C21C 5/562
Starting from scrap
Official title: {starting from scrap}
C21C5/562 (Starting from scrap) appears on 235 US grants and 120 published applications in this corpus.
Search patents in C21C- Granted patents
- 235
- Published applications
- 120
- Assignees
- 151
- Inventors
- 545
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 6 | 0 |
| 1984 | 6 | 0 |
| 1985 | 8 | 0 |
| 1986 | 9 | 0 |
| 1987 | 7 | 0 |
| 1988 | 7 | 0 |
| 1989 | 6 | 0 |
| 1990 | 9 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 8 | 0 |
| 1996 | 8 | 0 |
| 1997 | 5 | 0 |
| 1998 | 0 | 0 |
| 1999 | 6 | 0 |
| 2000 | 8 | 0 |
| 2001 | 6 | 2 |
| 2002 | 6 | 5 |
| 2003 | 5 | 3 |
| 2004 | 4 | 1 |
| 2005 | 1 | 3 |
| 2006 | 0 | 4 |
| 2007 | 3 | 6 |
| 2008 | 1 | 4 |
| 2009 | 3 | 6 |
| 2010 | 6 | 5 |
| 2011 | 4 | 5 |
| 2012 | 3 | 7 |
| 2013 | 3 | 5 |
| 2014 | 2 | 2 |
| 2015 | 4 | 6 |
| 2016 | 2 | 5 |
| 2017 | 4 | 5 |
| 2018 | 4 | 2 |
| 2019 | 4 | 1 |
| 2020 | 6 | 4 |
| 2021 | 2 | 2 |
| 2022 | 1 | 5 |
| 2023 | 7 | 9 |
| 2024 | 6 | 8 |
| 2025 | 3 | 5 |
| 2026 | 3 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Joint regulation method of material flow, energy flow, and carbon emission flow in long-process iron and steel enterprises10 Mar 2026US 12,571,060 B2Northeast Electric Power University
- Process for producing raw steel and aggregate for production thereof10 Mar 2026US 12,571,062 B2ThyssenKrupp Steel Europe AG
- Method of producing molten iron using electric furnace including video device3 Mar 2026US 12,566,029 B2Jfe Steel Corporation
- Process and plant for preheating a metal charge fed in continuous to an electric melting furnace15 Jul 2025US 12,359,873 B2
- Process for producing clean steel products with a low nitrogen content using an electric arc furnace and a degassing system13 May 2025US 12,296,379 B2Ternium México, S.A. de C.V.
- Novel process for the smelting of a metalliferous feedstock material yielding reduced carbon emissions1 Oct 2026US 2026/0297698 A1Metix (Proprietary) Limited
- A bainite seamless steel pipe and manufacturing method therefor3 Sep 2026US 2026/0258534 A1Baoshan Iron & Steel Co., Ltd.
- Method for refining metal27 Aug 2026US 2026/0250795 A1Ferrum Technologies FlexCo
- Method for producing molten iron6 Aug 2026US 2026/0226569 A1Jfe Steel Corporation
- System to produce green steel through electric arc furnace with very low ghg emission intensity16 Jul 2026US 2026/0201487 A1Saarloha Advanced Materials Private Limited
Most cited
By later US patents
- Process for the production of steel from fine ore hot briquetted after fluidized bed reduction49US 4,946,498 A1990
- Metallurgical melting and refining unit33US 4,389,043 AKorf Industrie und Handel GmbH und Co KG · 1983
- Process for post combustion26US 5,051,127 AKlockner CRA Patent GmbH · 1991
- Smelting plant with removable shaft-like charging material preheater26US 5,153,894 AFuchs Technology AG · 1992
- Method and apparatus for the continuous melting of scrap24US 4,786,321 AFried. Krupp Gesellschaft mit beschrankter Haftung · 1988