C21B 7/16
Tuyéres
C21B7/16 (Tuyéres) appears on 131 US grants and 105 published applications in this corpus.
Search patents in C21B- Granted patents
- 131
- Published applications
- 105
- Assignees
- 102
- Inventors
- 313
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 7 | 0 |
| 1980 | 5 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 6 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 2 |
| 2002 | 2 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 5 |
| 2008 | 0 | 4 |
| 2009 | 2 | 0 |
| 2010 | 1 | 3 |
| 2011 | 2 | 7 |
| 2012 | 4 | 3 |
| 2013 | 2 | 4 |
| 2014 | 5 | 5 |
| 2015 | 7 | 19 |
| 2016 | 3 | 8 |
| 2017 | 5 | 3 |
| 2018 | 8 | 5 |
| 2019 | 4 | 1 |
| 2020 | 3 | 3 |
| 2021 | 2 | 3 |
| 2022 | 2 | 7 |
| 2023 | 1 | 10 |
| 2024 | 1 | 1 |
| 2025 | 4 | 4 |
| 2026 | 2 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for operating blast furnace12 May 2026US 12,624,404 B2Jfe Steel Corporation
- Method for operation of blast furnace3 Mar 2026US 12,565,688 B2Kobe Steel, Ltd.
- Reducing gas injection system23 Dec 2025US 12,504,233 B2Paul Wurth S. A.
- Blast furnace operation method5 Aug 2025US 12,378,615 B2Jfe Steel Corporation
- Tuyere stock, method of fabricating the same, and air blast system for melting furnace6 May 2025US 12,291,756 B2Excello Co., Ltd.
- Tuyere for a metallurgical furnace1 Oct 2026US 2026/0297694 A1Paul Wurth S. A.
- Iron ore reducing and melting apparatus and method24 Sep 2026US 2026/0286453 A1Paul Wurth S. A.
- Tuyere for a metallurgical furnace10 Sep 2026US 2026/0265844 A1Paul Wurth S. A.
- Method for operating a smelting furnace installation28 May 2026US 2026/0146300 A1Paul Wurth S. A.
- Iron ore reducing and melting apparatus and method19 Mar 2026US 2026/0078456 A1Paul Wurth S.A.
Most cited
By later US patents
- Method for in-flight combustion of carbonaceous fuels34US 4,217,132 ATRW Inc. · 1980
- Method and apparatus for in-flight combustion of carbonaceous fuels31US 4,586,443 ATRW Inc. · 1986
- Disperser23US 4,097,092 AThe Babcock & Wilcox Company · 1978
- Compensator connection for tuyere stock22US 3,997,194 AS. A. des Anciens Etablissements Paul Wurth · 1976
- Fluid-cooled metallurgical tuyere20US 4,572,482 ACorcliff Corporation · 1986