B21C 23/00
Extruding metal
Official title: Extruding metal; Impact extrusion
B21C23/00 (Extruding metal) appears on 1,492 US grants and 1,310 published applications in this corpus.
Search patents in B21C- Granted patents
- 1,492
- Published applications
- 1,310
- Assignees
- 863
- Inventors
- 3,286
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 25 | 0 |
| 1977 | 38 | 0 |
| 1978 | 38 | 0 |
| 1979 | 18 | 0 |
| 1980 | 26 | 0 |
| 1981 | 18 | 0 |
| 1982 | 23 | 0 |
| 1983 | 13 | 0 |
| 1984 | 23 | 0 |
| 1985 | 9 | 0 |
| 1986 | 19 | 0 |
| 1987 | 15 | 0 |
| 1988 | 21 | 0 |
| 1989 | 21 | 0 |
| 1990 | 20 | 0 |
| 1991 | 23 | 0 |
| 1992 | 19 | 0 |
| 1993 | 18 | 0 |
| 1994 | 25 | 0 |
| 1995 | 18 | 0 |
| 1996 | 22 | 0 |
| 1997 | 24 | 0 |
| 1998 | 26 | 0 |
| 1999 | 25 | 0 |
| 2000 | 28 | 0 |
| 2001 | 34 | 12 |
| 2002 | 26 | 27 |
| 2003 | 24 | 47 |
| 2004 | 25 | 36 |
| 2005 | 29 | 49 |
| 2006 | 27 | 45 |
| 2007 | 39 | 36 |
| 2008 | 18 | 40 |
| 2009 | 17 | 40 |
| 2010 | 21 | 43 |
| 2011 | 18 | 41 |
| 2012 | 36 | 35 |
| 2013 | 24 | 47 |
| 2014 | 25 | 64 |
| 2015 | 38 | 65 |
| 2016 | 42 | 64 |
| 2017 | 55 | 75 |
| 2018 | 40 | 75 |
| 2019 | 70 | 76 |
| 2020 | 54 | 75 |
| 2021 | 45 | 63 |
| 2022 | 54 | 54 |
| 2023 | 54 | 64 |
| 2024 | 40 | 53 |
| 2025 | 62 | 49 |
| 2026 | 20 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B21C 23/02Making uncoated products825
- B21C 23/002Extruding materials of special alloys so far as the composition of the235
- B21C 23/21Presses specially adapted for extruding metal204
- B21C 23/22Making metal-coated products183
- B21C 23/005Continuous extrusion starting from solid state material155
- B21C 23/001To improve the material properties130
- B21C 23/01Starting from material of particular form or shape88
- B21C 23/007Hydrostatic extrusion66
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.
- Die assembly and methods for friction stir extrusion15 Sep 2026US 12,734,571 B2Ohio State Innovation Foundation
- Method for manufacturing aluminum alloy extruded material with high strength and excellent in SCC resistance and hardenability25 Aug 2026US 12,716,118 B2Aisin Keikinzoku Kabushiki Kaisha
- Method for obtaining a component made of a palladium-indium alloy having a good workability14 Jul 2026US 12,678,847 B1
- Method and apparatus for manufacturing aluminum alloy extruded part30 Jun 2026US 12,667,880 B2Kobe Steel, Ltd.
- Extruded structural component for a motor vehicle and method for its manufacture10 Sep 2026US 2026/0265876 A1Benteler Automobiltechnik GmbH
- Bolt10 Sep 2026US 2026/0265879 A1Nippon Steel Corporation
- A screw extruder and a method of controlling extrusion pressure in a screw extruder13 Aug 2026US 2026/0233278 A1Circmet AS
- Systems and methods for producing extruded materials from loose chips30 Jul 2026US 2026/0216774 A1Nissan North America, Inc.
- Medium strength 7xxx series regenerated aluminum alloy and method for preparing the same23 Jul 2026US 2026/0209893 A1Taiwan Hodaka Technology Co., Ltd.
Most cited
By later US patents
- Systems and methods for arc and node design and manufacture117US 10,173,255 B2Divergent Technologies, Inc. · 2019
- Headset connector110US 8,401,219 B2Apple Inc. · 2013
- Ultrafine-grained titanium for medical implants105US 6,399,215 B1The Regents of the University of California · 2002
- Wireless headset having adaptive powering94US 8,185,084 B2Apple Inc. · 2012
- Extrusion molding process and apparatus82US 6,027,683 A2000