B21B 31/04
With tie rods in frameless stands
Official title: with tie rods {in frameless stands}, e.g. prestressed tie rods
B21B31/04 (With tie rods in frameless stands) appears on 64 US grants and 11 published applications in this corpus.
Search patents in B21B- Granted patents
- 64
- Published applications
- 11
- Assignees
- 41
- Inventors
- 129
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 5 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 2 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multistage rolling mill and method of changing divided backing bearing assembled shafts in multistage rolling mill10 Feb 2026US 12,544,815 B2Sendzimir Japan, Ltd.
- Roll nip regulation device and method13 Oct 2015US 9,156,071 B2Saueressig GmbH + Co. KG
- Split housing cluster mill designed for temper and cold rolling14 Apr 2015US 9,003,854 B2I2S, LLC
- Prestressed rolling mill housing assembly with improved operational features6 Mar 2012US 8,127,584 B2I2S, LLC
- Prestressed rolling mill housing assembly with improved operational features3 Aug 2010US 7,765,844 B2Intergrated Industrial Systems, Inc.
- Multistage rolling mill and method of changing divided backing bearing assembled shafts in multistage rolling mill30 Jun 2022US 2022/0203416 A1Sendzimir Japan, Ltd.
- Roll arrangement having a device for regulating the roll nip, and method for regulating the roll nip in a roll arrangement24 Apr 2014US 2014/0109642 A1Saueressig GmbH + Co. KG
- Split Housing Cluster Mill Designed for Temper and Cold Rolling20 Dec 2012US 2012/0318030 A1I2S, LLC
- Prestressed Rolling Mill Housing Assembly With Improved Operational Features7 Oct 2010US 2010/0251793 A1I2S, LLC
- Prestressed Rolling Mill Housing Assembley With Improved Operational Features25 Jun 2009US 2009/0158802 A1Intergrated Industrial Systems, Inc.
Most cited
By later US patents
- Universal rolling mill stand35US 6,305,205 B1SMS Schloemann-Siemag Aktiengesellschaft · 2001
- Apparatus for the plastic working of material16US 3,938,362 AAB Metalform · 1976
- Housingless beam mill stand16US 4,557,130 ADavy McKee (Sheffield) Limited · 1985
- Control system with pilot controller, especially for a roll stand16US 5,353,217 ASiemens Aktiengesellschaft · 1994
- Prestressed universal rolling mill15US 3,948,072 ANippon Kokan Kabushiki Kaisha · 1976