C21D 9/0012
Rolls
Official title: {Rolls; Roll arrangements}
C21D9/0012 (Rolls) appears on 39 US grants and 46 published applications in this corpus.
Search patents in C21D- Granted patents
- 39
- Published applications
- 46
- Assignees
- 36
- Inventors
- 129
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 1 | 2 |
| 2008 | 1 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 2 |
| 2016 | 1 | 2 |
| 2017 | 1 | 2 |
| 2018 | 2 | 1 |
| 2019 | 1 | 3 |
| 2020 | 2 | 1 |
| 2021 | 1 | 6 |
| 2022 | 3 | 7 |
| 2023 | 3 | 5 |
| 2024 | 3 | 2 |
| 2025 | 3 | 4 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Heat treatment method for amorphous alloy ribbon and heat treatment apparatus for amorphous alloy ribbon21 Jul 2026US 12,686,897 B2Proterial, Ltd.
- High strength steel for structure with excellent corrosion resistance and manufacturing method for same16 Jun 2026US 12,655,491 B2Posco
- Device for heating steel products9 Jun 2026US 12,649,956 B2Danieli & C. Officine Meccaniche SpA
- Heat treatment apparatus24 Feb 2026US 12,559,811 B2Noritake Co., Limited
- Hearth roll for continuous annealing furnace18 Nov 2025US 12,473,606 B2Nippon Steel Corporation
- Hearth roll for continuous annealing furnace18 Jun 2026US 2026/0168046 A1Nippon Steel Corporation
- Continuous heat treatment system for high-pressure fluid storage container30 Oct 2025US 2025/0334334 A1Aether Ct Co., Ltd.
- Induction heating method and induction heating apparatus for ring-shaped member, manufacturing method for ring-shaped member, manufacturing method for bearing, manufacturing method for vehicle, and manufacturing method for mechanical device28 Aug 2025US 2025/0271034 A1Nsk Ltd.
- Hearth roll for continuous annealing furnace14 Aug 2025US 2025/0257417 A1Nippon Steel Corporation
- Quenching apparatus, continuous annealing facility, quenching method, method for manufacturing steel sheet, and method for manufacturing coated steel sheet24 Apr 2025US 2025/0129445 A1Jfe Steel Corporation
Most cited
By later US patents
- Roll for use in heat treating furnace and method of producing the same21US 5,070,587 ATocalo Co., Ltd. · 1991
- Roll for use in heat treating furnace and method of producing the same16US 5,161,306 ATocalo Co., Ltd. · 1992
- Dry roll furnace arrangement11US 5,833,455 ABricmont, Inc. · 1998
- Intermetallic alloys for use in the processing of steel6US 5,824,166 AMetallamics, Inc. · 1998
- Furnace roller and cast tire therefor5US 6,435,867 B1Bricmont, Inc. · 2002