Patents by Inventor William F. Lenzke, Jr.

William F. Lenzke, Jr. 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 illuminating projecting features on the surface of a semiconductor wafer
    Patent number: 6547409
    Abstract: Plural light sources are provided for directing ring patterns of light toward at least one reflective bump formed on and projecting from a first wafer surface of a semiconductor wafer. The intensity of light from the light sources may be varied and may be varied independently of one another.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: April 15, 2003
    Assignee: Electroglas, Inc.
    Inventors: Cary S. Kiest, William F. Lenzke, Jr.