Inventor

VANDERPOOL CLARENCE D

US55 patents

⚠️ This page may combine multiple inventors who share the name “VANDERPOOL CLARENCE D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

VANDERPOOL CLARENCE D

GTE PROD CORP

Process for recovery of chromium

Recovery of tungsten, scandium, iron, and manganese values from tungsten bearing material

Recovery of tungsten from heavy metal alloys

Recovery of tungsten, scandium, iron, and manganese from tungsten bearing material

Recovery of tungsten, scandium, iron, and manganese values from tungsten bearing material

Recovery of tungsten, scandium, iron, and manganese from tungsten bearing material

Method for producing cobalt metal powder

Method for producing cobalt metal powder

Method for recovering cobalt from hexammine cobaltic (111) solutions

Method for producing ammonium paratungstate

Production of pure cobalt metal powder

Process for reclaiming tungsten from a hazardous waste

Method for producing cobalt metal powder

Electrolytic disintegration of sintered metal carbides

Process for recovering cobalt

Process for recovering tungsten as an ammoniacal tungstate compound in which ammoniacal tungstate liquors are reclaimed

Recovery of tungsten, scandium, iron, and manganese from tungsten bearing material

Method of producing crystalline ammonium metatungstate

Process for recovering gold

Method for producing cobalt metal powder

Method for producing cobalt metal powder

Electrolytic method for producing ammonium paratungstate from cemented tungsten carbide

Process for recovering tungsten from tungsten bearing material containing arsenic

Process for producing cobalt metal powder

Recovery of tungsten from ammoniacal solutions

Process for producing ammonium paratungstate

Recovery of cobalt

Recovery of cobalt and chromium

Recovery of molybdenum from molybdenum disulfide

Recovery of cobalt

Method for producing cobalt metal powder

Process for preparing ammonium metatungstate

Method for purifying sulfuric acid solutions

Method for converting cobalt to cobalt metal powder

Chromium-cobalt fine alloy powder and process for producing same

Recovery of tungsten from heavy metal alloys

Recovery of tungsten and molybdenum

Recovery of refractory metal values from scrap cemented carbide

Method for recovery of tungsten from spent catalysts

GTE SYLVANIA INC

Preparation of heteropoly acids of tungsten and molybdenum

Coated phosphors and articles employing same

Method for producing cobalt metal powder

Process for the manufacture of ammonium tungstate ammonium paratungstate, ammonium metatungstate and hydrated tungsten trioxide

Method for producing extra fine cobalt metal powder

Coated phosphors and articles employing same

Process for the reclamation of uncemented tungsten carbide powders

OSRAM SYLVANIA INC

Process for producing electroluminescent phosphor with extended half-life

Stabilization of color in heated electroluminescent phosphor

Electroluminescent phosphor with extended life and method of making same

GTE SERVICE CORP

Coated phosphors and articles employing same