Patents by Inventor Joanne Cameron

Joanne Cameron 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 coplanarity inspection of package or substrate warpage for ball grid arrays, column arrays, and similar structures
    Patent number: 5465152
    Abstract: A method for determining coplanarity with 3-D sensing means of substrates for ball grid array, column grid array, and similar surface mount integrated circuit chips, in which opaque fiducials are provided as index pads. Heights of the index pads are correlated with signal pad heights in a neighborhood about the index pads. The index pads are opaque to incident radiation from the 3-D sensor. The index pads reflect sufficient radiation to be detected easily by the 3-D sensor. The index pads are disposed in a prearranged pattern over a domain of ball grid array signal pads. The index pads are restricted to a predetermined range of heights.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: November 7, 1995
    Assignee: Robotic Vision Systems, Inc.
    Inventors: Steve Bilodeau, Frank Jacovino, Joanne Cameron, James Cain