Patents by Inventor James Samuel Nelson Dalton

James Samuel Nelson Dalton 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).

  • Polyester and optical brightener blend having improved properties
    Patent number: 5985389
    Abstract: The present invention is a compositional blend having a polyester, an acetaldehyde reduction compound and less than 50 ppm of an optical brightener. The blend has utility for food and beverage molded containers where improved clarity and flavor retention are important without producing a haze. The acetaldehyde reduction compound can be a low molecular weight partially aromatic polyamide, a low molecular weight aliphatic polyamides or polyesteramide. The optical brightener preferably is a bis(benzoxazolyl) stilbene. Articles, and especially beverage containers, produced from the blend have a yellowness, b*, less than about 2.5.
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: November 16, 1999
    Assignee: Eastman Chemical Company
    Inventors: James Samuel Nelson Dalton, Steven Lee Stafford, John David Hewa