C21C 5/565
Preheating of scrap
Official title: {Preheating of scrap}
C21C5/565 (Preheating of scrap) appears on 134 US grants and 66 published applications in this corpus.
Search patents in C21C- Granted patents
- 134
- Published applications
- 66
- Assignees
- 81
- Inventors
- 268
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 6 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 7 | 0 |
| 1987 | 6 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 3 |
| 2003 | 2 | 3 |
| 2004 | 3 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 1 | 2 |
| 2008 | 1 | 2 |
| 2009 | 1 | 3 |
| 2010 | 4 | 3 |
| 2011 | 4 | 2 |
| 2012 | 2 | 6 |
| 2013 | 1 | 3 |
| 2014 | 0 | 2 |
| 2015 | 3 | 6 |
| 2016 | 2 | 2 |
| 2017 | 3 | 4 |
| 2018 | 4 | 1 |
| 2019 | 2 | 1 |
| 2020 | 5 | 4 |
| 2021 | 2 | 1 |
| 2022 | 1 | 2 |
| 2023 | 4 | 5 |
| 2024 | 5 | 6 |
| 2025 | 2 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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 and plant for preheating a metal charge fed in continuous to an electric melting furnace14 Jan 2025US 12,195,815 B2
- Scrap dryer and/or scrap preheater30 Jul 2024US 12,050,060 B2SMS group GmbH
- Method and system for producing low carbon ferroalloy from chromite ore4 Jun 2024US 12,000,017 B2MM Metals USA, LLC
- Method for producing molten iron6 Aug 2026US 2026/0226569 A1Jfe Steel Corporation
- Method for producing molten iron using electric furnace12 Jun 2025US 2025/0188553 A1Jfe Steel Corporation
- Method of producing molten iron2 Jan 2025US 2025/0003684 A1Jfe Steel Corporation
- Method and system for producing low carbon ferroalloy from chromite ore12 Sep 2024US 2024/0301530 A1MM Metals USA, LLC
- Metal oxide material reduction means18 Apr 2024US 2024/0124948 A1Luossavaara-Kiirunavaara AB
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
- Smelting plant with removable shaft-like charging material preheater26US 5,153,894 AFuchs Technology AG · 1992
- Continuous steelmaking and casting19US 4,456,476 A1984
- Continuous steelmaking and casting18US 4,615,511 A1986