Patents by Inventor Johannes H. Keizer

Johannes H. Keizer 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).

  • Apparatus for monitoring metabolism in body organs
    Patent number: 4380240
    Abstract: A mounting structure secures to a selected portion of the human body, e.g., the head, a limb, or the torso, and incorporates light source and light detecting means adapted for association with spectrophotometric circuitry for in situ, in vivo monitoring of local metabolism in the area of the body where the structure is secured.
    Type: Grant
    Filed: August 3, 1981
    Date of Patent: April 19, 1983
    Assignee: Duke University, Inc.
    Inventors: Frans F. Jobsis, Johannes H. Keizer, Ronald F. Overaker
  • Apparatus for monitoring metabolism in body organs
    Patent number: 4321930
    Abstract: A mounting structure secures to a selected portion of the human body, e.g., the head, a limb, or the torso, and incorporates light source and light detecting means adapted for association with spectrophotometric circuitry for in situ, in vivo monitoring of local metabolism in the area of the body where the structure is secured.
    Type: Grant
    Filed: September 18, 1980
    Date of Patent: March 30, 1982
    Assignee: Duke University, Inc.
    Inventors: Frans F. Jobsis, Johannes H. Keizer, Ronald F. Overaker