Patents by Inventor Alan R. Pollack

Alan R. Pollack 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).

  • Biodegradable hydrophilic foams and method
    Patent number: 4132839
    Abstract: Disclosed herein are novel prepolymers which, when foamed provide hydrophilic polyurethane foams which are biodegradable.
    Type: Grant
    Filed: September 16, 1977
    Date of Patent: January 2, 1979
    Assignee: W. R. Grace & Co.
    Inventors: Nelson S. Marans, Alan R. Pollack