Patents by Inventor Jens Christian Tjell

Jens Christian Tjell 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).

  • Calcium electrode and membrane and composition for use therein
    Patent number: 3932233
    Abstract: Calcium di(aryl)phosphates, the aryl groups each carrying at least one carbon chain containing at least 3 carbon atoms, are used as electroactive materials in calcium electrodes. In a preferred calcium electrode, the calcium di(aryl)phosphate is calcium di(p-n-octylphenyl)phosphate which is incorporated in a membrane of polyvinyl chloride plasticized with di(p-n-octyl)-phenylphosphonate.
    Type: Grant
    Filed: September 28, 1973
    Date of Patent: January 13, 1976
    Assignee: Radiometer A/S
    Inventors: Jaromir Ruzicka, Jens Christian Tjell