C21C 7/0006
Adding metallic additives
Official title: {Adding metallic additives}
C21C7/0006 (Adding metallic additives) appears on 159 US grants and 182 published applications in this corpus.
Search patents in C21C- Granted patents
- 159
- Published applications
- 182
- Assignees
- 136
- Inventors
- 562
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 2 | 0 |
| 1983 | 6 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 4 | 5 |
| 2004 | 3 | 4 |
| 2005 | 1 | 0 |
| 2006 | 0 | 4 |
| 2007 | 2 | 5 |
| 2008 | 2 | 10 |
| 2009 | 4 | 8 |
| 2010 | 2 | 7 |
| 2011 | 4 | 12 |
| 2012 | 7 | 6 |
| 2013 | 5 | 4 |
| 2014 | 5 | 9 |
| 2015 | 6 | 4 |
| 2016 | 2 | 6 |
| 2017 | 6 | 7 |
| 2018 | 2 | 5 |
| 2019 | 8 | 4 |
| 2020 | 0 | 2 |
| 2021 | 5 | 5 |
| 2022 | 2 | 9 |
| 2023 | 6 | 12 |
| 2024 | 6 | 15 |
| 2025 | 18 | 27 |
| 2026 | 6 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Direct current electric arc furnace22 Sep 2026US 12,742,218 B2Masercata Oy
- Non-oriented electrical steel sheet, method for producing same, and hot-rolled steel sheet22 Sep 2026US 12,742,223 B2Nippon Steel Corporation
- Ultra-high phosphorus molten iron low-cost smelting method for polar steel21 Apr 2026US 12,606,877 B2Laiwu Steel Yinshan Section Co., Ltd.
- Production method for non-oriented silicon steel and non-oriented silicon steel31 Mar 2026US 12,590,351 B2Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd (Cn) China
- Steel sheet and high strength press hardened steel part having excellent bending and method of manufacturing the same17 Mar 2026US 12,577,630 B1ArcelorMittal
- Method for deoxidation refining of molten steel, method for producing steel material, and steel material thereof3 Sep 2026US 2026/0258518 A1Jfe Steel Corporation
- Steel sheet and high strength press hardened steel part having excellent bending anisotropy and method of manufacturing the same20 Aug 2026US 2026/0242906 A1
- System to produce green steel through electric arc furnace with very low ghg emission intensity16 Jul 2026US 2026/0201487 A1Saarloha Advanced Materials Private Limited
- Low-sulfur granulated metallic units, and associated systems, devices, and methods14 May 2026US 2026/0131376 A1Suncoke Technology and Development LLC
- Treating cooling water in iron production facilities, and associated systems, devices, and methods26 Feb 2026US 2026/0054312 A1Suncoke Technology and Development LLC
Most cited
By later US patents
- Method for producing titanium-bearing microalloyed high-strength low-alloy steel34US 6,669,789 B1Nucor Corporation · 2003
- Method of introducing addition agents into a metallurgical operation25US 4,362,559 AAmerican Cyanamid Company · 1982
- Integrated process for hydrotreating heavy oil, then manufacturing an alloy or steel using a carbon-based catalyst22US 5,466,363 AMobil Oil Corporation · 1995
- Method for inoculating or refining metal melts16US 4,286,646 AGoetze AG · 1981
- Varnish-bonded carbon-coated magnesium and aluminum granules14US 4,541,867 AAmax Inc. · 1985