Inventor
SCHEITHAUER RICHARD A
US20 patents
Patents
20 patentsUS4348224ASep 7, 1982
Method for producing cobalt metal powder
GTE PROD CORP25 citations82
US4804407AFeb 14, 1989
Method for recovering cobalt from hexammine cobaltic (111) solutions
GTE PROD CORP9 citations74
US4623534ANov 18, 1986
Method for producing ammonium paratungstate
GTE PROD CORP7 citations74
US4612039ASep 16, 1986
Production of pure cobalt metal powder
GTE PROD CORP7 citations74
US4454098AJun 12, 1984
Process for reclaiming tungsten from a hazardous waste
GTE PROD CORP8 citations74
US4395278AJul 26, 1983
Method for producing cobalt metal powder
GTE PROD CORP12 citations74
US4329169AMay 11, 1982
Method for producing cobalt metal powder
GTE PROD CORP11 citations73
US4452633AJun 5, 1984
Method for producing cobalt metal powder
GTE PROD CORP8 citations72
US4381937AMay 3, 1983
Method for producing cobalt metal powder
GTE PROD CORP8 citations72
US4965116AOct 23, 1990
Method for separation of cobalt from nickel
GTE PROD CORP2 citations63
US4741886AMay 3, 1988
Process for recovering tungsten from tungsten bearing material containing arsenic
GTE PROD CORP4 citations63
US4690710ASep 1, 1987
Process for producing cobalt metal powder
GTE PROD CORP4 citations63
US4626425ADec 2, 1986
Recovery of tungsten from ammoniacal solutions
GTE PROD CORP4 citations63
US4624844ANov 25, 1986
Process for producing ammonium paratungstate
GTE PROD CORP5 citations63
US4608235AAug 26, 1986
Recovery of cobalt
GTE PROD CORP4 citations63
US4608084AAug 26, 1986
Recovery of cobalt and chromium
GTE PROD CORP5 citations63
US4594230AJun 10, 1986
Recovery of cobalt
GTE PROD CORP6 citations63
US4552729ANov 12, 1985
Method for removing tin from sodium tungstate solution
GTE PROD CORP3 citations62
US4448755AMay 15, 1984
Method for removal of tin from ammonium tungstates
GTE PROD CORP5 citations62
US4432950AFeb 21, 1984
Recovery of refractory metal values from scrap cemented carbide
GTE PROD CORP2 citations56