B21B 1/02
Metal-rolling methods or mills for making semi-finished products of solid or profiled
Official title: for rolling heavy work, e.g. ingots, slabs, {blooms, or} billets, in which the cross-sectional form is unimportant {; Rolling combined with forging or pressing}
B21B1/02 (Metal-rolling methods or mills for making semi-finished products of solid or profiled) appears on 171 US grants and 140 published applications in this corpus.
Search patents in B21B- Granted patents
- 171
- Published applications
- 140
- Assignees
- 101
- Inventors
- 562
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 7 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 1 |
| 2002 | 5 | 1 |
| 2003 | 0 | 6 |
| 2004 | 2 | 1 |
| 2005 | 2 | 6 |
| 2006 | 2 | 1 |
| 2007 | 2 | 4 |
| 2008 | 1 | 3 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 3 |
| 2012 | 2 | 3 |
| 2013 | 3 | 5 |
| 2014 | 1 | 12 |
| 2015 | 4 | 11 |
| 2016 | 5 | 4 |
| 2017 | 6 | 10 |
| 2018 | 8 | 22 |
| 2019 | 8 | 8 |
| 2020 | 10 | 6 |
| 2021 | 7 | 5 |
| 2022 | 6 | 4 |
| 2023 | 4 | 2 |
| 2024 | 4 | 4 |
| 2025 | 5 | 9 |
| 2026 | 2 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hot rolling mill with separator for mill scale from wastewater17 Mar 2026US 12,576,347 B2ArcelorMittal
- Manufacturing method for slab and continuous casting equipment6 Jan 2026US 12,515,246 B2Nippon Steel Corporation
- Billet rolling mill equipped with a manipulator subassembly and method for controlling such a rolling mill25 Nov 2025US 12,479,017 B2Forge Pat GmbH
- Hot-rolled steel sheet and method for manufacturing same30 Sep 2025US 12,428,694 B2Nippon Steel Corporation
- Free-cutting steel and manufacturing method thereof2 Sep 2025US 12,404,573 B2Jfe Steel Corporation
- Method of making thick aluminum alloy products8 Oct 2026US 2026/0308740 A1Arconic Technologies LLC
- 5xxx aluminum alloy capable of refining mig weld grains and preparation method and application thereof13 Aug 2026US 2026/0234759 A1Chinalco Materials Application Research Institution Co., Ltd.
- Steel plate and method of producing same, and steel pipe or tube9 Jul 2026US 2026/0193751 A1Jfe Steel Corporation
- Steel plate and method of producing same, and steel pipe or tube2 Jul 2026US 2026/0183815 A1Jfe Steel Corporation
- Width prediction method of rough rolled material, width control method of rough rolled material, manufacturing method of hot-rolled steel sheet, and generation method of width prediction model of rough rolled material2 Jul 2026US 2026/0183816 A1Jfe Steel Corporation
Most cited
By later US patents
- Apparatus for and method of processing billets in a rolling mill69US 6,233,994 B1Morgan Construction Company · 2001
- Metallic material having ultra-fine grain structure and method for its manufacture65US 5,080,727 ASumitomo Metal Industries, Ltd. · 1992
- Method and apparatus for intensive plastic deformation of flat billets22US 5,850,755 A1998
- Continuous backpass rolling mill21US 4,793,169 AUnited Engineering, Inc. · 1988
- Press type method of and apparatus for reducing slab width14US 4,578,983 AHitachi, Ltd. · 1986