C21B 2400/00
Treatment of slags originating from iron or steel processes
C21B2400/00 (Treatment of slags originating from iron or steel processes) appears on 271 US grants and 178 published applications in this corpus.
Search patents in C21B- Granted patents
- 271
- Published applications
- 178
- Assignees
- 211
- Inventors
- 696
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 12 | 0 |
| 1978 | 10 | 0 |
| 1979 | 14 | 0 |
| 1980 | 8 | 0 |
| 1981 | 9 | 0 |
| 1982 | 10 | 0 |
| 1983 | 7 | 0 |
| 1984 | 3 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 3 | 0 |
| 1999 | 9 | 0 |
| 2000 | 4 | 0 |
| 2001 | 11 | 2 |
| 2002 | 5 | 6 |
| 2003 | 5 | 5 |
| 2004 | 2 | 4 |
| 2005 | 6 | 4 |
| 2006 | 0 | 3 |
| 2007 | 2 | 6 |
| 2008 | 3 | 5 |
| 2009 | 4 | 7 |
| 2010 | 6 | 7 |
| 2011 | 4 | 4 |
| 2012 | 2 | 5 |
| 2013 | 4 | 11 |
| 2014 | 4 | 7 |
| 2015 | 9 | 8 |
| 2016 | 3 | 4 |
| 2017 | 6 | 3 |
| 2018 | 2 | 7 |
| 2019 | 5 | 5 |
| 2020 | 8 | 12 |
| 2021 | 3 | 7 |
| 2022 | 4 | 8 |
| 2023 | 8 | 12 |
| 2024 | 7 | 16 |
| 2025 | 6 | 10 |
| 2026 | 8 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for producing liquid pig iron from a DRI product25 Aug 2026US 12,716,105 B2SMS group GmbH
- Cooling apparatus23 Jun 2026US 12,663,213 B2Material Handling Technology S.R.L.
- Method for the cooling and heat recovery from materials at very high temperature9 Jun 2026US 12,649,690 B2Cicsa S.R.L.
- Integrated drying process and device for dry granulated slag and sludge2 Jun 2026US 12,644,161 B2Baoshan Iron & Steel Co., Ltd.
- Process and system for the production of iron nuggets12 May 2026US 12,624,406 B2Carbontec Energy Corporation
- Systematic carbon emissions reduction method for whole process of production and casting3 Sep 2026US 2026/0258513 A1Jiqing Low Carbon Technology (Qinhuangdao) Co., Ltd.
- Method for refining metal27 Aug 2026US 2026/0250795 A1Ferrum Technologies FlexCo
- Comprehensive utilization method for steel making slag13 Aug 2026US 2026/0234753 A1Yuanchu Technology (Beijing) Co., Ltd.
- Melting furnace13 Aug 2026US 2026/0235363 A1Kubota Corporation
- Process and plant for slag treatment23 Jul 2026US 2026/0209874 A1Danieli & C. Officine Meccaniche SpA
Most cited
By later US patents
- Process for solidifying aqueous wastes and products thereof71US 4,124,405 APEC-Engineering Societe Anonyme · 1978
- 3D printing shrinkage compensation using radial and angular layer perimeter point information44US 9,886,526 B2University of Southern California · 2018
- Cement composition38US 6,840,996 B2Denki Kagaku Kogyo Kabushiki Kaisha · 2005
- Method for producing droplets30US 5,609,919 AAltamat Inc. · 1997
- Process for producing fibers with a specially fixed size from melts24US 4,374,074 AItoh Metal Abrasive Co., Ltd. · 1983