B21B 3/00
Rolling materials of special alloys so far as the composition of the
Official title: Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences {; Rolling of aluminium, copper, zinc or other non-ferrous metals}(altering special metallurgical properties of alloys, other than structure consolidation or mechanical properties resulting therefrom C21D, C22F)
B21B3/00 (Rolling materials of special alloys so far as the composition of the) appears on 742 US grants and 758 published applications in this corpus.
Search patents in B21B- Granted patents
- 742
- Published applications
- 758
- Assignees
- 411
- Inventors
- 2,362
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 6 | 0 |
| 1978 | 7 | 0 |
| 1979 | 5 | 0 |
| 1980 | 12 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 11 | 0 |
| 1987 | 10 | 0 |
| 1988 | 9 | 0 |
| 1989 | 8 | 0 |
| 1990 | 7 | 0 |
| 1991 | 6 | 0 |
| 1992 | 13 | 0 |
| 1993 | 14 | 0 |
| 1994 | 10 | 0 |
| 1995 | 13 | 0 |
| 1996 | 14 | 0 |
| 1997 | 10 | 0 |
| 1998 | 14 | 0 |
| 1999 | 13 | 0 |
| 2000 | 11 | 0 |
| 2001 | 14 | 3 |
| 2002 | 13 | 17 |
| 2003 | 15 | 25 |
| 2004 | 14 | 27 |
| 2005 | 7 | 19 |
| 2006 | 6 | 14 |
| 2007 | 12 | 28 |
| 2008 | 6 | 22 |
| 2009 | 6 | 40 |
| 2010 | 16 | 23 |
| 2011 | 22 | 25 |
| 2012 | 22 | 28 |
| 2013 | 21 | 28 |
| 2014 | 8 | 38 |
| 2015 | 28 | 41 |
| 2016 | 23 | 42 |
| 2017 | 27 | 56 |
| 2018 | 25 | 50 |
| 2019 | 29 | 46 |
| 2020 | 46 | 35 |
| 2021 | 36 | 39 |
| 2022 | 28 | 23 |
| 2023 | 36 | 29 |
| 2024 | 21 | 18 |
| 2025 | 17 | 27 |
| 2026 | 16 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B21B 3/02Rolling special iron alloys230
- B21B 2003/001Aluminium or its alloysIndexing code208
- B21B 2003/005Copper or its alloysIndexing code91
- B21B 3/003Rolling non-ferrous metals immediately subsequent to continuous casting, i.e. in-line rolling72
- B21B 2003/006Powder metal alloysIndexing code5
- B21B 2003/008Zinc or its alloysIndexing code1
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)
- Methods of making an interventional medical device useful in performing treatment under magnetic resonance imaging1 Sep 2026US 12,721,933 B2Cook Medical Technologies LLC
- Surface-hardened, rotationally symmetrical workpiece, hardening method and hardening apparatus1 Sep 2026US 12,723,286 B2Walzengiesserei Coswig GmbH
- Aluminum-copper-lithium alloy thin sheets with improved toughness, and process for manufacturing an aluminum-copper-lithium alloy thin sheet30 Jun 2026US 12,668,863 B2Constellium Rolled Products Singen GmbH & Co. KG
- Internal oxidation starting temperature estimation device, internal oxide layer thickness estimation device, internal oxidation starting temperature estimation method, and program30 Jun 2026US 12,669,491 B2Nippon Steel Corporation
- Method of making thick aluminum alloy products8 Oct 2026US 2026/0308740 A1Arconic Technologies LLC
- Hot rolling equipment and hot rolling method17 Sep 2026US 2026/0273601 A1Nippon Steel Corporation
- Method and equipment for cooling on a reversing hot rolling mill3 Sep 2026US 2026/0257262 A1Constellium Muscle Shoals LLC
- Reversible roughing mill for an aluminum or aluminum alloy product and related process13 Aug 2026US 2026/0233276 A1Danieli & C. Officine Meccaniche SpA
- 5xxx aluminum alloy capable of refining mig weld grains and preparation method and application thereof13 Aug 2026US 2026/0234759 A1Chinalco Materials Application Research Institution Co., Ltd.
Most cited
By later US patents
- Method for reducing thickness of a titanium foil or thin strip element91US 5,226,989 ATexas Instruments Incorporated · 1993
- Method for reducing thickness of a high-strength low-ductility metal foil on thin strip element89US 5,222,282 ATexas Instruments Incorporated · 1993
- Method for making a copper core five-ply composite for cookware71US 6,267,830 B1Clad Metals LLC · 2001
- Metallic material having ultra-fine grain structure and method for its manufacture65US 5,080,727 ASumitomo Metal Industries, Ltd. · 1992
- Process for forming seamless tubing of zirconium or titanium alloys from welded precursors52US 4,690,716 AWestinghouse Electric Corp. · 1987