B21B 1/08
Metal-rolling methods or mills for making semi-finished products of solid or profiled
Official title: for rolling {structural sections, i.e.} work of special cross-section, e.g. angle steel (rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects B21H8/00)
B21B1/08 (Metal-rolling methods or mills for making semi-finished products of solid or profiled) appears on 318 US grants and 175 published applications in this corpus.
Search patents in B21B- Granted patents
- 318
- Published applications
- 175
- Assignees
- 169
- Inventors
- 717
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 9 | 0 |
| 1981 | 8 | 0 |
| 1982 | 10 | 0 |
| 1983 | 14 | 0 |
| 1984 | 1 | 0 |
| 1985 | 9 | 0 |
| 1986 | 7 | 0 |
| 1987 | 6 | 0 |
| 1988 | 6 | 0 |
| 1989 | 7 | 0 |
| 1990 | 9 | 0 |
| 1991 | 11 | 0 |
| 1992 | 12 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 11 | 0 |
| 1996 | 6 | 0 |
| 1997 | 8 | 0 |
| 1998 | 8 | 0 |
| 1999 | 17 | 0 |
| 2000 | 14 | 0 |
| 2001 | 4 | 0 |
| 2002 | 1 | 8 |
| 2003 | 6 | 8 |
| 2004 | 7 | 8 |
| 2005 | 5 | 2 |
| 2006 | 4 | 5 |
| 2007 | 2 | 5 |
| 2008 | 2 | 4 |
| 2009 | 1 | 6 |
| 2010 | 2 | 5 |
| 2011 | 4 | 2 |
| 2012 | 3 | 8 |
| 2013 | 5 | 10 |
| 2014 | 3 | 10 |
| 2015 | 12 | 11 |
| 2016 | 9 | 6 |
| 2017 | 4 | 11 |
| 2018 | 4 | 10 |
| 2019 | 7 | 11 |
| 2020 | 11 | 12 |
| 2021 | 2 | 8 |
| 2022 | 4 | 3 |
| 2023 | 3 | 10 |
| 2024 | 4 | 5 |
| 2025 | 9 | 6 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B21B 1/088H- or i-sections90
- B21B 1/085Rail sections59
- B21B 1/0815From flat-rolled products37
- B21B 1/095U-or channel sections27
- B21B 1/0805Flat bars, i.e. having a substantially rectangular cross-section25
- B21B 1/082Piling sections having lateral edges specially adapted for interlocking with each other22
- B21B 1/12In a continuous process , i.e. without reversing stands22
- B21B 1/14In a non-continuous process , i.e. at least one reversing stand19
Recent patents
- Gas cutting method for cutting steel material and steel material producing method8 Sep 2026US 12,728,472 B2Jfe Steel Corporation
- Hot rolled storage rack systems and methods30 Jun 2026US 12,667,187 B2Steel King Industries, Inc.
- Forging press for hot forging of asymmetric to symmetric rail and process of forging thereof26 May 2026US RE50,897 E1Savita Nowar
- Casting-rolling integrated plant for producing a hot-rolled finished strip from a steel melt17 Feb 2026US 12,551,943 B2Primetals Technologies Austria GmbH
- Hot-rolled, low-temperature-resistant, H-shaped steel with grade of yield strength of 420 MPa and preparation method therefor23 Dec 2025US 12,503,738 B2Shandong Iron and Steel Company Ltd.
- Hot rolled storage rack systems and methods9 Apr 2026US 2026/0096647 A1Steel King Industries, Inc.
- Method for manufacturing a rail and corresponding rail2 Oct 2025US 2025/0305078 A1ArcelorMittal
- Method and apparatus for manufacturing an elevator guide rail11 Sep 2025US 2025/0281968 A1Vol-Stahl GmbH
- Rolled track link17 Apr 2025US 2025/0121896 A1Caterpillar Inc.
- 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
- Corrugated plate having variable material thickness and method for making same58US 4,241,146 A1980
- Corner bead structure53US 4,876,837 AUSG Interiors, Inc. · 1989
- Method and apparatus for monitoring pass alignment in rolling mills31US 4,059,794 ABritish Steel Corporation · 1977
- Method of and apparatus for the manufacturing of metal profile members, especially steel profile members29US 4,433,565 ATheodor Wuppermann GmbH · 1984
- Creating lines of weakness in sheet material19US 4,109,500 AMetal Box Limited · 1978