C22B 19/14
In vertical retorts
Official title: in vertical retorts
C22B19/14 (In vertical retorts) appears on 12 US grants and 6 published applications in this corpus.
Search patents in C22B- Granted patents
- 12
- Published applications
- 6
- Assignees
- 14
- Inventors
- 28
- Latest grant
- 28 Jun 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Electric arc furnace dust recycling apparatus and method28 Jun 2016US 9,376,732 B2Empire Technology Development LLC
- Electric arc furnace dust recycling apparatus and method30 Sep 2014US 8,845,780 B2Empire Technology Development LLC
- Reduction apparatus, reduction apparatus manufacture method, and vacuum smelting reduction furnace using the same27 Mar 2012US 8,142,710 B2MG Century Mining Corporation
- Process and apparatus for extracting zinc7 Sep 2010US 7,790,099 B2David Wilson Investments Pty. Ltd.
- Oven mercury retorting device6 Apr 1999US 5,891,216 ASummit Valley Equipment and Engineering, Inc.
- Geothermally Powered Pyrometallurgical Zinc Production20 Feb 2025US 2025/0060163 A1EnhancedGEO Holdings, LLC
- Electric arc furnace dust recycling apparatus and method25 Dec 2014US 2014/0374970 A1Empire Technology Development LLC
- Electric arc furnace dust recycling apparatus and method21 Feb 2013US 2013/0042722 A1Empire Technology Development LLC
- Reduction apparatus, reduction apparatus manufacture method, and vacuum smelting reduction furnace using the same4 Jun 2009US 2009/0140472 A1MG Century Mining Corporation
- Reduction retort, reduction retort manufacture method, and vacuum smelting reduction furnace using the same14 May 2009US 2009/0121397 A1MG Century Mining Corporation
Most cited
By later US patents
- Method and apparatus for simultaneously separating volatile and non-volatile metals13US 4,606,760 AFritz Enterprises, Inc. · 1986
- Apparatus for simultaneously separating volatile and non-volatile metals12US 4,655,437 AFritz Enterprises, Inc. · 1987
- Method of making pig iron with zinc recovery9US 5,567,225 AHoogovens Staal BV · 1996
- Process for the volatilization of zinc and/or lead from metallurgical material4US 4,200,454 AMetallgesellschaft Aktiengesellschaft · 1980
- Continuous feed shaft retort process for recovery of non-ferrous metals from process dust4US 4,963,182 AZia Technology, Inc. · 1990