Patents by Inventor Gary Brewster

Gary Brewster 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).

  • Preform and bottle using pet/pen blends and copolymers
    Patent number: 5888598
    Abstract: The present invention relates to an injection molded preform comprising an open ended mouth forming portion, an intermediate body forming portion, and a closed base forming portion, wherein said preform comprises (1) a blend of (i) PEN copolymer and (ii) PET homopolymer or PET copolymer, such that when said PET and PEN components are physically mixed into a blend, said blend has about 5-70 wt %. PEN copolymer and 30 to 95 wt % PET homopolymer of copolymer therein, (2) a PEN copolymer, or (3) PEN homopolymer, and said preform having a stretch ratio in the range of 18:1 to 25:1 in order form a bottle having a volume in the range of 250 ml to 850 ml, wherein the stretch index is below 130 cm. Alternatively, said preform has a stretch ratio in the range of 18:1 to 20:1 in order to form a bottle having a volume in the range of 250 ml to 1000 ml. The invention further relates to an injection mold defining a cavity corresponding to an injection molded preform of the invention.
    Type: Grant
    Filed: July 23, 1996
    Date of Patent: March 30, 1999
    Assignee: The Coca-Cola Company
    Inventors: Gary Brewster, Scott W. Steele, Sumit Mukherjee