C21D 9/565
Sealing arrangements
Official title: {Sealing arrangements}
C21D9/565 (Sealing arrangements) appears on 35 US grants and 17 published applications in this corpus.
Search patents in C21D- Granted patents
- 35
- Published applications
- 17
- Assignees
- 27
- Inventors
- 74
- Latest grant
- 22 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 5 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 3 |
| 2014 | 1 | 0 |
| 2015 | 1 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 2 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 2 |
| 2021 | 0 | 0 |
| 2022 | 3 | 0 |
| 2023 | 0 | 2 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Steel-strip production method, and steel strip22 Jul 2025US 12,366,409 B2Jfe Steel Corporation
- Sealing device for a continuous furnace30 Aug 2022US 11,427,883 B2SMS group GmbH
- Manufacture of a stress relieved length of steel having an oxidised surface layer16 Aug 2022US 11,414,738 B2Liberty Performance Steels Limited
- Sealing device2 Aug 2022US 11,401,575 B2Jfe Steel Corporation
- Steel-strip production apparatus30 Apr 2019US 10,273,557 B2Jfe Steel Corporation
- Jet-type direct-fired preheating system26 Mar 2026US 2026/0085374 A1Baoshan Iron & Steel Co., Ltd.
- Vertical furnace for a continuous heat treatment of a metal strip7 Dec 2023US 2023/0392868 A1EBNER Industrieofenbau GmbH
- Method for recrystallisation annealing of a non-grain-oriented electric strip6 Jul 2023US 2023/0212708 A1SMS group GmbH
- Sealing device6 Feb 2020US 2020/0040425 A1Jfe Steel Corporation
- Sealing Device for a Continuous Furnace2 Jan 2020US 2020/0002781 A1SMS group GmbH
Most cited
By later US patents
- Seal assembly for thermal treatment furnaces using an atmospheric gas containing hydrogen gas32US 5,693,288 ANisshin Steel Co., Ltd. · 1997
- Vacuum processing of rod, wire or strip material10US 3,952,568 AJohnson & Nephew (Non-Ferrous) · 1976
- Method and apparatus for vacuum deposition plating8US 4,674,443 AMitsubishi Jukogyo Kabushiki Kaisha · 1987
- Differential pressure sealing apparatus and method8US 5,192,585 AKawasaki Steel Corporation · 1993
- Continuous heat treating furnace and atmosphere control method and cooling method in continuous heat treating furnace7US 6,190,164 B1Kawasaki Steel Corporation · 2001