B21B 28/00
Maintaining rolls or rolling equipment in effective condition
Official title: Maintaining rolls or rolling equipment in effective condition (lubricating, cooling or heating rolls while in use B21B27/06)
B21B28/00 (Maintaining rolls or rolling equipment in effective condition) appears on 140 US grants and 76 published applications in this corpus.
Search patents in B21B- Granted patents
- 140
- Published applications
- 76
- Assignees
- 86
- Inventors
- 334
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 6 | 0 |
| 1996 | 4 | 0 |
| 1997 | 9 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 9 | 2 |
| 2002 | 4 | 5 |
| 2003 | 3 | 2 |
| 2004 | 4 | 4 |
| 2005 | 1 | 1 |
| 2006 | 2 | 1 |
| 2007 | 1 | 3 |
| 2008 | 1 | 2 |
| 2009 | 0 | 2 |
| 2010 | 1 | 5 |
| 2011 | 4 | 2 |
| 2012 | 3 | 0 |
| 2013 | 1 | 8 |
| 2014 | 1 | 6 |
| 2015 | 1 | 5 |
| 2016 | 6 | 4 |
| 2017 | 1 | 5 |
| 2018 | 3 | 3 |
| 2019 | 6 | 3 |
| 2020 | 5 | 0 |
| 2021 | 1 | 4 |
| 2022 | 0 | 1 |
| 2023 | 4 | 3 |
| 2024 | 2 | 1 |
| 2025 | 2 | 4 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Reduction of surface defects during finish rolling of hot strip14 Oct 2025US 12,440,878 B2Primetals Technologies Austria GmbH
- System and method for improving roll roundness27 May 2025US 12,311,423 B2
- Peelable resealable membrane for containers24 Dec 2024US 12,172,798 B2Sonoco Development, Inc.
- Roller cleaning method and roller cleaning machine2 Apr 2024US 11,945,008 B2Hydro Aluminum Rolled Products GmbH
- Cleaning apparatus and cleaning method for press rolls for electrodes14 Feb 2023US 11,577,281 B2LG Energy Solution, Ltd.
- Abnormal-vibration-predicting method for roll grinder, rolling-roll-grinding method, metal-strip-rolling method, abnormal-vibration-predicting device for roll grinder, and roll-grinding apparatus30 Oct 2025US 2025/0332686 A1Jfe Steel Corporation
- Machine and method for carrying out surface treatments onto rolling mill rolls8 May 2025US 2025/0144687 A1Tenova S. P. A.
- Peelable resealable membrane for containers6 Mar 2025US 2025/0073766 A1Sonoco Development, Inc.
- Apparatus and process for surface processing of cylindrical bodies, in particular rolling cylinders30 Jan 2025US 2025/0033101 A1Tenova S. P. A.
- Apparatuses and methods for spot polishing a metal sheet or plate leveler18 Jul 2024US 2024/0238855 A1SSAB Enterprises, LLC
Most cited
By later US patents
- Rolling mill equipped with on-line roll grinding system and grinding wheel101US 6,306,007 B1Hitachi, Ltd. · 2001
- Grinding wheel for roll grinding and method of roll grinding98US 8,070,556 B2Diamond Innovations, Inc. · 2011
- Method and apparatus for cooling rolling mill rolls and flat rolled products39US 5,212,975 AInternational Rolling Mill Consultants, Inc. · 1993
- Hot strip rolling plant and method directly combined with continuous casting36US 5,634,257 AHitachi, Ltd. · 1997
- Low profile roll cleaning apparatus and self aligning bearing used therein27US 4,887,329 A1989