COMPANHIA VALE DO RIO DOCE
Patent Owner
Stats
- 3 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Dec 09, 2014 most recent publication
Details
- 3 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 14 Total Citation Count
- Apr 01, 1998 Earliest Filing
- 0 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
8906220 Method for production of metallic cobalt from the nickel solvent extraction raffinateOct 19, 07Dec 09, 14[C22B, C25C]
6660076 High performance kaolin pigment, a paper coating color containing high performance kaolin pigment, and a method for making high performance kaolin pigmentJun 04, 02Dec 09, 03[C04B]
6171562 Process for the extraction and elimination of deleterious material from natural manganese dioxide and concentrate of manganese dioxide obtained by said processApr 01, 98Jan 09, 01[C22B]
Expired/Abandoned/Withdrawn Patents
- No Patents to Display
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