B21B 3/02
Rolling special iron alloys
Official title: Rolling special iron alloys {, e.g. stainless steel}
B21B3/02 (Rolling special iron alloys) appears on 230 US grants and 242 published applications in this corpus.
Search patents in B21B- Granted patents
- 230
- Published applications
- 242
- Assignees
- 123
- Inventors
- 817
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 6 | 0 |
| 1998 | 11 | 0 |
| 1999 | 9 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 2 |
| 2002 | 4 | 4 |
| 2003 | 5 | 9 |
| 2004 | 4 | 8 |
| 2005 | 3 | 7 |
| 2006 | 3 | 5 |
| 2007 | 6 | 6 |
| 2008 | 3 | 10 |
| 2009 | 3 | 16 |
| 2010 | 4 | 7 |
| 2011 | 11 | 9 |
| 2012 | 9 | 5 |
| 2013 | 2 | 12 |
| 2014 | 3 | 9 |
| 2015 | 5 | 14 |
| 2016 | 5 | 8 |
| 2017 | 10 | 13 |
| 2018 | 8 | 16 |
| 2019 | 5 | 11 |
| 2020 | 13 | 13 |
| 2021 | 8 | 13 |
| 2022 | 9 | 7 |
| 2023 | 12 | 10 |
| 2024 | 8 | 10 |
| 2025 | 5 | 12 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Manufacturing method for tinplate6 Oct 2026US 12,752,324 B2Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd (Cn)
- Surface-hardened, rotationally symmetrical workpiece, hardening method and hardening apparatus1 Sep 2026US 12,723,286 B2Walzengiesserei Coswig GmbH
- Internal oxidation starting temperature estimation device, internal oxide layer thickness estimation device, internal oxidation starting temperature estimation method, and program30 Jun 2026US 12,669,491 B2Nippon Steel Corporation
- Method for producing a dual-phase steel strip in a combined casting and rolling system, a dual-phase steel strip produced by means of the method, and a combined casting and rolling system19 May 2026US 12,629,747 B2Primetals Technologies Austria GmbH
- Cold rolling mill rolling condition setting method, cold rolling method, steel sheet manufacturing method, cold rolling mill rolling condition setting device, and cold rolling mill5 May 2026US 12,617,009 B2Jfe Steel Corporation
- Hot rolling equipment and hot rolling method17 Sep 2026US 2026/0273601 A1Nippon Steel Corporation
- Hot roll forming system for high strength component production23 Jul 2026US 2026/0208247 A1GM Global Technology Operations LLC
- Low-loss thin amorphous alloy strip and the manufacturing device and method thereof14 May 2026US 2026/0131367 A1
- Hot rolling with residual elements12 Mar 2026US 2026/0070107 A1
- Cold-rolled steel plate for hot forming, having excellent corrosion-resistance and spot-weldability, hot-formed member, and method for manufacturing same12 Feb 2026US 2026/0043104 A1Posco
Most cited
By later US patents
- Method for making a copper core five-ply composite for cookware71US 6,267,830 B1Clad Metals LLC · 2001
- Apparatus for producing strip of stainless steel31US 5,904,204 ANippon Steel Corporation · 1999
- Method of and process for cold-rolling of stainless-steel and titanium-alloy strip30US 5,554,235 ABWG Bergwerk-Und Walzwerk-Machinenbau GmbH · 1996
- Battery can, sheet for forming battery can, and method for manufacturing sheet27US 5,576,113 AKatayama Special Industries, Ltd. · 1996
- Durable method for producing finned tubing25US 5,016,460 AInco Alloys International, Inc. · 1991