Patents by Inventor Debra A. Gernhart

Debra A. Gernhart 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 and apparatus for the cross-sectional design of multi-layer printed circuit boards
    Patent number: 5546321
    Abstract: Disclosed is a design tool and a method of fabricating a multi-layer printed circuit board. The method utilizes the design tool. The knowledge base means has both (1) printed circuit board cross sectional geometric parameter to transmission line parameter data and (2) "IF . . . THEN . . . " production rules for lamination, registration, circuitization, testability, test tools, and test procedures. These tools relate to manufacturability, cost, test development, second level packaging and printed circuit board. The printed circuit board begins with the user entering the printed circuit board design parameters and performance parameters into the input/output interface. Next, the knowledge base production rules are applied to the printed circuit board design and performance parameters to generate a set of cross section designs meeting the user specified parameters. The printed circuit board is then built up in accordance with one of the generated cross section designs.
    Type: Grant
    Filed: August 23, 1995
    Date of Patent: August 13, 1996
    Assignee: International Business Machines Corporation
    Inventors: Chi S. Chang, Subahu D. Desai, Debra A. Gernhart, Phillip A. Hartley, Robert J. Haskins, Jr., Keith K. T. Ho, Robert A. Martone, Roy T. Mulcahy, Louis J. Shaffer, Robert D. Schoening, Scott A. Versprille
  • Method and apparatus for the cross-sectional design of multi-layer printed circuit boards
    Patent number: 5519633
    Abstract: Disclosed is a design tool and a method of fabricating a multi-layer printed circuit board. The method utilizes the design tool. The knowledge base means has both (1) printed circuit board cross sectional geometric parameter to transmission line parameter data and (2) "IF . . . THEN . . . " production rules for lamination, registration, circuitization, testability, test tools, and test procedures. These tools relate to manufacturability, cost, test development, second level packaging and printed circuit board. The printed circuit board begins with the user entering the printed circuit board design parameters and performance parameters into the input/output interface. Next, the knowledge base production rules are applied to the printed circuit board design and performance parameters to generate a set of cross section designs meeting the user specified parameters. The printed circuit board is then built up in accordance with one of the generated cross section designs.
    Type: Grant
    Filed: March 8, 1993
    Date of Patent: May 21, 1996
    Assignee: International Business Machines Corporation
    Inventors: Chi S. Chang, Subahu D. Desai, Debra A. Gernhart, Phillip A. Hartley, Robert J. Haskins, Jr., Keith K. T. Ho, Robert A. Martone, Roy T. Mulcahy, Louis J. Shaffer, Robert D. Schoening, Scott A. Versprille