Patents by Inventor Stephen W. Frommer

Stephen W. Frommer 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).

  • Method using corrective factors for aligning a magnetic gradiometer
    Patent number: 6008641
    Abstract: Inventive electrical-computational method and system for aligning a magnetic gradiometer, and for determining magnetic gradients using a magnetic gradiometer which is inventively aligned. For each correlation of a correction magnetometer's vector with a reference magnetometer's vector, three correction coefficients and an offset coefficient are evaluated, using a mathematical approximation technique (such as least-squares) upon voltage outputs for various relative orientations of magnetic fields in relation to a magnetic gradiometer. An inventive matrix formula is used for determining magnetic gradients. A correction magnetometer matrix (matrix of voltages generated by each correction vector of the correction magnetometer) is multiplied by a coefficient matrix (matrix of correction and offset coefficients).
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: December 28, 1999
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Barry Penfold, Stephen W. Frommer
  • Method using corrective factors for determining a magnetic gradient
    Patent number: 5990679
    Abstract: Inventive electrical-computational method and system for aligning a magnetic gradiometer, and for determining magnetic gradients using a magnetic gradiometer which is inventively aligned. For each correlation of a correction magnetometer's vector with a reference magnetometer's vector, three correction coefficients and an offset coefficient are evaluated, using a mathematical approximation technique (such as least-squares) upon voltage outputs for various relative orientations of magnetic fields in relation to a magnetic gradiometer. An inventive matrix formula is used for determining magnetic gradients. A correction magnetometer matrix (matrix of voltages generated by each correction vector of the correction magnetometer) is multiplied by a coefficient matrix (matrix of correction and offset coefficients).
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: November 23, 1999
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Stephen W. Frommer, Barry Penfold