Patents Assigned to Prototech Company
  • Finely particulated colloidal platinum compound and sol for producing the same, and method of preparation
    Patent number: 3992512
    Abstract: This disclosure deals with novel very fine, particulated colloidal platinum of the 15-25 Angstrom size range of unusual catalytic activity and particularly adapted for adsorption upon various substrata, and produced from a new platinum sulfite acid and a sol derived therefrom, with novel methods of preparation thereof being disclosed.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: November 16, 1976
    Assignee: Prototech Company
    Inventors: Henry G. Petrow, Robert J. Allen
  • Catalytic platinum metal particles on a substrate and method of preparing the catalyst
    Patent number: 3992331
    Abstract: This disclosure deals with novel very fine, particulated colloidal platinum of the 15-25 Angstrom size range of unusual catalytic activity and particularly adapted for adsorption upon various substrate for use as catalytic structures and the like, and produced from a new platinum sulfite acid and a sol derived therefrom.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: November 16, 1976
    Assignee: Prototech Company
    Inventors: Henry G. Petrow, Robert J. Allen
  • Method of forming palladium oxide and palladium particles
    Patent number: 3933684
    Abstract: This disclosure deals with a novel catalytic structure embodying palladium metal particles (and in some instances palladium and gold metal particles) in the approximately 20-40 Angstrom size range on high surface area substrates useful as electrochemical cell electrodes, oxidation process catalysts and the like, and preferably formed from a colloidal sol of corresponding palladium oxide (and gold oxide) particles which are reduced on the substrate to the metal.
    Type: Grant
    Filed: September 7, 1973
    Date of Patent: January 20, 1976
    Assignee: Prototech Company
    Inventors: Henry G. Petrow, Robert J. Allen