Patents by Inventor Kenneth M. Ma

Kenneth M. Ma 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).

  • Coupling of multiple physiological signals across an isolation barrier
    Patent number: 4461302
    Abstract: A system for coupling a plurality of physiological signals across an isolation barrier. A plurality of physiological signals received at a number of signal inputs on the isolated side of the barrier are sampled during separate time periods and coupled to the primary winding of a transformer. The direction of signal flow through the primary winding is reversed during each said period. A pair of serial pulses of opposed polarities are induced in the secondary winding for each sampled signal. The pairs of serial pulses induced in the secondary winding are reconverted to the plurality of physiological signals on the non-isolated side of the barrier.
    Type: Grant
    Filed: March 19, 1982
    Date of Patent: July 24, 1984
    Assignee: American Home Products Corporation
    Inventors: Patrick G. Phillipps, Kenneth M. Ma