B21B 27/00
Rolls, roll alloys or roll fabrication
Official title: Rolls, {roll alloys or roll fabrication}(shape of working surfaces required by special processes B21B1/00); Lubricating, cooling or heating rolls while in use
B21B27/00 (Rolls, roll alloys or roll fabrication) appears on 988 US grants and 616 published applications in this corpus.
Search patents in B21B- Granted patents
- 988
- Published applications
- 616
- Assignees
- 464
- Inventors
- 2,177
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 16 | 0 |
| 1978 | 14 | 0 |
| 1979 | 10 | 0 |
| 1980 | 11 | 0 |
| 1981 | 11 | 0 |
| 1982 | 6 | 0 |
| 1983 | 13 | 0 |
| 1984 | 13 | 0 |
| 1985 | 21 | 0 |
| 1986 | 17 | 0 |
| 1987 | 21 | 0 |
| 1988 | 19 | 0 |
| 1989 | 32 | 0 |
| 1990 | 28 | 0 |
| 1991 | 20 | 0 |
| 1992 | 28 | 0 |
| 1993 | 21 | 0 |
| 1994 | 22 | 0 |
| 1995 | 28 | 0 |
| 1996 | 30 | 0 |
| 1997 | 30 | 0 |
| 1998 | 27 | 0 |
| 1999 | 25 | 0 |
| 2000 | 30 | 0 |
| 2001 | 28 | 9 |
| 2002 | 21 | 18 |
| 2003 | 12 | 21 |
| 2004 | 9 | 28 |
| 2005 | 10 | 21 |
| 2006 | 14 | 16 |
| 2007 | 17 | 18 |
| 2008 | 8 | 19 |
| 2009 | 10 | 21 |
| 2010 | 8 | 27 |
| 2011 | 12 | 24 |
| 2012 | 20 | 13 |
| 2013 | 17 | 17 |
| 2014 | 13 | 31 |
| 2015 | 18 | 54 |
| 2016 | 28 | 18 |
| 2017 | 35 | 42 |
| 2018 | 21 | 23 |
| 2019 | 24 | 26 |
| 2020 | 27 | 31 |
| 2021 | 23 | 28 |
| 2022 | 24 | 25 |
| 2023 | 25 | 29 |
| 2024 | 22 | 27 |
| 2025 | 17 | 20 |
| 2026 | 14 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Manufacturing method for tinplate6 Oct 2026US 12,752,324 B2Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd (Cn)
- Forged steel roll for cold rolling6 Oct 2026US 12,752,325 B2Nippon Steel Corporation
- Hydraulic devices including coated surfaces25 Aug 2026US 12,716,119 B2Maxterial, Inc.
- High-strength galvannealed steel sheet having excellent powdering resistance and manufacturing method therefor18 Aug 2026US 12,709,791 B2Posco
- Method for preheating a working roll for rolling30 Jun 2026US 12,667,875 B2Constellium Issoire
- Eight-high rolling mill, tandem rolling mill, and modification method for rolling mill10 Sep 2026US 2026/0264126 A1Sendzimir Japan, Ltd.
- Temperature control device and method for heating work rolls13 Aug 2026US 2026/0233275 A1Achenbach Buschhutten GmbH
- Forged steel roll13 Aug 2026US 2026/0234772 A1Nippon Steel Corporation
- Pneumatic devices including surface coatings9 Jul 2026US 2026/0193747 A1Maxterial, Inc.
- Roller for rolling electrode sheet comprising hard layer formed by physical vapor deposition and manufacturing method of the same4 Jun 2026US 2026/0151813 A1J&L Tech Co., Ltd.
Most cited
By later US patents
- Wear-resistant ceramic, cermet or metallic embossing surfaces, methods for producing same, methods of embossing articles by same and novel embossed articles112US 4,787,837 AUnion Carbide Corporation · 1988
- Isothermal metal forming apparatus89US 3,988,913 AInternational Harvester Company · 1976
- Rotary die cutting system and method for sheet material78US 5,388,490 A1995
- Method of providing textures on material by rolling61US 5,025,547 AAluminum Company of America · 1991
- Method and device for manufacturing cold rolled metal sheets or strips and metal sheets or strips obtained52US 5,789,066 ASidmar N.V. · 1998