C22B 1/216
In rotary furnaces
Official title: in rotary furnaces
C22B1/216 (In rotary furnaces) appears on 19 US grants and 24 published applications in this corpus.
Search patents in C22B- Granted patents
- 19
- Published applications
- 24
- Assignees
- 31
- Inventors
- 86
- Latest grant
- 16 May 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 2 | 4 |
| 2012 | 1 | 1 |
| 2013 | 2 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 2 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 2 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 4 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for removing phosphorus from phosphorus-containing substance16 May 2023US 11,649,514 B2Jfe Steel Corporation
- Device for the improvement of crude pellets and pelletizing process28 Feb 2017US 9,580,769 B2Vale S.A.
- Reclaiming and inhibiting activation of DRI fines2 Jun 2015US 9,045,809 B2Nu-Iron Technology, LLC
- Direct processing of metallic ore concentrates into ferroalloys1 Oct 2013US 8,545,593 B2Cardero Resource Corporation
- Batchwise working-up recycling materials in a rotatable reactor7 May 2013US 8,435,323 B2Boliden Mineral AB
- Method of producing hot metal using solid-reducing furnace and submerged arc furnace12 Mar 2026US 2026/0071286 A1Jfe Steel Corporation
- Processes and Apparatus for Recycling Battery Waste Materials18 Sep 2025US 2025/0293329 A1Gelion Technologies Pty Ltd
- Pre-reduced pellet preparation apparatus and method based on grate-rotary kiln22 Aug 2024US 2024/0279767 A1Baoshan Iron & Steel Co., Ltd.
- Reduced iron production method and reduced iron production device30 May 2024US 2024/0175101 A1Jfe Steel Corporation
- Raw material particles for production of agglomerate, method for producing raw material particles for production of agglomerate, agglomerate, method for producing agglomerate, and method for producing reduced iron23 May 2024US 2024/0167110 A1Jfe Steel Corporation
Most cited
By later US patents
- Method and apparatus for preparing agglomerates suitable for use in a blast furnace117US 4,055,390 AMolten Metal Engineering Co. · 1977
- Direct reduction method and rotary hearth furnace20US 6,296,479 B1Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) · 2001
- Method for agglomerating finely divided agglomerative materials in a rotary drum assembly12US 4,133,718 ADravo Corporation · 1979
- Method of sintering and apparatus for carrying out the method12US 4,168,951 ALuossavaara-Kiirunavaara Aktiebolag · 1979
- Method of processing finely divided material incorporating metal based constituents11US 6,083,295 AArc Dust Processing (UK) Limited · 2000