Patents by Inventor Herbert F. Janssen

Herbert F. Janssen 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).

  • Venous pressure measuring method and apparatus
    Patent number: 4566462
    Abstract: Venous pressure is measured by monitoring blood flow in a vein with a Doppler probe, exerting pressure on the vein downstream of the probe with a cuff inflated at the rate of 10 mm Hg/second or more and recording the pressure at the instant blood flow stops. The cuff is immediately deflated. Measuring apparatus is also disclosed.
    Type: Grant
    Filed: November 21, 1983
    Date of Patent: January 28, 1986
    Assignee: School of Medicine Texas Tech. Univ. Health Servcs. Ctr.
    Inventor: Herbert F. Janssen