Patents by Inventor Mitchell Z. Weekley

Mitchell Z. Weekley 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).

  • Asphalt filled polymer foam
    Publication number: 20030100621
    Abstract: This invention relates to foam insulating products, particularly extruded polystyrene foam, containing asphalt as an infrared attuation and process additives for improving the insulating properties and for reducing the manufacturing cost of the foam products.
    Type: Application
    Filed: October 25, 2001
    Publication date: May 29, 2003
    Inventors: Roland R. Loh, Barbara A. Fabian, Sheree L. Bargabos, Mitchell Z. Weekley, Byron J. Hulls, J. Patrick Rynd
  • Process for producing extruded foam products with higher levels of CO2 as a blowing agent
    Patent number: 6187831
    Abstract: In one embodiment, the present invention relates to a process for preparing a foam product involving the steps of (A) forming a foamable mixture of (1) a polymer comprising about 10% to about 90% monomers of at least one of meta-substituted styrene and para-substituted styrene and 0% to about 90% monomers of styrene, and (2) a blowing agent containing a major amount of carbon dioxide under a pressure sufficient to prevent prefoaming of the mixture and (B) foaming the mixture into a region of reduced pressure to form the foam product.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: February 13, 2001
    Assignee: Owens Corning Fiberglas Technology, Inc.
    Inventors: Larry M. Miller, Raymond M. Breindel, Mitchell Z. Weekley
  • Process for producing extruded foam products having polystyrene blends with high levels of CO.sub.2 as a blowing agent
    Patent number: 6123881
    Abstract: In one embodiment, the present invention relates to a process for preparing foam board or sheet including the steps of (A) forming a foamable mixture of (1) a major amount of a styrenic polymer having a high melt index, (2) a minor amount of a low melt index styrenic polymer, and (3) a blowing agent containing a major amount of carbon dioxide under a pressure sufficient to prevent prefoaming of the mixture, and (B) foaming the mixture into a region of reduced pressure to form a foam product.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: September 26, 2000
    Assignee: Owens Corning Fiberglas Technology, Inc.
    Inventors: Larry M. Miller, Raymond M. Breindel, Mitchell Z. Weekley
  • Process for producing foam by monitoring key process parameters
    Patent number: 6093352
    Abstract: In one embodiment, the present invention relates to a process for preparing a foam product including the steps of (A) forming a foamable mixture of (1) an alkenyl aromatic polymer and (2) a blowing agent under a pressure sufficient to prevent prefoaming of the mixture and (B) foaming the mixture into a region of reduced pressure to form the foam product, wherein the difference between the glass transition temperature of the foamable mixture and the foaming temperature is less than about 62.degree. C.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: July 25, 2000
    Assignee: Owens Corning Fiberglas Technology, Inc.
    Inventors: Larry M. Miller, Raymond M. Breindel, Mitchell Z. Weekley