B21C 23/04
By direct extrusion
Official title: by direct extrusion
B21C23/04 (By direct extrusion) appears on 658 US grants and 659 published applications in this corpus.
Search patents in B21C- Granted patents
- 658
- Published applications
- 659
- Assignees
- 449
- Inventors
- 1,587
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 8 | 0 |
| 1978 | 12 | 0 |
| 1979 | 7 | 0 |
| 1980 | 6 | 0 |
| 1981 | 7 | 0 |
| 1982 | 7 | 0 |
| 1983 | 1 | 0 |
| 1984 | 6 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 9 | 0 |
| 1990 | 7 | 0 |
| 1991 | 8 | 0 |
| 1992 | 8 | 0 |
| 1993 | 8 | 0 |
| 1994 | 11 | 0 |
| 1995 | 6 | 0 |
| 1996 | 11 | 0 |
| 1997 | 11 | 0 |
| 1998 | 12 | 0 |
| 1999 | 5 | 0 |
| 2000 | 12 | 0 |
| 2001 | 17 | 8 |
| 2002 | 15 | 13 |
| 2003 | 12 | 28 |
| 2004 | 13 | 22 |
| 2005 | 15 | 21 |
| 2006 | 12 | 22 |
| 2007 | 17 | 19 |
| 2008 | 5 | 15 |
| 2009 | 8 | 12 |
| 2010 | 10 | 23 |
| 2011 | 10 | 21 |
| 2012 | 20 | 15 |
| 2013 | 10 | 19 |
| 2014 | 10 | 23 |
| 2015 | 16 | 28 |
| 2016 | 18 | 29 |
| 2017 | 21 | 35 |
| 2018 | 25 | 39 |
| 2019 | 33 | 44 |
| 2020 | 27 | 38 |
| 2021 | 26 | 41 |
| 2022 | 31 | 33 |
| 2023 | 27 | 33 |
| 2024 | 26 | 33 |
| 2025 | 42 | 31 |
| 2026 | 10 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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
- Solid state manufacturing tools and methods using them9 Jun 2026US 12,649,178 B2MELD Manufacturing Corporation
- Front loading extrusion press for producing metal extrudates by extruding a billet26 May 2026US 12,636,692 B2Danieli & C. Officine Meccaniche SpA
- Devices and methods for performing shear-assisted extrusion and extrusion processes14 Apr 2026US 12,599,949 B2Battelle Memorial Institute
- Joining member and framework structure16 Jul 2026US 2026/0201918 A1AND Co., Ltd.
- Extrusion molding method and extrusion molding apparatus of a differential thickness pipe having a solid part25 Jun 2026US 2026/0175277 A1Sango Co., Ltd.
- Extruded door frame subassembly, methods, and systems for producing the same25 Jun 2026US 2026/0175510 A1Manufacturing Resources International, Inc.
- Method and mold for cold extrusion forming of wheel hub18 Jun 2026US 2026/0166612 A1Ningbo J.B.J Intelligence Technology Co., Ltd.
- Drilling tool, blank for drilling tool, and method for manufacturing blank for drilling tool11 Jun 2026US 2026/0158563 A1Osg Corporation
Most cited
By later US patents
- Systems and methods for arc and node design and manufacture117US 10,173,255 B2Divergent Technologies, Inc. · 2019
- Extrusion molding process and apparatus82US 6,027,683 A2000
- Method of making a sintered body having an internal channel73US 4,881,431 AFried. Krupp Gesellscahft mit beschrankter Haftung · 1989
- Process of forming an irregular surface on the inside of a tube or pipe57US 3,944,641 A1976
- Structure body and hollow shape extruded frame member57US 6,250,037 B1Hitachi, Ltd. · 2001