Patents by Inventor Stephen Entrekin

Stephen Entrekin 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).

  • Freezing agent and container
    Patent number: 4597266
    Abstract: A freezing agent for maintaining supercold temperatures. Solid carbon dioxide is impregnated with liquid nitrogen so that the liquid nitrogen diffuses through the lattice of crystals making up the solid carbon dioxide. The liquid nitrogen maintains the solid carbon dioxide at supercold temperature for a long period of time. The nitrogen-impregnated solid carbon dioxide can be in the form of nuggets for lining or packing a cooling container, and a frozen biological sample can be maintained at supercold temperature within the container for many hours.
    Type: Grant
    Filed: May 28, 1985
    Date of Patent: July 1, 1986
    Assignee: CryoLife, Inc.
    Inventor: Stephen Entrekin