B21B 1/22
Metal-rolling methods or mills for making semi-finished products of solid or profiled
Official title: for rolling {plates, strips,} bands or sheets of indefinite length (B21B1/42 takes precedence)
B21B1/22 (Metal-rolling methods or mills for making semi-finished products of solid or profiled) appears on 1,146 US grants and 940 published applications in this corpus.
Search patents in B21B- Granted patents
- 1,146
- Published applications
- 940
- Assignees
- 460
- Inventors
- 2,883
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 9 | 0 |
| 1978 | 12 | 0 |
| 1979 | 6 | 0 |
| 1980 | 6 | 0 |
| 1981 | 18 | 0 |
| 1982 | 17 | 0 |
| 1983 | 13 | 0 |
| 1984 | 12 | 0 |
| 1985 | 20 | 0 |
| 1986 | 14 | 0 |
| 1987 | 10 | 0 |
| 1988 | 20 | 0 |
| 1989 | 20 | 0 |
| 1990 | 12 | 0 |
| 1991 | 12 | 0 |
| 1992 | 11 | 0 |
| 1993 | 16 | 0 |
| 1994 | 13 | 0 |
| 1995 | 21 | 0 |
| 1996 | 26 | 0 |
| 1997 | 26 | 0 |
| 1998 | 46 | 0 |
| 1999 | 39 | 0 |
| 2000 | 40 | 0 |
| 2001 | 39 | 6 |
| 2002 | 20 | 25 |
| 2003 | 19 | 17 |
| 2004 | 16 | 25 |
| 2005 | 10 | 23 |
| 2006 | 11 | 13 |
| 2007 | 13 | 19 |
| 2008 | 10 | 21 |
| 2009 | 9 | 19 |
| 2010 | 9 | 32 |
| 2011 | 16 | 19 |
| 2012 | 12 | 28 |
| 2013 | 24 | 26 |
| 2014 | 12 | 49 |
| 2015 | 38 | 59 |
| 2016 | 24 | 58 |
| 2017 | 34 | 62 |
| 2018 | 47 | 60 |
| 2019 | 52 | 55 |
| 2020 | 51 | 43 |
| 2021 | 34 | 37 |
| 2022 | 41 | 51 |
| 2023 | 49 | 57 |
| 2024 | 40 | 52 |
| 2025 | 42 | 35 |
| 2026 | 25 | 49 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B21B 1/24In a continuous or semi-continuous process503
- B21B 1/30In a non-continuous process220
- B21B 1/227Surface roughening or texturing189
- B21B 2001/225By hot-rollingIndexing code109
- B21B 2001/228Skin pass rolling or temper rollingIndexing code77
- B21B 2001/221By cold-rollingIndexing code60
- B21B 1/222In a rolling-drawing process32
- B21B 1/224Edge rolling of flat products32
Recent patents
- Flat metal product and component based thereon15 Sep 2026US 12,734,569 B2ThyssenKrupp Steel Europe AG
- Electrode sheet manufacturing device21 Jul 2026US 12,689,020 B2Prime Planet Energy & Solutions, Inc.
- Rolling mill with movable housing and sealed door30 Jun 2026US 12,667,874 B2Fives Dms
- Structural panel assembly and method of manufacturing16 Jun 2026US 12,654,780 B2GM Global Technology Operations LLC
- Dynamic roll eccentricity identification using extended Kalman filter state estimation and control upgrade for cold rolling mills2 Jun 2026US 12,643,136 B2Honeywell International Inc.
- Hot rolling equipment and hot rolling method17 Sep 2026US 2026/0273601 A1Nippon Steel Corporation
- Method and equipment for cooling on a reversing hot rolling mill3 Sep 2026US 2026/0257262 A1Constellium Muscle Shoals LLC
- Method for cutting a metal strip to length and rolling mill with a shear for cutting a metal strip to length20 Aug 2026US 2026/0241426 A1SMS group GmbH
- Scrap clearing system, metal-strip production line, and scrap clearing method13 Aug 2026US 2026/0233273 A1Primetals Technologies Austria GmbH
- Reversible roughing mill for an aluminum or aluminum alloy product and related process13 Aug 2026US 2026/0233276 A1Danieli & C. Officine Meccaniche SpA
Most cited
By later US patents
- Method for reducing thickness of a titanium foil or thin strip element91US 5,226,989 ATexas Instruments Incorporated · 1993
- Method for making a copper core five-ply composite for cookware71US 6,267,830 B1Clad Metals LLC · 2001
- Method of providing textures on material by rolling61US 5,025,547 AAluminum Company of America · 1991
- Heat transfer tubes and method for manufacturing61US 5,052,476 A501 Mitsubishi Shindoh Co., Ltd. · 1991
- Method and device for manufacturing cold rolled metal sheets or strips and metal sheets or strips obtained52US 5,789,066 ASidmar N.V. · 1998