Assignee
HANNA MINING CO
US·23 granted patents·332 citations·filing 1971–1998
Top patents by PatentIndex Score
23 records- 0191US4125588ANickel and magnesia recovery from laterites by low temperature self-sulfationHANNA MINING CO·Filed 1977·Granted Nov 14, 1978·41 cites·9 claims
- 0290US4298379AProduction of high purity and high surface area magnesium oxideHANNA MINING CO·Filed 1980·Granted Nov 3, 1981·39 cites·22 claims
- 0382US4395315ARecovery of nickel from waste materialsHANNA MINING CO·Filed 1981·Granted Jul 26, 1983·23 cites·6 claims
- 0470US4324654ARecovery of copper from copper oxide mineralsHANNA MINING CO·Filed 1978·Granted Apr 13, 1982·26 cites·6 claims
- 0569US5686515AColored polyethylene terephthalate composition and process of its manufactureHANNA MINING CO·Filed 1995·Granted Nov 11, 1997·28 cites·22 claims
- 0669US4163469AHeat reclaim systemHANNA MINING CO·Filed 1977·Granted Aug 7, 1979·21 cites·13 claims
- 0769US4010239AIron oxide sorbents for sulfur oxidesHANNA MINING CO·Filed 1973·Granted Mar 1, 1977·17 cites·5 claims
- 0864US4120698ARecovery of nickel from wastesHANNA MINING CO·Filed 1977·Granted Oct 17, 1978·14 cites·16 claims
- 0963US3960715ACationic froth flotation processHANNA MINING CO·Filed 1974·Granted Jun 1, 1976·23 cites·6 claims
- 1058US4067382AHeat reclaim systemHANNA MINING CO·Filed 1974·Granted Jan 10, 1978·13 cites·13 claims
- 1153US4292281ASelective leaching of chloride from copper oxide mineralsHANNA MINING CO·Filed 1980·Granted Sep 29, 1981·10 cites·30 claims
- 1252US4095306AReaction ladle cleaning machineHANNA MINING CO·Filed 1977·Granted Jun 20, 1978·18 cites·15 claims
- 1348US4406417AMill liner for dry autogenous millsHANNA MINING CO·Filed 1981·Granted Sep 27, 1983·12 cites·12 claims
- 1448US4185996AArsenic and sulfur elimination from cobaltiferous oresHANNA MINING CO·Filed 1978·Granted Jan 29, 1980·6 cites·8 claims
- 1544US4478803ADry scrubbing of SO2 from mixturesHANNA MINING CO·Filed 1983·Granted Oct 23, 1984·10 cites·28 claims
- 1644US4062675AOre treatment involving a halo-metallization processHANNA MINING CO·Filed 1971·Granted Dec 13, 1977·5 cites·26 claims
- 1740US4214983ARecovery of copper from copper oxide mineralsHANNA MINING CO·Filed 1979·Granted Jul 29, 1980·8 cites·11 claims
- 1838US4323199AMill liner for dry autogenous millsHANNA MINING CO·Filed 1980·Granted Apr 6, 1982·9 cites·25 claims
- 1931US6017679AComposition for the manufacture of flexographic printing platesHANNA MINING CO·Filed 1998·Granted Jan 25, 2000·3 cites·17 claims
- 2028US4055631AProduction of iron sulfate monohydrateHANNA MINING CO·Filed 1975·Granted Oct 25, 1977·1 cites·6 claims
- 2127US4238466AAbsorption of sulfur dioxide from gases by ferrous sulfateHANNA MINING CO·Filed 1976·Granted Dec 9, 1980·1 cites·6 claims
- 2222US5851731AComposition for the manufacture of flexographic printing platesHANNA MINING CO·Filed 1996·Granted Dec 22, 1998·1 cites·21 claims
- 2321US4430056APressure actuated seal for travelling grateHANNA MINING CO·Filed 1982·Granted Feb 7, 1984·3 cites·26 claims
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