C21C 5/42
Constructional features of converters
C21C5/42 (Constructional features of converters) appears on 1,129 US grants and 600 published applications in this corpus.
Search patents in C21C- Granted patents
- 1,129
- Published applications
- 600
- Assignees
- 495
- Inventors
- 2,218
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 30 | 0 |
| 1977 | 36 | 0 |
| 1978 | 41 | 0 |
| 1979 | 17 | 0 |
| 1980 | 31 | 0 |
| 1981 | 39 | 0 |
| 1982 | 23 | 0 |
| 1983 | 37 | 0 |
| 1984 | 41 | 0 |
| 1985 | 28 | 0 |
| 1986 | 19 | 0 |
| 1987 | 29 | 0 |
| 1988 | 43 | 0 |
| 1989 | 23 | 0 |
| 1990 | 24 | 0 |
| 1991 | 25 | 0 |
| 1992 | 21 | 0 |
| 1993 | 22 | 0 |
| 1994 | 30 | 0 |
| 1995 | 18 | 0 |
| 1996 | 19 | 0 |
| 1997 | 7 | 0 |
| 1998 | 27 | 0 |
| 1999 | 25 | 0 |
| 2000 | 21 | 0 |
| 2001 | 31 | 11 |
| 2002 | 25 | 12 |
| 2003 | 24 | 27 |
| 2004 | 20 | 23 |
| 2005 | 13 | 16 |
| 2006 | 5 | 28 |
| 2007 | 8 | 31 |
| 2008 | 12 | 27 |
| 2009 | 22 | 21 |
| 2010 | 18 | 21 |
| 2011 | 17 | 38 |
| 2012 | 22 | 24 |
| 2013 | 17 | 21 |
| 2014 | 22 | 24 |
| 2015 | 18 | 23 |
| 2016 | 17 | 28 |
| 2017 | 23 | 23 |
| 2018 | 17 | 19 |
| 2019 | 22 | 22 |
| 2020 | 17 | 21 |
| 2021 | 13 | 15 |
| 2022 | 10 | 27 |
| 2023 | 17 | 24 |
| 2024 | 16 | 33 |
| 2025 | 11 | 20 |
| 2026 | 16 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electric induction heating and melting furnace refractory life cycle wear imaging and processing28 Jul 2026US 12,692,564 B2Inductotherm Corp.
- Self-adaptive hanging structure of converter28 Jul 2026US 12,692,565 B2
- Tilting ladle carrier28 Jul 2026US 12,692,566 B2Edw. C. Levy Co.
- Lance for blowing oxygen in steelmaking21 Jul 2026US 12,686,894 B2ArcelorMittal
- Decarburization refining method for molten steel under reduced pressure19 May 2026US 12,630,893 B2Jfe Steel Corporation
- Tuyere for a metallurgical furnace1 Oct 2026US 2026/0297694 A1Paul Wurth S. A.
- Refractory monitoring system for high-voltage and high-temperature environment applications6 Aug 2026US 2026/0227184 A1
- Molten material height detection method, molten material height detection apparatus, and method for manufacturing molten material30 Jul 2026US 2026/0219092 A1Jfe Steel Corporation
- Slag blocking device for a metallurgical vessel23 Jul 2026US 2026/0208261 A1Refractory Intellectual Property GmbH & Co.KG
- Granule and/or powder solid materials injection lance for injecting solid materials in the form of granules and/or powders into a metallurgical furnace23 Jul 2026US 2026/0209875 A1Tenova S. P. A.
Most cited
By later US patents
- Probe for taking gas samples and heat measurements in a shaft furnace485US 5,108,192 APaul Wurth S. A. · 1992
- Apparatus and method for submerged injection of a feed composition into a molten metal bath151US 5,443,572 AMolten Metal Technology, Inc. · 1995
- Universal coupling117US 6,358,467 B1Metaullics Systems Co., L.P. · 2002
- Method for top-charging solid waste into a molten metal bath115US 5,491,279 AMolten Metal Technology, Inc. · 1996
- Method and apparatus for top-charging solid waste into a molten metal bath113US 5,571,486 AMolten Metal Technology, Inc. · 1996