F27D 13/002
Preheating scrap
Official title: {Preheating scrap}
F27D13/002 (Preheating scrap) appears on 142 US grants and 62 published applications in this corpus.
Search patents in F27D- Granted patents
- 142
- Published applications
- 62
- Assignees
- 80
- Inventors
- 277
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 7 | 0 |
| 1984 | 3 | 0 |
| 1985 | 6 | 0 |
| 1986 | 7 | 0 |
| 1987 | 9 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 7 | 0 |
| 1996 | 7 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 7 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 1 |
| 2003 | 2 | 2 |
| 2004 | 2 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 4 | 2 |
| 2011 | 2 | 0 |
| 2012 | 0 | 5 |
| 2013 | 0 | 5 |
| 2014 | 1 | 2 |
| 2015 | 4 | 8 |
| 2016 | 2 | 3 |
| 2017 | 5 | 5 |
| 2018 | 6 | 3 |
| 2019 | 3 | 1 |
| 2020 | 3 | 3 |
| 2021 | 3 | 2 |
| 2022 | 2 | 4 |
| 2023 | 3 | 3 |
| 2024 | 4 | 3 |
| 2025 | 2 | 3 |
| 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
- High-temperature flue gas recovery apparatus for melting furnace26 Mar 2024US 11,940,216 B1Zhejiang Hailiang Co., Ltd.
- Scrap dryer and pre-heater apparatus for electric arc furnace1 Oct 2026US 2026/0298541 A1SSAB Enterprises, LLC
- Method for producing molten iron using electric furnace12 Jun 2025US 2025/0188553 A1Jfe Steel Corporation
- Stack melting apparatus5 Jun 2025US 2025/0180292 A1
- Method of producing molten iron2 Jan 2025US 2025/0003684 A1Jfe Steel Corporation
- Two-chamber furnance for aluminum recycling11 Apr 2024US 2024/0118030 A1
Most cited
By later US patents
- Process for removing volatiles from metal28US 4,784,603 AAluminum Company of America · 1988
- Heating and/or drying apparatus27US 4,784,216 ACMI Corporation · 1988
- Smelting plant with removable shaft-like charging material preheater26US 5,153,894 AFuchs Technology AG · 1992
- High efficiency aluminum scrap melter and process therefor22US 4,010,935 AAlumax Inc. · 1977
- Furnace system for and method of melting and preheating metal20US 4,021,192 AReynolds Metals Company · 1977