Patents by Inventor John N. Drummond

John N. Drummond 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).

  • Cryogenic, elastomeric closure for cryogen containers
    Patent number: 8092878
    Abstract: A multi-material, cryogenic, elastomeric closure is provided for sealing a container for samples of cryophilic biological materials, pharmaceuticals or the like. The closure includes at least one cryophilic elastomer having a glass transition temperature (Tg) below the cryogenic temperature to which the sample is to be subjected and at least one non-cryophilic elastomer having a Tg above the cryogenic temperature. The cryophilic and non-cryophilic elastomers are present in such a manner as to maintain a complete seal of the container opening at the cryogenic temperature.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: January 10, 2012
    Assignee: West Pharmaceutical Services, Inc.
    Inventors: Timothy M. Miller, John N. Drummond, Douglas R. Duriez