Patents by Inventor John Buttermore

John Buttermore 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).

  • Nitrogen blow molding to enhance oxygen scavenger shelf-life
    Patent number: 6893588
    Abstract: A method of manufacturing a container for containing an oxygen sensitive products from a heated plastic by blow molding the plastic with a compressed gas that is inert to the oxygen sensitive product. The heated plastic may contain an oxygen barrier layer or an oxygen scavenging component. The gas is also inert to the oxygen scavenging component, if it is present. An exemplary compressed gas is nitrogen gas. The blow molding may be extrusion blow molding, injection blow molding or stretch blow molding. The plastic may be, for example, a polyolefin, a nylon, or a polyester.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: May 17, 2005
    Assignee: Graham Packaging Company, L.P.
    Inventors: Anne M. Lawson, John Buttermore
  • Nitrogen blow molding to enhance oxygen scavenger shelf-life
    Publication number: 20040256758
    Abstract: A method of manufacturing a container for containing an oxygen sensitive product from a heated plastic by blow molding the plastic with a compressed gas that is inert to the oxygen sensitive product. The heated plastic may contain an oxygen barrier layer or an oxygen scavenging component. The gas is also inert to the oxygen scavenging component, if it is present. An exemplary compressed gas is nitrogen gas. The blow molding may be extrusion blow molding, injection blow molding or stretch blow molding. The plastic may be, for example, a polyolefin, a nylon, or a polyester.
    Type: Application
    Filed: June 23, 2003
    Publication date: December 23, 2004
    Applicant: Graham Packaging Company, L.P.
    Inventors: Anne M. Lawson, John Buttermore