B21B 2267/26
Hardness of the roll surface
B21B2267/26 (Hardness of the roll surface) appears on 12 US grants and 19 published applications in this corpus.
Search patents in B21B- Granted patents
- 12
- Published applications
- 19
- Assignees
- 10
- Inventors
- 20
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 2 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 8 |
| 2024 | 1 | 4 |
| 2025 | 1 | 1 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydraulic devices including coated surfaces25 Aug 2026US 12,716,119 B2Maxterial, Inc.
- Wear-resistant member26 May 2026US 12,638,050 B2NGK Insulators, Ltd.
- Rollers and work rolls including surface coatings6 Jan 2026US 12,516,403 B2Maxterial, Inc.
- Pneumatic devices including surface coatings15 Jul 2025US 12,359,289 B2Maxterial, Inc.
- Hydraulic devices including coated surfaces10 Dec 2024US 12,163,208 B2Maxterial, Inc.
- Pneumatic devices including surface coatings9 Jul 2026US 2026/0193747 A1Maxterial, Inc.
- Hydraulic devices including coated surfaces21 Aug 2025US 2025/0263820 A1Maxterial, Inc.
- Processes for producing coated surfaces, coatings and articles using them12 Dec 2024US 2024/0410072 A1Maxterial, Inc.
- Articles including surface coatings on external surfaces, internal surfaces or both12 Dec 2024US 2024/0410073 A1Maxterial, Inc.
- Coated surfaces, coatings and articles using them7 Nov 2024US 2024/0368767 A1Maxterial, Inc.
Most cited
By later US patents
- Hard-surfaced cast iron articles and method and apparatus for manufacturing the same14US 4,452,647 AValmet Corporation · 1984
- Continous spiral motion and roll bending system for rolling mills5US 6,029,491 ADanieli United, Inc. · 2000
- Continuous spiral motion system for rolling mills4US 5,970,771 ADanieli United, Inc. · 1999
- Apparatus for hot-rolling non-ferrous metals2US 4,106,319 ASouthwire Company · 1978