C21B 7/02
Internal forms
C21B7/02 (Internal forms) appears on 5 US grants and 4 published applications in this corpus.
Search patents in C21B- Granted patents
- 5
- Published applications
- 4
- Assignees
- 5
- Inventors
- 14
- Latest grant
- 3 Jan 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Charging system, in particular for a shaft smelt reduction furnace3 Jan 2023US 11,542,565 B2Paul Wurth S. A.
- Wear resistant composite material, its application in cooling elements for a metallurgical furnace, and method of manufacturing same7 Jan 2020US 10,527,352 B2Hatch Ltd.
- Apparatus and method for frame and brick constructions11 Aug 2015US 9,102,990 B2Berry Metal Company
- Metallurgical shaft furnace1 Mar 1977US 4,009,870 A
- Metallurgical furnace1 Mar 1977US 4,009,871 A
- Blast furnace for ironmaking production16 Nov 2023US 2023/0366048 A1ArcelorMittal
- Charging system, in particular for a shaft smelt reduction furnace8 Oct 2020US 2020/0318207 A1Paul Wurth S. A.
- Wear resistant composite material, its application in cooling elements for a metallurgical furnace, and method of manufacturing same6 Dec 2018US 2018/0347905 A1Hatch Ltd.
- Apparatus and method for frame and brick constructions3 May 2012US 2012/0104670 A1Berry Metal Company
Most cited
By later US patents