B21B 27/021
Rolls for sheets or strips
Official title: {Rolls for sheets or strips}
B21B27/021 (Rolls for sheets or strips) appears on 81 US grants and 80 published applications in this corpus.
Search patents in B21B- Granted patents
- 81
- Published applications
- 80
- Assignees
- 67
- Inventors
- 216
- Latest grant
- 16 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 0 | 2 |
| 2004 | 0 | 1 |
| 2005 | 1 | 3 |
| 2006 | 4 | 1 |
| 2007 | 0 | 3 |
| 2008 | 0 | 2 |
| 2009 | 0 | 2 |
| 2010 | 2 | 6 |
| 2011 | 1 | 3 |
| 2012 | 4 | 2 |
| 2013 | 3 | 3 |
| 2014 | 3 | 0 |
| 2015 | 4 | 8 |
| 2016 | 5 | 2 |
| 2017 | 5 | 5 |
| 2018 | 1 | 3 |
| 2019 | 2 | 4 |
| 2020 | 4 | 4 |
| 2021 | 3 | 6 |
| 2022 | 4 | 7 |
| 2023 | 4 | 3 |
| 2024 | 6 | 5 |
| 2025 | 5 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Nip roller, pole piece flattening equipment and pole piece production system16 Sep 2025US 12,415,215 B2Contemporary Amperex Technology (Hong Kong) Limited
- Tubular structure reinforcing13 May 2025US 12,297,951 B2Keystone Tower Systems, Inc.
- Changing the effective contour of a running surface of a working roll during hot rolling of rolling stock in a roll stand to form a rolled strip29 Apr 2025US 12,285,790 B2Primetals Technologies Germany GmbH
- Rolling mill for diameter reducing rolling and method for manufacturing strip material8 Apr 2025US 12,269,079 B2Jfe Steel Corporation
- Method and plant for producing flat rolled products7 Jan 2025US 12,186,789 B2Danieli & C. Officine Meccaniche SpA
- Roller for rolling electrode sheet comprising hard layer formed by physical vapor deposition and manufacturing method of the same4 Jun 2026US 2026/0151813 A1J&L Tech Co., Ltd.
- Asymmetrical rolling device13 Nov 2025US 2025/0345835 A1Solum Advanced Materials Co., Ltd.
- Electrode Rolling Apparatus21 Aug 2025US 2025/0262831 A1
- Rolling mill and rolling method12 Dec 2024US 2024/0408659 A1Primetals Technologies Japan, Ltd.
- Rolling mill installation comprising a robotic system configured for extracting rolls from a rolling mill and a tool change magazine17 Oct 2024US 2024/0342777 A1Fives Dms
Most cited
By later US patents
- Rotary die cutting system and method for sheet material78US 5,388,490 A1995
- Rolling mill and method for rolling a sheet material25US 4,369,646 AHitachi, Ltd. · 1983
- 4-High rolling mill17US 5,174,144 AHitachi, Ltd. · 1992
- Inverse symmetrical variable crown roll and associated method15US 6,119,500 ADanieli Corporation · 2000
- Method for the static and dynamic control of the planarity of flat rolled products15US 6,338,262 B12002