Patents by Inventor Richard E. Van Strien

Richard E. Van Strien 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).

  • Polyamide-imides prepared from 4-carboxy-phthalimide aliphatic carboxylic acids
    Patent number: 4041065
    Abstract: Amide-imide type polymers containing amide derivatives of 4-carboxy-phthalimide aliphatic carboxylic acids are useful as wire coatings and in film and molding applications.
    Type: Grant
    Filed: January 24, 1975
    Date of Patent: August 9, 1977
    Assignee: Standard Oil Company (Indiana)
    Inventors: Steven E. Lindberg, Kerford A. Marchant, Jr., Richard E. Van Strien