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Patent applications and USPTO patent grants for Lindstrom; Roald E..The latest application filed is for "leaching agglomerated gold - silver ores".
Patent | Date |
---|---|
Leaching agglomerated gold - silver ores Grant 4,256,706 - Heinen , et al. March 17, 1 | 1981-03-17 |
Selective removal of mercury from cyanide solutions Grant 4,256,707 - Flynn, Jr. , et al. March 17, 1 | 1981-03-17 |
Desorption of gold from activated carbon Grant 4,208,378 - Heinen , et al. June 17, 1 | 1980-06-17 |
Separate recovery of silver and gold from cyanide solutions Grant 4,072,587 - Heinen , et al. February 7, 1 | 1978-02-07 |
Recovery of copper and silver from sulfide concentrates Grant 4,053,305 - Smyres , et al. October 11, 1 | 1977-10-11 |
Recovery Of Gold From Ores Grant 3,764,650 - Scheiner , et al. October 9, 1 | 1973-10-09 |
Recovery Of Gold Grant 3,635,697 - Scheiner , et al. January 18, 1 | 1972-01-18 |
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