Patents by Inventor Gary D. Christiansen

Gary D. Christiansen 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).

  • Blood gas controls composition, method and apparatus
    Patent number: 4289648
    Abstract: A hermetically sealed ampoule containing blood gas control fluid is provided wherein the fluid occupies the entire ampoule with no appreciable head space. The ampoule is provided with a plunger-like seal adapted to be directed against the contents of the ampoule and a pierceable seal through which may extend a hollow needle to act as a conduit for the contents upon expulsion from the ampoule. A syringe is also provided for expelling the contents from the ampoule.
    Type: Grant
    Filed: March 20, 1979
    Date of Patent: September 15, 1981
    Assignee: Ortho Diagnostics, Inc.
    Inventors: Michael K. Hoskins, Gary D. Christiansen