Patents by Inventor John F. Mandell

John F. Mandell 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).

  • Collapse resistant polyester container for hot fill applications
    Patent number: 4497855
    Abstract: A collapse resistant polyester container is provided for hot fill applications employing product fill temperatures up to about 190.degree. F. (87.8.degree. C.) or more. The container has at least one region which is thermoelastically deformable inwardly after the container is hot filled and sealed to offset the pressure forces which tend to collapse the container as the contents cool and create an internal vacuum. The thermoelastic region is preferably formed in a two step molding process in which the region is formed and heat set at a first position and then reformed outwardly to a second position and cooled in that position.
    Type: Grant
    Filed: May 6, 1981
    Date of Patent: February 5, 1985
    Assignee: Monsanto Company
    Inventors: Purushottam D. Agrawal, John F. Mandell
  • Method for producing a collapse resistant polyester container for hot fill applications
    Patent number: 4318882
    Abstract: A collapse resistant polyester container is provided for hot fill applications employing product fill temperatures up to about 190.degree. F. (87.8.degree. C.) or more. The container has at least one region which is thermoelastically deformable inwardly after the container is hot filled and sealed to offset the pressure forces which tend to collapse the container as the contents cool and create an internal vacuum. The thermoelastic region is preferably formed in a two step molding process in which the region is formed and heat set at a first position and then reformed outwardly to a second position and cooled in that position.
    Type: Grant
    Filed: February 20, 1980
    Date of Patent: March 9, 1982
    Assignee: Monsanto Company
    Inventors: Purushottam D. Agrawal, John F. Mandell