Patents Assigned to Prototech, Inc.
  • Finely particulated colloidal platinum, compound and sol for producing the same, and method of preparation
    Patent number: 4102819
    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.
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: July 25, 1978
    Assignee: Prototech, Inc.
    Inventors: Henry G. Petrow, Robert J. Allen