C21D 9/66
Tower-type furnaces
C21D9/66 (Tower-type furnaces) appears on 7 US grants and 5 published applications in this corpus.
Search patents in C21D- Granted patents
- 7
- Published applications
- 5
- Assignees
- 7
- Inventors
- 17
- Latest grant
- 24 May 2005
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 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 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 2 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Device for heat treating metallic webs in-line24 May 2005US 6,895,692 B2
- Heat shielding apparatus for vertical continuous annealing furnace3 Sep 2002US 6,444,163 B1Kawasaki Steel Corporation
- Tower furnace for heat treatment of metal strips30 Jul 2002US 6,425,756 B2
- Tower furnace for the heat treatment of metal strips29 Feb 2000US 6,031,206 A
- Vertical annealing furnace for a strip treatment device18 Jan 2000US 6,015,526 AThermtec, Inc.
- Method for producing an electric strip28 Sep 2023US 2023/0304115 A1NanoNeal Technologies GmbH
- Method and apparatus for improved formability of galvanized steel having high tensile strength12 Mar 2009US 2009/0065103 A1
- Device for heat treating metallic webs in-line12 Aug 2004US 2004/0154182 A1
- Heat shielding apparatus for vertical continuous annealing furnace12 Sep 2002US 2002/0125621 A1Kawasaki Steel Corporation
- Tower furnace for heat treatment of metal strips3 Jan 2002US 2002/0000180 A1
Most cited
By later US patents
- Process for box annealing a steel strip coil4US 4,290,829 ANippon Steel Corporation · 1981
- Vertical bright annealing furnace for continuous heat treatment of metal strips2US 5,588,828 AAcerinox, S.A. · 1996
- Vertical annealing furnace for a strip treatment device2US 6,015,526 AThermtec, Inc. · 2000
- Device for heat treating metallic webs in-line2US 6,895,692 B22005
- Tower furnace for the heat treatment of metal strips1US 6,031,206 A2000