Patents by Inventor Robert P. Rossman

Robert P. Rossman 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 for low pressure testing of a solid state pressure sensor
    Patent number: 4777716
    Abstract: A miniature vacuum chamber that is capable of testing individual dice prior to packaging is described. The upper portion of the chamber consists of a housing having testing probes and a vacuum inlet disposed therein. The lower portion of the chamber consists of a chuck that holds a wafer and a lower vacuum chamber. The lower portion is indexed to place a dice in contact with the probes. The upper and lower portions then form a seal and a vacuum is drawn in the area defined by the upper and lower chambers. The dice is then tested; the area pressurized; and the chuck indexed to test the next dice.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: October 18, 1988
    Assignee: Motorola Inc.
    Inventors: Lee E. Folk, William B. Newton, Robert P. Rossman
  • Method and apparatus for low pressure testing of a solid state pressure sensor
    Patent number: 4733553
    Abstract: The present invention consists of a miniature vacuum chamber that is capable of testing individual dice prior to packaging. The upper portion of the chamber consists of a housing having testing probes and a vacuum inlet disposed therein. The lower portion of the chamber consists of a chuck that holds a wafer and a lower vacuum chamber. The lower portion is indexed to place a dice in contact with the probes. The upper and lower portions then form a seal and a vacuum is drawn in the area defined by the upper and lower chambers. The dice is then tested; the area pressurized; and the chuck indexed to test the next dice.
    Type: Grant
    Filed: August 25, 1986
    Date of Patent: March 29, 1988
    Assignee: Motorola Inc.
    Inventors: Lee E. Folk, William B. Newton, Robert P. Rossman