P

Inventor

SCHEITHAUER RICHARD A

US20 patents

Patents

20 patents
US4348224ASep 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