B21B 31/00
Rolling stand structures
Official title: Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
B21B31/00 (Rolling stand structures) appears on 1,071 US grants and 508 published applications in this corpus.
Search patents in B21B- Granted patents
- 1,071
- Published applications
- 508
- Assignees
- 384
- Inventors
- 1,668
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 22 | 0 |
| 1977 | 17 | 0 |
| 1978 | 19 | 0 |
| 1979 | 16 | 0 |
| 1980 | 23 | 0 |
| 1981 | 14 | 0 |
| 1982 | 12 | 0 |
| 1983 | 22 | 0 |
| 1984 | 24 | 0 |
| 1985 | 22 | 0 |
| 1986 | 23 | 0 |
| 1987 | 24 | 0 |
| 1988 | 27 | 0 |
| 1989 | 22 | 0 |
| 1990 | 42 | 0 |
| 1991 | 26 | 0 |
| 1992 | 30 | 0 |
| 1993 | 11 | 0 |
| 1994 | 15 | 0 |
| 1995 | 22 | 0 |
| 1996 | 17 | 0 |
| 1997 | 36 | 0 |
| 1998 | 33 | 0 |
| 1999 | 42 | 0 |
| 2000 | 45 | 0 |
| 2001 | 34 | 7 |
| 2002 | 23 | 23 |
| 2003 | 23 | 29 |
| 2004 | 20 | 27 |
| 2005 | 15 | 18 |
| 2006 | 18 | 13 |
| 2007 | 12 | 29 |
| 2008 | 18 | 11 |
| 2009 | 10 | 20 |
| 2010 | 15 | 23 |
| 2011 | 10 | 20 |
| 2012 | 17 | 19 |
| 2013 | 22 | 21 |
| 2014 | 14 | 19 |
| 2015 | 19 | 39 |
| 2016 | 27 | 15 |
| 2017 | 28 | 13 |
| 2018 | 14 | 18 |
| 2019 | 12 | 18 |
| 2020 | 15 | 13 |
| 2021 | 14 | 24 |
| 2022 | 19 | 18 |
| 2023 | 24 | 20 |
| 2024 | 14 | 22 |
| 2025 | 13 | 21 |
| 2026 | 15 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rolling mill stand and method of changing a work roll assembly thereof22 Sep 2026US 12,741,305 B2Primetals Technologies, Limited
- Three-dimensional quick replacement machine for production line15 Sep 2026US 12,734,570 B2Dalian Field Manufacturing Co., Ltd
- Sliding machine that can process two different sheets at the same time and give variable forms1 Sep 2026US 12,722,192 B2Sente Makina Insaat Sanayi Ve Ticaret Limited Sirketi
- Roll device for rolling metal strips, roll arrangement for use in such a roll device and method for converting a roll device21 Jul 2026US 12,686,042 B2SMS group GmbH
- Determination method for determination of the rolling or guiding gaps of the roll stands or guide stands in a multi-stand rolling mill30 Jun 2026US 12,667,879 B2SMS group GmbH
- Rolling mill stand with roll distance adjustment system8 Oct 2026US 2026/0307124 A1Danieli & C. Officine Meccaniche SpA
- Method and apparatus for vertical roll storage25 Jun 2026US 2026/0175275 A1Morgan Engineering Systems, Inc.
- Rolling machine28 May 2026US 2026/0145214 A1Panasonic Intellectual Property Management Co., Ltd.
- Cold rolling mill comprising a side-shift system21 May 2026US 2026/0138167 A1Fives Dms
- Asymmetric rolling apparatus and cassette device23 Apr 2026US 2026/0108927 A1Solum Advanced Materials Co., Ltd.
Most cited
By later US patents
- Rotary die cutting system and method for sheet material78US 5,388,490 A1995
- Hydroxystyrene compounds which are useful as tyrosine kinase inhibitors45US 4,971,996 AKanegafuchi Kagaku Kogyo Kabushiki Kaisha · 1990
- Captured rotor seal45US 5,158,304 AInpro Companies, Inc. · 1992
- Hydrodynamic seal44US 4,770,548 AThe Timken Company · 1988
- Compact seal41US 4,799,808 AThe Timken Company · 1989