C22B 47/0027
Preliminary treatment
Official title: {Preliminary treatment}
C22B47/0027 (Preliminary treatment) appears on 20 US grants and 2 published applications in this corpus.
Search patents in C22B- Granted patents
- 20
- Published applications
- 2
- Assignees
- 12
- Inventors
- 32
- Latest grant
- 15 Mar 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 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 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 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 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Process for recovering metal values from oxides of manganese-containing materials15 Mar 2016US 9,284,627 B2Deepgreen Engineering, Pte. Ltd.
- Process to produce manganese pellets from non-calcinated manganese ore and agglomerate obtained by this process10 Nov 2015US 9,181,601 B2Vale S.A.
- Process for the extraction and elimination of deleterious material from natural manganese dioxide and concentrate of manganese dioxide obtained by said process9 Jan 2001US 6,171,562 B2Companhia Vale Do Rio Doce
- Process for the recovery of nickel, cobalt and manganese from their oxides and silicates19 Jan 1982US 4,311,520 ACato Research Corporation
- Method for separating metal values from sea nodules28 Jul 1981US 4,280,986 AUniversity Patents, Inc.
- Process for recovering metal values from oxides of manganese-containing materials6 Aug 2015US 2015/0218672 A1Drinkard Research and Development Corporation
- Process to produce manganese pellets from non-calcinated manganese ore and agglomerate obtained by this process3 May 2012US 2012/0103134 A1Vale S.A.
Most cited
By later US patents
- Method for separating metal constituents from ocean floor nodules46US 4,042,664 ADeepsea Ventures, Inc. · 1977
- Process for the recovery of nickel, cobalt and manganese from their oxides and silicates17US 4,311,520 ACato Research Corporation · 1982
- Two-stage fluid bed reduction of manganese nodules13US 4,044,094 AKennecott Copper Corporation · 1977
- Manganese nodule pelletizing10US 3,942,974 AKennecott Copper Corporation · 1976
- Extraction of metal values from manganese nodules8US 4,137,291 ADeepsea Ventures, Inc. · 1979