Patents by Inventor John Riddick

John Riddick 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).

  • Publication number: 20090046281
    Abstract: A method and system characterizing and monitoring an automated inspection system are provided. A method for automatically characterizing an automatic inspection system for photomasks may include removing portions of an optical attenuator layer disposed on a substrate in order to expose portions of the substrate and create a plurality of test features. The may further include forming a plurality of programmed defects, on the optical attenuator layer, the plurality of programmed defects comprising at least one of an optical reflector and an optical absorber.
    Type: Application
    Filed: August 16, 2007
    Publication date: February 19, 2009
    Inventors: Joseph Straub, Colleen Weins, Anthony Nhiev, John Riddick, Daniel Aguilar