C21C 5/54
Processes yielding slags of special composition
C21C5/54 (Processes yielding slags of special composition) appears on 77 US grants and 95 published applications in this corpus.
Search patents in C21C- Granted patents
- 77
- Published applications
- 95
- Assignees
- 65
- Inventors
- 216
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 6 | 2 |
| 2003 | 2 | 5 |
| 2004 | 2 | 0 |
| 2005 | 2 | 2 |
| 2006 | 1 | 5 |
| 2007 | 1 | 4 |
| 2008 | 1 | 2 |
| 2009 | 0 | 4 |
| 2010 | 6 | 4 |
| 2011 | 3 | 10 |
| 2012 | 4 | 3 |
| 2013 | 4 | 8 |
| 2014 | 4 | 2 |
| 2015 | 1 | 4 |
| 2016 | 3 | 1 |
| 2017 | 2 | 4 |
| 2018 | 2 | 3 |
| 2019 | 5 | 0 |
| 2020 | 0 | 6 |
| 2021 | 1 | 1 |
| 2022 | 3 | 9 |
| 2023 | 1 | 4 |
| 2024 | 3 | 7 |
| 2025 | 7 | 2 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for producing chromium-containing molten steel16 Jun 2026US 12,655,488 B2Jfe Steel Corporation
- Method for manufacturing low-phosphorus molten steel9 Jun 2026US 12,649,955 B2Jfe Steel Corporation
- Process for producing raw steel and aggregate for production thereof10 Mar 2026US 12,571,062 B2ThyssenKrupp Steel Europe AG
- Method for manufacturing molten iron with electric arc furnace9 Dec 2025US 12,492,439 B2Jfe Steel Corporation
- Method for monitoring a steelmaking process and associated computer program18 Nov 2025US 12,473,604 B2ArcelorMittal
- Composition of charcoal for use in production of steel, process of foaming slag in the production of steel in electric arc furnaces and use of a composition of charcoal3 Sep 2026US 2026/0258517 A1Vallourec SoluçõEs Tubulares Do Brasil S.A.
- Method for refining metal27 Aug 2026US 2026/0250795 A1Ferrum Technologies FlexCo
- Method for recycling chromium oxide and forming chromium-alloy steel5 Jun 2025US 2025/0179598 A1Saudi Iron and Steel Company (Hadeed)
- Process for producing clean steel with a low nitrogen content using an electric arc furnace and a degassing system13 Mar 2025US 2025/0083218 A1Ternium México, S.A. de C.V.
- Molten pig iron manufacturing method7 Nov 2024US 2024/0368716 A1Nippon Steel Corporation
Most cited
By later US patents
- Method for metal melting, refining and processing27US 6,372,010 B1Process Technology International, Inc. · 2002
- Composition and process to create foaming slag cover for molten steel10US 4,528,035 AMetro Materials Corporation · 1985
- Method and composition for foaming slag in electric arc furnace8US 4,447,265 A1984
- Process and apparatus for automatically controlling slag foaming8US 6,544,314 B2Specialty Minerals (Michigan) Inc. · 2003
- Arc steelmaking6US 4,060,406 AFoseco International Limited · 1977