Patents by Inventor Douglas J. Van Den Broeke

Douglas J. Van Den Broeke 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).

  • Binary and phase-shift photomasks
    Patent number: 6569580
    Abstract: The present invention relates to photomasks for use in semiconductor chip manufacture.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: May 27, 2003
    Assignee: Diverging Technologies, Inc.
    Inventors: Jim G. Campi, Douglas J. Van Den Broeke
  • Binary and phase-shift photomasks
    Publication number: 20030022072
    Abstract: The present invention relates to photomasks for use in semiconductor chip manufacture.
    Type: Application
    Filed: March 13, 2001
    Publication date: January 30, 2003
    Applicant: Diverging Technologies, Inc.
    Inventors: Jim G. Campi, Douglas J. Van Den Broeke