Assignee
PROVINCIAL HOLDINGS LTD
CA·4 granted patents·137 citations·filing 1980–1983
Top patents by PatentIndex Score
4 records- 0191US4619814AProcess for the recovery of non-ferrous metals from sulphide ores and concentratesPROVINCIAL HOLDINGS LTD·Filed 1983·Granted Oct 28, 1986·55 cites·25 claims
- 0284US4415540ARecovery of non-ferrous metals by thermal treatment of solutions containing non-ferrous and iron sulphatesPROVINCIAL HOLDINGS LTD·Filed 1982·Granted Nov 15, 1983·53 cites·5 claims
- 0374US4372782ARecovery of lead and silver from minerals and process residuesPROVINCIAL HOLDINGS LTD·Filed 1981·Granted Feb 8, 1983·20 cites·46 claims
- 0452US4317803ARecovery of non-ferrous metals by thermal treatments of solutions containing non-ferrous and iron sulphatesPROVINCIAL HOLDINGS LTD·Filed 1980·Granted Mar 2, 1982·9 cites·7 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →