B21B 31/32
By liquid pressure
Official title: by liquid pressure {, e.g. hydromechanical adjusting}
B21B31/32 (By liquid pressure) appears on 134 US grants and 69 published applications in this corpus.
Search patents in B21B- Granted patents
- 134
- Published applications
- 69
- Assignees
- 80
- Inventors
- 290
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 8 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 8 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 7 | 0 |
| 2001 | 5 | 2 |
| 2002 | 3 | 2 |
| 2003 | 4 | 4 |
| 2004 | 0 | 4 |
| 2005 | 2 | 2 |
| 2006 | 2 | 1 |
| 2007 | 1 | 4 |
| 2008 | 3 | 2 |
| 2009 | 2 | 6 |
| 2010 | 5 | 2 |
| 2011 | 1 | 5 |
| 2012 | 2 | 1 |
| 2013 | 1 | 2 |
| 2014 | 1 | 2 |
| 2015 | 3 | 2 |
| 2016 | 3 | 0 |
| 2017 | 2 | 2 |
| 2018 | 0 | 2 |
| 2019 | 2 | 3 |
| 2020 | 2 | 2 |
| 2021 | 2 | 4 |
| 2022 | 4 | 3 |
| 2023 | 7 | 8 |
| 2024 | 3 | 2 |
| 2025 | 4 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Roll press machine23 Jun 2026US 12,661,700 B2Hitachi Power Solutions Co., Ltd.
- Stabilization of the rolled product during opening and/or closing of a roll stand9 Dec 2025US 12,491,551 B2SMS group GmbH
- Device and method for rolling a metal strip18 Nov 2025US 12,472,545 B2SMS group GmbH
- Hot-rolling stand for a hot-rolling mill and for producing a flat metal product, hot-rolling mill and method for operating a hot-rolling mill1 Jul 2025US 12,343,776 B2SMS group GmbH
- Cross-rolling unit and method for adjusting a roll gap7 Jan 2025US 12,186,790 B2SMS group GmbH
- Cold rolling mill comprising a side-shift system21 May 2026US 2026/0138167 A1Fives Dms
- Rolling mill and rolling method5 Mar 2026US 2026/0061468 A1Primetals Technologies Japan, Ltd.
- Roll steering control systems and methods for tandem mills20 Jun 2024US 2024/0198402 A1Novelis Inc.
- Roll press machine15 Feb 2024US 2024/0051004 A1Hitachi Power Solutions Co., Ltd.
- Cross-rolling unit and method for adjusting a roll gap28 Dec 2023US 2023/0415212 A1SMS group GmbH
Most cited
By later US patents
- Method and apparatus for manufacturing metallic support beams for windscreen wiper blade assemblies40US 5,875,672 A1999
- Device for the treatment of flat materials20US 5,598,774 ABoegli-Gravures S.A. · 1997
- Direct-operated servo valve, fluid pressure servo mechanism and control method for the direct-operated servo valve17US 5,040,569 AHitachi, Ltd. · 1991
- Control system with pilot controller, especially for a roll stand16US 5,353,217 ASiemens Aktiengesellschaft · 1994
- Adjusting mechanism for a universal stand14US 4,918,964 ASMS Schloemann-Siemag Aktiengesellschaft · 1990