C21D 9/0031
Rotary furnaces with horizontal or slightly inclined axis
Official title: {Rotary furnaces with horizontal or slightly inclined axis}
C21D9/0031 (Rotary furnaces with horizontal or slightly inclined axis) appears on 16 US grants and 9 published applications in this corpus.
Search patents in C21D- Granted patents
- 16
- Published applications
- 9
- Assignees
- 14
- Inventors
- 39
- Latest grant
- 26 Mar 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 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 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 2 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 3 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for moulding a sheet into a component of complex shape having areas with different mechanical properties, particularly a motor-vehicle component26 Mar 2024US 11,940,217 B2C. R. F. Societa Consortile per Azioni
- Method for moulding a sheet into a component of complex shape having areas with different mechanical properties, particularly a motor-vehicle component9 Aug 2022US 11,407,020 B2C. R. F. Societa Consortile per Azioni
- Treatment device26 Apr 2016US 9,324,494 B2Hitachi Metals, Ltd.
- Rotating vacuum heat treatment equipment23 Feb 2016US 9,267,185 B2China North Magnetic & Electronic Technology Co., LTD
- Liquid quenching apparatus and method17 Oct 2000US 6,132,534 ASeco/Warwick S.A.
- Method and furnace for treating an iron-cobalt component23 Jan 2025US 2025/0027180 A1ROLLS-ROYCE plc
- Heat treatment furnace20 Jun 2024US 2024/0200160 A1Kanto Yakin Kogyo K.K.
- Systems and methods for processing metallic articles with a retort furnace28 Oct 2021US 2021/0332452 A1
- Method for moulding a sheet into a component of complex shape having areas with different mechanical properties, particularly a motor-vehicle component26 Aug 2021US 2021/0260643 A1C. R. F. Societa Consortile per Azioni
- Method for moulding a sheet into a component of complex shape having areas with different mechanical properties, particularly a motor-vehicle component26 Aug 2021US 2021/0262732 A1C. R. F. Societa Consortile per Azioni
Most cited
By later US patents
- Rotary retort furnace27US 4,648,836 ACan-Eng Holdings, Ltd. · 1987
- Rotary retort furnace13US 4,090,622 ASunbeam Equipment Corporation · 1978
- Rotary retort heat treating furnace seals10US 5,567,380 A1996
- Single charge continuous rotary retort furnace with an accessible door9US 5,749,722 AAmerican Gas Furnace Company · 1998
- Rotary retort furnace6US 4,025,297 ASunbeam Equipment Corporation · 1977