C21C 7/0056
Treating molten ferrous alloys: using cored wires
Official title: {using cored wires}
C21C7/0056 (Treating molten ferrous alloys: using cored wires) appears on 130 US grants and 97 published applications in this corpus.
Search patents in C21C- Granted patents
- 130
- Published applications
- 97
- Assignees
- 107
- Inventors
- 307
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 7 | 0 |
| 1979 | 7 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 6 | 0 |
| 1988 | 7 | 0 |
| 1989 | 5 | 0 |
| 1990 | 7 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 2 |
| 2003 | 1 | 0 |
| 2004 | 2 | 1 |
| 2005 | 0 | 2 |
| 2006 | 1 | 5 |
| 2007 | 0 | 3 |
| 2008 | 2 | 7 |
| 2009 | 3 | 7 |
| 2010 | 6 | 15 |
| 2011 | 11 | 6 |
| 2012 | 5 | 5 |
| 2013 | 3 | 2 |
| 2014 | 4 | 6 |
| 2015 | 4 | 3 |
| 2016 | 2 | 2 |
| 2017 | 3 | 4 |
| 2018 | 0 | 5 |
| 2019 | 3 | 2 |
| 2020 | 0 | 1 |
| 2021 | 1 | 2 |
| 2022 | 2 | 2 |
| 2023 | 1 | 3 |
| 2024 | 0 | 4 |
| 2025 | 2 | 2 |
| 2026 | 1 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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 producing hypereutectoid steel rail resistant to contact fatigue5 Aug 2025US 12,378,649 B2Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd.
- Cored wire for out-of-furnace treatment of metallurgical melts21 Jan 2025US 12,203,146 B2Research and Development Center Npp, Limited Liability Company
- Steel for pressure vessels having excellent resistance to hydrogen induced cracking and manufacturing method thereof14 Feb 2023US 11,578,376 B2Posco
- Cored wire with particulate material13 Dec 2022US 11,525,168 B2P.C. Campana, Inc.
- Steel plate and method of producing same, and steel pipe or tube6 Aug 2026US 2026/0226572 A1Jfe Steel Corporation
- Wire for Refining Molten Metal23 Jul 2026US 2026/0209876 A1Injection Alloys Limited
- Additive composition and method for chemically adjusting molten metal11 Jun 2026US 2026/0159908 A1Hatch Ltd.
- Method for producing and preparing steel bar for automotive bushings by means of ecological and economical arc furnace5 Feb 2026US 2026/0035775 A1Bengang Steel Plates Co., Ltd.
- Steel board for polar marine engineering and preparation method therefor29 Jan 2026US 2026/0028690 A1Shadong Iron and Steel Co., Ltd
Most cited
By later US patents
- Apparatus for treating metal melts with a purging gas during continuous casting123US 3,954,134 ARheinstahl Huettenwerke AG · 1976
- Metal refining with refractory coated pipe26US 4,783,057 ARichland Industrial, Inc. of Columbia, SC · 1988
- Refractory coating for metal25US 4,729,548 ARichland Industrial, Inc. · 1988
- Method of applying a refractory coating to a conduit23US 5,066,350 ARichland Industrial, Inc. · 1991
- Method for refining molten iron and steels19US 4,094,666 AMetal Research Corporation · 1978