PROVINCIAL HOLDINGS LTD. C/O DEPARTMENT OF COMMERCE AND DEVELOPMENT
Patent Owner
Stats
- 0 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Oct 28, 1986 most recent publication
Details
- 0 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 32 Total Citation Count
- Sep 11, 1978 Earliest Filing
- 3 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
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Recent Publications
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Recent Patents
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Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
4619814 Process for the recovery of non-ferrous metals from sulphide ores and concentratesExpiredSep 07, 83Oct 28, 86[C01G]
4317803 Recovery of non-ferrous metals by thermal treatments of solutions containing non-ferrous and iron sulphatesExpiredSep 22, 80Mar 02, 82[C01G]
4224122 Recovery of non-ferrous metals by thermal treatment of solutions containing non-ferrous and iron sulphatesExpiredSep 11, 78Sep 23, 80[C25C, C01G]
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