Patents by Inventor John Allen Mitchell

John Allen Mitchell 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).

  • Enclosure cap for multiple piercing
    Patent number: 6068150
    Abstract: An elastic stopper and an enclosure cap incorporating the stopper for sealing a vial while allowing piercing of the stopper. The stopper includes a disk-shaped upper portion and a cylindrical-shaped lower portion defining an interior hollow space. The lower portion is divided into a plurality of longitudinal segments by a plurality of slots. A plurality of longitudinal grooves are provided on the inside surface of the lower portion to break the surface tension between the stopper and the liquid contents of the vial that flow into the hollow space of the cap. The enclosure cap allows multiple piercing without leakage of the vial contents and prevents the vial contents from aspirating out when the stopper is pierced with a single lumen needle.
    Type: Grant
    Filed: January 27, 1999
    Date of Patent: May 30, 2000
    Assignee: Coulter International Corp.
    Inventors: John Allen Mitchell, Kimberlee Elizabeth Guitar, David Borenstein