co., Ltd.
- Devices and methods for performing shear-assisted extrusion and extrusion processes14 Apr 2026US 12,599,949 B2Battelle Memorial Institute
- Devices and methods for performing shear-assisted extrusion and extrusion processes17 Feb 2026US 12,551,946 B2Battelle Memorial Institute
- Shear assisted extrusion apparatus, tools, and methods23 Dec 2025US 12,502,701 B2Battelle Memorial Institute
- Method for manufacturing an aluminium tube, a method for manufacturing an aluminium slug, an aluminium tube and an aluminium slug28 Oct 2025US 12,453,995 B2Tubex Tubenfabrik Wolfsberg GmbH
- Extrusion molding method and extrusion molding apparatus of a differential thickness pipe having a solid part25 Jun 2026US 2026/0175277 A1Sango Co., Ltd.
- Shear Assisted Extrusion Apparatus, Tools, and Methods21 May 2026US 2026/0138170 A1Battelle Memorial Institute
- Process and apparatus for producing a hollow cylinder for a medical application7 May 2026US 2026/0124051 A1BIOTRONIK SE & Co. KG
- Suspension link for vehicles, in particular motor vehicles, and method for manufacturing such a suspension link5 Mar 2026US 2026/0061792 A1Willi Elbe Gelenkwellen GmbH & Co. KG
- Extruded heat pipe15 Jan 2026US 2026/0014608 A1Intel Corporation
Most cited
By later US patents
- Extrusion molding process and apparatus82US 6,027,683 A2000
- Process of forming an irregular surface on the inside of a tube or pipe57US 3,944,641 A1976
- Hydroformed structural member with varied wall thickness50US 5,557,961 AGeneral Motors Corporation · 1996
- Methods for forming artificial diamond48US 5,462,772 A1995
- Receiver dryer for a refrigeration system37US 4,072,615 AFord Aerospace & Communications Corporation · 1978