F27D 2003/105
Using shutters
Official title: {using shutters}
F27D2003/105 (Using shutters) appears on 31 US grants and 17 published applications in this corpus.
Search patents in F27D- Granted patents
- 31
- Published applications
- 17
- Assignees
- 15
- Inventors
- 68
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 5 |
| 2012 | 2 | 1 |
| 2013 | 1 | 1 |
| 2014 | 2 | 1 |
| 2015 | 2 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for operating a blast furnace plant23 Jun 2026US 12,663,212 B2Paul Wurth S. A.
- Submerged feedstock charging of melting vessels29 Jul 2025US 12,371,361 B2Owens-Brockway Glass Container Inc.
- Sealing valve arrangement for a shaft furnace charging installation14 Dec 2021US 11,199,359 B2Paul Wurth S. A.
- Door and valve assembly for a charging installation of a shaft furnace22 Dec 2015US 9,217,606 B2Paul Wurth S. A.
- Method and system for adjusting the flow rate of charge material in a charging process of a shaft furnace12 May 2015US 9,031,704 B2Paul Wurth S. A.
- Submerged feedstock charging of melting vessels6 Nov 2025US 2025/0340474 A1Owens-Brockway Glass Container Inc.
- Method for operating a blast furnace plant7 Mar 2024US 2024/0077255 A1Paul Wurth S. A.
- Submerged feedstock charging of melting vessels31 Mar 2022US 2022/0098076 A1Owens-Brockway Glass Container Inc.
- Sealing valve arrangement for a shaft furnace charging installation12 Sep 2019US 2019/0277567 A1Paul Wurth S. A.
- Door and valve assembly for a charging installation of a shaft furnace24 Apr 2014US 2014/0112738 A1Paul Wurth S. A.
Most cited
By later US patents
- Shaft furnace feed device12US 4,040,530 AS. A. des Anciens Etablissements Paul Wurth · 1977
- Apparatus and process system for preheating of steel scrap for melting metallurgical furnaces with concurrent flow of scrap and heating gases11US 6,024,912 AEMPCO (Canada) Ltd. · 2000
- Process and installation for charging a shaft furnace8US 4,322,197 APaul Wurth S.A. · 1982
- Installation for producing molten metal in an electric furnace8US 5,390,212 AClecim · 1995
- Furnace charger with discharge channel having approximate oval cross-section7US 4,074,835 AS. A. des Anciens Etablissements Paul Wurth · 1978