B21B 31/02
Rolling stand frames or housings
Official title: Rolling stand frames {or housings}; Roll mountings {; Roll chocks}
B21B31/02 (Rolling stand frames or housings) appears on 249 US grants and 118 published applications in this corpus.
Search patents in B21B- Granted patents
- 249
- Published applications
- 118
- Assignees
- 143
- Inventors
- 529
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 11 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 1 | 0 |
| 1994 | 6 | 0 |
| 1995 | 7 | 0 |
| 1996 | 4 | 0 |
| 1997 | 12 | 0 |
| 1998 | 13 | 0 |
| 1999 | 13 | 0 |
| 2000 | 11 | 0 |
| 2001 | 10 | 0 |
| 2002 | 7 | 8 |
| 2003 | 5 | 9 |
| 2004 | 6 | 5 |
| 2005 | 5 | 5 |
| 2006 | 3 | 2 |
| 2007 | 4 | 6 |
| 2008 | 5 | 3 |
| 2009 | 0 | 2 |
| 2010 | 3 | 2 |
| 2011 | 1 | 2 |
| 2012 | 2 | 4 |
| 2013 | 1 | 3 |
| 2014 | 2 | 3 |
| 2015 | 4 | 19 |
| 2016 | 9 | 2 |
| 2017 | 8 | 5 |
| 2018 | 5 | 3 |
| 2019 | 4 | 2 |
| 2020 | 3 | 2 |
| 2021 | 3 | 6 |
| 2022 | 4 | 4 |
| 2023 | 4 | 3 |
| 2024 | 4 | 4 |
| 2025 | 3 | 11 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B21B 31/04With tie rods in frameless stands64
- B21B 2031/026Transverse shifting the standIndexing code27
- B21B 2031/023Transverse shifting one housingIndexing code23
- B21B 31/06Fastening stands or frames to foundation16
- B21B 31/028Prestressing of rolls or roll mountings in stand frames15
- B21B 2031/025Shifting the stand in or against the rolling directionIndexing code4
- B21B 2031/021Integral tandem mill housingsIndexing code1
Recent patents
- 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
- Method and apparatus for vertical roll storage17 Mar 2026US 12,576,436 B2Morgan Engineering Systems, Inc.
- Tail end buckling suppression device10 Mar 2026US 12,569,898 B2TMEIC Corporation
- Multistage rolling mill and method of changing divided backing bearing assembled shafts in multistage rolling mill10 Feb 2026US 12,544,815 B2Sendzimir Japan, Ltd.
- Torque support for absorbing drive torques and roller arrangement with a torque support9 Sep 2025US 12,409,482 B2Matthews International Corporation
- 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.
- Rolling machine23 Apr 2026US 2026/0108928 A1Panasonic Intellectual Property Management Co., Ltd.
- Torque Support for Absorbing Drive Torques and Roller Arrangement with a Torque Support4 Dec 2025US 2025/0367720 A1Matthews International Corporation
- Modular stand base for spaced stands of a rolling mil20 Nov 2025US 2025/0353052 A1
Most cited
By later US patents
- Hydroxystyrene compounds which are useful as tyrosine kinase inhibitors45US 4,971,996 AKanegafuchi Kagaku Kogyo Kabushiki Kaisha · 1990
- Hydroxystyrene compounds which have useful pharmaceutical utility38US 5,057,538 AKanegafuchi Kagaku Kogyo Kabushiki Kaisha · 1991
- Universal rolling mill stand35US 6,305,205 B1SMS Schloemann-Siemag Aktiengesellschaft · 2001
- Method and apparatus for continuous casting and hot-rolling32US 5,461,770 AHitachi, Ltd. · 1995
- Cold roll forming apparatus proceding for the exchange of rolls as a unit25US 4,368,633 A1983