C21C 5/34
Blowing through the bath
Official title: Blowing through the bath (C21C5/35 takes precedence)
C21C5/34 (Blowing through the bath) appears on 104 US grants and 36 published applications in this corpus.
Search patents in C21C- Granted patents
- 104
- Published applications
- 36
- Assignees
- 60
- Inventors
- 262
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 10 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 9 | 0 |
| 1983 | 7 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 2 | 0 |
| 2011 | 2 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 4 |
| 2015 | 2 | 4 |
| 2016 | 4 | 1 |
| 2017 | 2 | 2 |
| 2018 | 1 | 1 |
| 2019 | 2 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 2 |
| 2022 | 1 | 6 |
| 2023 | 1 | 3 |
| 2024 | 0 | 1 |
| 2025 | 0 | 1 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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.
- Blowing control method for maintaining mushroom head of bottom-blowing nozzle converter10 Mar 2026US 12,571,061 B2Soochow University
- Gas injection nozzle refractory and gas injection nozzle21 Nov 2023US 11,821,691 B2Jfe Steel Corporation
- Gas purging plug, gas purging system, method for characterization of a gas purging plug and method for purging a metal melt9 Aug 2022US 11,408,040 B2Refractory Intellectual Property GmbH & Co.KG
- 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
- Biomass pyrolysis integrated with bio-reduction of metal ores, hydrogen production, and/or activated-carbon production12 Jun 2025US 2025/0188565 A1
- Molten iron refining method22 Feb 2024US 2024/0060149 A1Jfe Steel Corporation
- Method for treating molten metals and/or slags in metallurgical baths and metallurgical plant for treating molten metals28 Dec 2023US 2023/0416868 A1SMS group GmbH
Most cited
By later US patents
- 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
- Metal refining method and apparatus33US 4,089,677 ABritish Steel Corporation · 1978
- Process for refining pig iron32US 3,953,199 AVereinigte Osterreichische Eisenund Stahlwerke · 1976
- Steelmaking process18US 4,198,230 AEisenwerk-Gesellschaft Maximilianshutte mbH · 1980