B21B 35/00
Drives for metal-rolling mills
Official title: Drives for metal-rolling mills {, e.g. hydraulic drives}
B21B35/00 (Drives for metal-rolling mills) appears on 318 US grants and 145 published applications in this corpus.
Search patents in B21B- Granted patents
- 318
- Published applications
- 145
- Assignees
- 164
- Inventors
- 582
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 11 | 0 |
| 1978 | 12 | 0 |
| 1979 | 11 | 0 |
| 1980 | 8 | 0 |
| 1981 | 11 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 6 | 0 |
| 1985 | 7 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 7 | 0 |
| 1989 | 7 | 0 |
| 1990 | 10 | 0 |
| 1991 | 10 | 0 |
| 1992 | 10 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 12 | 0 |
| 1998 | 7 | 0 |
| 1999 | 9 | 0 |
| 2000 | 16 | 0 |
| 2001 | 3 | 1 |
| 2002 | 5 | 10 |
| 2003 | 5 | 5 |
| 2004 | 3 | 7 |
| 2005 | 2 | 3 |
| 2006 | 5 | 2 |
| 2007 | 3 | 7 |
| 2008 | 3 | 7 |
| 2009 | 5 | 3 |
| 2010 | 4 | 2 |
| 2011 | 4 | 7 |
| 2012 | 2 | 6 |
| 2013 | 7 | 5 |
| 2014 | 7 | 5 |
| 2015 | 4 | 21 |
| 2016 | 11 | 6 |
| 2017 | 6 | 3 |
| 2018 | 8 | 5 |
| 2019 | 5 | 2 |
| 2020 | 2 | 5 |
| 2021 | 1 | 3 |
| 2022 | 6 | 8 |
| 2023 | 1 | 5 |
| 2024 | 5 | 5 |
| 2025 | 7 | 9 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B21B 35/14Couplings, driving spindles, or spindle carriers specially adapted for, or specially arranged143
- B21B 35/02Drives for metal-rolling mills: for continuously-operating mills109
- B21B 35/12Toothed-wheel gearings specially adapted for metal-rolling mills45
- B21B 2035/005Hydraulic drive motorsIndexing code29
- B21B 35/06Drives for metal-rolling mills: for non-continuously-operating mills or for single stands21
- B21B 35/10Driving arrangements for rolls which have only a low-power drive12
Recent patents
- Forging press for hot forging of asymmetric to symmetric rail and process of forging thereof26 May 2026US RE50,897 E1Savita Nowar
- Reducer and/or calibrating rolling mill for rod-shaped bodies21 Apr 2026US 12,605,754 B2Danieli & C. Officine Meccaniche SpA
- Rotating electrical machine, set of such machines, and associated boat and rolling mill16 Sep 2025US 12,418,228 B2GE Energy Power Conversion Technology Limited
- Torque support for absorbing drive torques and roller arrangement with a torque support9 Sep 2025US 12,409,482 B2Matthews International Corporation
- Bending device, production facility for steel sheet pile, bending method, and production method for steel sheet pile24 Jun 2025US 12,337,364 B2Nippon Steel Corporation
- Reversible roughing mill for an aluminum or aluminum alloy product and related process13 Aug 2026US 2026/0233276 A1Danieli & C. Officine Meccaniche SpA
- Production and processing equipment for oxygen-free copper alloy thick strips and processing method thereof16 Jul 2026US 2026/0199946 A1Jinvi Copper Corporation, Tongling Nonferrous Metals Group Holding Co., Ltd.
- Asymmetric rolling apparatus and cassette device23 Apr 2026US 2026/0108927 A1Solum Advanced Materials 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
- Driving apparatus for vertical rolling mill44US 4,831,858 AFEC Co., Ltd. · 1989
- Cold roll forming apparatus proceding for the exchange of rolls as a unit25US 4,368,633 A1983
- Lamination process and apparatus for alkali metals or alloys thereof25US 7,513,136 B2Bathium Canada Inc. · 2009
- Hot-rolling mill and process for producing sheet metal24US 4,580,428 AVoest-Alpine Aktiengesellschaft · 1986
- Telescopic drive spindle assembly23US 4,945,745 ADavy McKee (Sheffield) Limited · 1990