Patents by Inventor George N. B. Burch

George N. B. Burch 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).

  • Prevention of odor generation during gamma-irradiation of polypropylene fibers
    Patent number: 5041483
    Abstract: Rosin esters are used to reduce the tendency of shaped articles made from polypropylene, especially fibers, to form malodorous decomposition products upon sterilization by gamma-irradiation. Other stabilizers normally used to prevent discoloration and degradation of polyolefins may also be present. Stabilized fibers are used for the manufacture of disposable medical products.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: August 20, 1991
    Assignee: Hercules Incorporated
    Inventor: George N. B. Burch
  • Radiation resistant polypropylene-containing products
    Patent number: 4739025
    Abstract: A product and method for obtaining a radiation-resistant polyolefin-containing product, by handling and processing the corresponding homopolymer or copolymer melt and resulting extrudate in a manner favoring retention of a high smectic and less than about 20 wt % monoclinic configuration.
    Type: Grant
    Filed: May 5, 1986
    Date of Patent: April 19, 1988
    Assignee: Hercules Incorporated
    Inventor: George N. B. Burch