Inventor

TUTTLE LAWRENCE L

4 patents

Patents

4 patents

US4256553AMar 17, 1981

Recovering copper from chalcopyrite concentrate

ENVIROTECH CORP72 citations92

US4290865ASep 22, 1981

Recovering copper from a copper-bearing source

ENVIROTECH CORP10 citations70

US4359376ANov 16, 1982

Recovering copper from a copper-bearing source

ENVIROTECH CORP4 citations59

US4217916AAug 19, 1980

Countercurrent washer

ENVIROTECH CORP3 citations51