B21B 1/38
Metal-rolling methods or mills for making semi-finished products of solid or profiled
Official title: for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, {pack rolling}(B21B1/40 takes precedence; folding sheets before, or separating layers after, rolling B21B47/00)
B21B1/38 (Metal-rolling methods or mills for making semi-finished products of solid or profiled) appears on 218 US grants and 157 published applications in this corpus.
Search patents in B21B- Granted patents
- 218
- Published applications
- 157
- Assignees
- 168
- Inventors
- 617
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 2 | 0 |
| 1988 | 6 | 0 |
| 1989 | 2 | 0 |
| 1990 | 8 | 0 |
| 1991 | 5 | 0 |
| 1992 | 10 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 7 | 0 |
| 1997 | 6 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 4 |
| 2002 | 3 | 2 |
| 2003 | 6 | 8 |
| 2004 | 4 | 8 |
| 2005 | 0 | 2 |
| 2006 | 1 | 3 |
| 2007 | 1 | 7 |
| 2008 | 4 | 5 |
| 2009 | 2 | 0 |
| 2010 | 5 | 5 |
| 2011 | 2 | 1 |
| 2012 | 4 | 0 |
| 2013 | 1 | 3 |
| 2014 | 1 | 10 |
| 2015 | 4 | 9 |
| 2016 | 1 | 4 |
| 2017 | 3 | 7 |
| 2018 | 4 | 11 |
| 2019 | 10 | 19 |
| 2020 | 14 | 8 |
| 2021 | 7 | 5 |
| 2022 | 6 | 11 |
| 2023 | 9 | 11 |
| 2024 | 17 | 7 |
| 2025 | 4 | 4 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Carbon steel and austenitic stainless steel rolling clad plate manufacturing method therefor19 May 2026US 12,629,766 B2Baoshan Iron & Steel Co., Ltd.
- Single-tooth track plate cogging-down pass and hot rolling method21 Oct 2025US 12,447,516 B2Shandong Iron and Steel Company Ltd.
- Electrically-assisted tooth-shaped rolling process and device for preparing gradient ultrafine-grained sheet30 Sep 2025US 12,427,561 B1Hefei University of Technology
- Method for differential temperature rolling of composite strips based on actions of friction roller and device thereof20 May 2025US 12,303,955 B2Taiyuan University of Technology
- Method for producing a continuous strip-shaped composite material7 Jan 2025US 12,186,825 B2SMS group GmbH
- Stainless steel clad plate with excellent shape and preparation method thereof20 Aug 2026US 2026/0241428 A1Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd (Cn)
- Production and processing equipment for oxygen-free copper alloy thick strips and processing method thereof16 Jul 2026US 2026/0199946 A1Jinvi Copper Corporation, Tongling Nonferrous Metals Group Holding Co., Ltd.
- Rolling methods using corrugated rolls and rolling systems30 Apr 2026US 2026/0115777 A1Taiyuan University of Technology
- Systems and apparatus for manufacturing multiple large-sized sandwich panels10 Apr 2025US 2025/0114833 A1
- Single-tooth track plate cogging-down pass and hot rolling method3 Apr 2025US 2025/0108419 A1Shandong Iron and Steel Company Ltd.
Most cited
By later US patents
- Method for reducing thickness of a high-strength low-ductility metal foil on thin strip element89US 5,222,282 ATexas Instruments Incorporated · 1993
- Method for making a copper core five-ply composite for cookware71US 6,267,830 B1Clad Metals LLC · 2001
- Clad metallurgical products and methods of manufacture61US 5,476,725 AAluminum Company of America · 1995
- Method and device for manufacturing cold rolled metal sheets or strips and metal sheets or strips obtained52US 5,789,066 ASidmar N.V. · 1998
- Process for producing a metal article52US 6,569,270 B2Honeywell International Inc. · 2003