Patents by Inventor Irving Charles Kogon

Irving Charles Kogon 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).

  • Polyurethane elastomers having a compression set of 50 or less
    Patent number: 3997514
    Abstract: A polyurethane composition is prepared by (1) reacting excess polyalkylene ether or polyester glycol with an aromatic diisocyanate, (2) reacting the product of (1) with excess aliphatic diisocyanate, and (3) curing the resulting prepolymer with an aromatic diamine.
    Type: Grant
    Filed: April 30, 1975
    Date of Patent: December 14, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Irving Charles Kogon