C21C 7/068
Decarburising
C21C7/068 (Decarburising) appears on 153 US grants and 124 published applications in this corpus.
Search patents in C21C- Granted patents
- 153
- Published applications
- 124
- Assignees
- 92
- Inventors
- 455
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 7 | 0 |
| 1978 | 3 | 0 |
| 1979 | 8 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 1 |
| 2003 | 2 | 1 |
| 2004 | 4 | 6 |
| 2005 | 2 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 3 |
| 2008 | 1 | 1 |
| 2009 | 1 | 5 |
| 2010 | 2 | 7 |
| 2011 | 3 | 4 |
| 2012 | 6 | 4 |
| 2013 | 3 | 1 |
| 2014 | 1 | 2 |
| 2015 | 2 | 6 |
| 2016 | 1 | 3 |
| 2017 | 2 | 3 |
| 2018 | 4 | 4 |
| 2019 | 3 | 3 |
| 2020 | 2 | 3 |
| 2021 | 3 | 1 |
| 2022 | 4 | 6 |
| 2023 | 1 | 13 |
| 2024 | 3 | 15 |
| 2025 | 16 | 21 |
| 2026 | 6 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Converter steelmaking method23 Jun 2026US 12,662,712 B2Jfe Steel Corporation
- Method for producing chromium-containing molten steel16 Jun 2026US 12,655,488 B2Jfe Steel Corporation
- Decarburization refining method for molten steel under reduced pressure19 May 2026US 12,630,893 B2Jfe Steel Corporation
- Method for preparing stainless steel seamless tube with ultra-high cleanliness for integrated circuit and IC industry preparation device, and stainless steel seamless tube14 Apr 2026US 12,601,026 B2Shengtak New Materials Co., Ltd
- Production method for non-oriented silicon steel and non-oriented silicon steel31 Mar 2026US 12,590,351 B2Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd (Cn) China
- Method for producing steel using micronized calcium carbonate3 Sep 2026US 2026/0258519 A1Chemtreat, Inc.
- Ni-cr-fe-mo alloys with excellent surface properties and their production methods28 May 2026US 2026/0146308 A1Nippon Yakin Kogyo Co., Ltd.
- Low-sulfur granulated metallic units, and associated systems, devices, and methods14 May 2026US 2026/0131376 A1Suncoke Technology and Development LLC
- Fe-cr-ni alloys with excellent surface properties and their production methods7 May 2026US 2026/0125781 A1Nippon Yakin Kogyo Co., Ltd.
- Method of smelting steel and method of producing steel30 Apr 2026US 2026/0117332 A1Jfe Steel Corporation
Most cited
By later US patents
- Method of decarburizing molten metal in the refining of steel using neural networks87US 5,327,357 APraxair Technology, Inc. · 1994
- Process and unit for supplying a gas under pressure to an installation that consumes a constituent of air17US 5,505,052 AL Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 1996
- Replacement of argon with carbon dioxide in a reactor containing molten metal for the purpose of refining molten metal13US 5,190,577 ALiquid Air Corporation · 1993
- Method for controlling secondary top-blown oxygen in subsurface pneumatic steel refining10US 4,599,107 AUnion Carbide Corporation · 1986
- Method and device for dispersing a melt with a fluid jet8US 4,011,290 AOutokumpu Oy · 1977