C22C 35/00
Master alloys for iron or steel
C22C35/00 (Master alloys for iron or steel) appears on 108 US grants and 43 published applications in this corpus.
Search patents in C22C- Granted patents
- 108
- Published applications
- 43
- Assignees
- 79
- Inventors
- 294
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 6 | 0 |
| 1978 | 7 | 0 |
| 1979 | 10 | 0 |
| 1980 | 7 | 0 |
| 1981 | 10 | 0 |
| 1982 | 4 | 0 |
| 1983 | 7 | 0 |
| 1984 | 8 | 0 |
| 1985 | 0 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 0 |
| 2011 | 1 | 4 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 3 | 4 |
| 2015 | 1 | 1 |
| 2016 | 2 | 3 |
| 2017 | 3 | 2 |
| 2018 | 2 | 2 |
| 2019 | 2 | 1 |
| 2020 | 4 | 3 |
| 2021 | 3 | 4 |
| 2022 | 1 | 5 |
| 2023 | 4 | 3 |
| 2024 | 3 | 3 |
| 2025 | 3 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Lightweight brake disc with maximized heat dissipation performance and manufacturing method thereof30 Jun 2026US 12,669,156 B2Pukyong National University Industry-University Cooperation Foundation
- Method for producing low-carbon ferromanganese18 Nov 2025US 12,473,605 B2Jfe Mineral & Alloy Company, Ltd.
- Materials, methods and techniques for surface alloying sand casted articles23 Sep 2025US 12,420,332 B2UWM Research Foundation, Inc.
- Silicon based alloy, method for the production thereof and use of such alloy6 May 2025US 12,291,764 B2Elkem ASA
- High strength and corrosion resistant ferrochrome alloy bulk and article comprising the same17 Dec 2024US 12,168,820 B2National Tsing Hua University
- A preparation method for a vanadium-nitrogen alloy25 Sep 2025US 2025/0297339 A1Pangang Group Panazhihua Iron & Steel Research Institute Co., Ltd.
- Corrosion-resistant steel bar and production method therefor3 Jul 2025US 2025/0215542 A1Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd (Cn)
- Spherical iron alloy powder material preparation method therefor, and use thereof9 Jan 2025US 2025/0010363 A1
- Method and system for producing low carbon ferroalloy from chromite ore12 Sep 2024US 2024/0301530 A1MM Metals USA, LLC
- Low-cost high-coercivity lace-rich neodymium-iron-boron permanent magnet, and preparation method therefor and use thereof15 Aug 2024US 2024/0274333 A1Nantong Zhenghai Magnet Co., Ltd.
Most cited
By later US patents
- Method of reducing metal oxide in a rotary hearth furnace heated by an oxidizing flame31US 5,567,224 AArmco Inc. · 1996
- Cast iron14US 4,086,086 ABritish Cast Iron Research Association · 1978
- Ferroalloy for inoculation of spherulitic graphite irons14US 5,733,502 APechiney Electrometallurgie · 1998
- Process for the preparation of silicon or ferrosilicon12US 4,269,620 AKemaNord AB · 1981
- Process for the production of ferro-magnesium and the like11US 4,147,533 A1979