Patents by Inventor Gergory Halpern

Gergory Halpern has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of hydrophilic coating of plastics
    Patent number: 4959074
    Abstract: Plastics, particularly a method of hydrophilic coating of plastics, for example, a contact lens, with a lubricating and visually acute mucopolysaccharide film which is immobilized upon the surface of the plastic for the lifetime of the plastic. A preferred method includes first coating the plastic with an aqueous solution of a mucopolysaccharide, drying by applying a water-miscible solvent, then crosslinking and permanently immobilizing the first coating upon the plastic by applying a solution of catalyzed organic solution aliphatic polyisocyanates.
    Type: Grant
    Filed: May 25, 1988
    Date of Patent: September 25, 1990
    Inventors: Gergory Halpern, Charles Campbell, Ellington M. Beavers, Huk Y. Chen