C21C 7/064
Dephosphorising
Official title: Dephosphorising; Desulfurising
C21C7/064 (Dephosphorising) appears on 284 US grants and 206 published applications in this corpus.
Search patents in C21C- Granted patents
- 284
- Published applications
- 206
- Assignees
- 170
- Inventors
- 847
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 8 | 0 |
| 1978 | 10 | 0 |
| 1979 | 8 | 0 |
| 1980 | 19 | 0 |
| 1981 | 12 | 0 |
| 1982 | 9 | 0 |
| 1983 | 13 | 0 |
| 1984 | 9 | 0 |
| 1985 | 11 | 0 |
| 1986 | 6 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 7 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 6 | 4 |
| 2003 | 5 | 2 |
| 2004 | 1 | 2 |
| 2005 | 3 | 6 |
| 2006 | 1 | 4 |
| 2007 | 1 | 3 |
| 2008 | 0 | 2 |
| 2009 | 2 | 5 |
| 2010 | 3 | 6 |
| 2011 | 3 | 8 |
| 2012 | 5 | 4 |
| 2013 | 3 | 5 |
| 2014 | 5 | 9 |
| 2015 | 4 | 10 |
| 2016 | 7 | 4 |
| 2017 | 7 | 7 |
| 2018 | 4 | 5 |
| 2019 | 6 | 8 |
| 2020 | 6 | 4 |
| 2021 | 7 | 9 |
| 2022 | 4 | 10 |
| 2023 | 8 | 14 |
| 2024 | 7 | 23 |
| 2025 | 23 | 28 |
| 2026 | 11 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for desulfurizing molten metal21 Jul 2026US 12,686,895 B2Jfe Steel Corporation
- Method for manufacturing low-phosphorus molten steel9 Jun 2026US 12,649,955 B2Jfe Steel Corporation
- Process for smelting steel for ultrafine silicon carbide sawing wire9 Jun 2026US 12,649,958 B2Baoshan Iron & Steel Co., Ltd.
- 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 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
- A method for manufacturing molten pig iron into an electrical smelting furnace10 Sep 2026US 2026/0265845 A1
- A method of manufacturing molten pig iron into an electrical smelting furnace3 Sep 2026US 2026/0258515 A1
- Steel sheet and high strength press hardened steel part having excellent bending anisotropy and method of manufacturing the same20 Aug 2026US 2026/0242906 A1
- Steel plate and method of producing same, and steel pipe or tube6 Aug 2026US 2026/0226572 A1Jfe Steel Corporation
- Steel plate and method of producing same, and steel pipe or tube9 Jul 2026US 2026/0193751 A1Jfe Steel Corporation
Most cited
By later US patents
- Method for producing titanium-bearing microalloyed high-strength low-alloy steel34US 6,669,789 B1Nucor Corporation · 2003
- Process and additive for the ladle refining of steel25US 5,397,379 AOglebay Norton Company · 1995
- Addition of magnesium to molten metal24US 3,957,502 AMagnesium Elektron Limited · 1976
- Desulphurization of an iron melt24US 4,139,369 AHoechst Aktiengesellschaft · 1979
- Magnesium calcium oxide composite20US 4,705,561 AThe Dow Chemical Company · 1987