C21C 5/30
Regulating or controlling the blowing
C21C5/30 (Regulating or controlling the blowing) appears on 364 US grants and 136 published applications in this corpus.
Search patents in C21C- Granted patents
- 364
- Published applications
- 136
- Assignees
- 165
- Inventors
- 843
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 23 | 0 |
| 1977 | 17 | 0 |
| 1978 | 14 | 0 |
| 1979 | 10 | 0 |
| 1980 | 10 | 0 |
| 1981 | 14 | 0 |
| 1982 | 25 | 0 |
| 1983 | 28 | 0 |
| 1984 | 21 | 0 |
| 1985 | 17 | 0 |
| 1986 | 11 | 0 |
| 1987 | 8 | 0 |
| 1988 | 10 | 0 |
| 1989 | 2 | 0 |
| 1990 | 12 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 9 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 10 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 2 |
| 2003 | 3 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 3 |
| 2006 | 0 | 3 |
| 2007 | 0 | 2 |
| 2008 | 0 | 5 |
| 2009 | 4 | 7 |
| 2010 | 3 | 3 |
| 2011 | 5 | 8 |
| 2012 | 5 | 4 |
| 2013 | 7 | 4 |
| 2014 | 2 | 8 |
| 2015 | 4 | 13 |
| 2016 | 5 | 2 |
| 2017 | 6 | 5 |
| 2018 | 4 | 5 |
| 2019 | 2 | 1 |
| 2020 | 3 | 6 |
| 2021 | 3 | 7 |
| 2022 | 3 | 14 |
| 2023 | 5 | 10 |
| 2024 | 6 | 12 |
| 2025 | 2 | 5 |
| 2026 | 8 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Lance for blowing oxygen in steelmaking21 Jul 2026US 12,686,894 B2ArcelorMittal
- Biomass pyrolysis integrated with bio-reduction of metal ores, hydrogen production, and/or activated-carbon production9 Jun 2026US 12,649,959 B2Carbon Technology Holdings, LLC
- Ultra-high phosphorus molten iron low-cost smelting method for polar steel21 Apr 2026US 12,606,877 B2Laiwu Steel Yinshan Section Co., Ltd.
- Method for simultaneously injecting a fuel gas and an oxygen-rich gas into a unit14 Apr 2026US 12,601,022 B2SMS group GmbH
- Refining process control device and refining process control method7 Apr 2026US 12,595,523 B2Jfe Steel Corporation
- Methods and systems for low-slag efficient smelting based on submerged supersonic gas-solid injection17 Sep 2026US 2026/0275436 A1University of Science and Technology Beijing
- Method for manufacturing pig iron in a production line comprising an electrical smelting furnace10 Sep 2026US 2026/0265850 A1
- Molten iron dephosphorization method2 Jul 2026US 2026/0185173 A1Jfe Steel Corporation
- Refractory gas purging plug4 Jun 2026US 2026/0151827 A1Refractory Intellectual Property GmbH & Co.KG
- Refractory gas purging plug and method for controlling the conduction of gas to a refractory gas purging plug14 May 2026US 2026/0132988 A1Refractory Intellectual Property GmbH & Co.KG
Most cited
By later US patents
- Apparatus and method for submerged injection of a feed composition into a molten metal bath151US 5,443,572 AMolten Metal Technology, Inc. · 1995
- Method for treating organic waste116US 5,537,940 AMolten Metal Technology, Inc. · 1996
- Method for injecting feed streams into a molten bath112US 5,858,059 AMolten Metal Technology, Inc. · 1999
- Method of decarburizing molten metal in the refining of steel using neural networks87US 5,327,357 APraxair Technology, Inc. · 1994
- System for releasing gas into molten metal87US 8,440,135 B22013