C21C 5/36
Processes yielding slags of special composition
C21C5/36 (Processes yielding slags of special composition) appears on 115 US grants and 63 published applications in this corpus.
Search patents in C21C- Granted patents
- 115
- Published applications
- 63
- Assignees
- 85
- Inventors
- 303
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 7 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 0 |
| 2002 | 3 | 2 |
| 2003 | 3 | 3 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 1 | 1 |
| 2007 | 1 | 3 |
| 2008 | 1 | 1 |
| 2009 | 0 | 2 |
| 2010 | 2 | 2 |
| 2011 | 2 | 3 |
| 2012 | 2 | 1 |
| 2013 | 1 | 1 |
| 2014 | 3 | 2 |
| 2015 | 0 | 5 |
| 2016 | 3 | 1 |
| 2017 | 3 | 3 |
| 2018 | 1 | 0 |
| 2019 | 5 | 6 |
| 2020 | 2 | 1 |
| 2021 | 1 | 3 |
| 2022 | 0 | 5 |
| 2023 | 2 | 5 |
| 2024 | 1 | 9 |
| 2025 | 5 | 0 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for producing chromium-containing molten steel16 Jun 2026US 12,655,488 B2Jfe 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.
- 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
- Method for producing low-carbon ferromanganese18 Nov 2025US 12,473,605 B2Jfe Mineral & Alloy Company, Ltd.
- Method for refining metal27 Aug 2026US 2026/0250795 A1Ferrum Technologies FlexCo
- Method for producing slag having a desired quality14 Nov 2024US 2024/0376559 A1ThyssenKrupp Steel Europe AG
- A method for processing iron ore to obtain steel19 Sep 2024US 2024/0309475 A1Metso Metals Oy
- Process for manufacturing a slag conditioning agent for steel desulfurization25 Jul 2024US 2024/0247330 A1S. A. Lhoist Recherche et Developpement
- Pyrometallurgical Method for Recycling Shredded Material of Waste from the Production of New and Defective or End-of-Life Batteries for Electric Vehicles or Portable Li-Ion Batteries13 Jun 2024US 2024/0191316 A1Eco'ring
Most cited
By later US patents
- Process for reclaiming combustion residues61US 6,039,787 A"Holderbahk" Financiere Glarus AG · 2000
- Apparatus for electric steelmaking43US 5,714,113 AAmerican Combustion, Inc. · 1998
- Method and apparatus for measuring slag foaming using microwave lever meter41US 4,210,023 ASumitomo Metal Industries, Ltd. · 1980
- Method for electric steelmaking31US 5,599,375 AAmerican Combustion, Inc. · 1997
- Direct smelting process30US 6,602,321 B2Technological Resources Pty. Limited · 2003