Patents by Inventor Paul G. Grimshaw

Paul G. Grimshaw 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).

  • Reducing noise in a biological signal
    Patent number: 5908393
    Abstract: A method of reducing noise in a biological signal, such as an ECG signal, includes acquiring a biological signal, comparing the biological signal to a representative signal, and generating a predicted signal corresponding to the representative signal when the biological signal sufficiently matches the representative signal. The predicted signal is subtracted from the biological signal to produce a second signal, and a filter is applied to the second signal to produce a filtered signal. The predicted signal and the filtered signal then are combined to produce a noise-reduced signal.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: June 1, 1999
    Assignee: Cambridge Heart, Inc.
    Inventors: Paul Albrecht, Paul G. Grimshaw, Kevin S. Librett, Jeffrey M. Arnold