Patents by Inventor Daniel G. Berry

Daniel G. Berry 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).

  • Automatic mask alignment
    Patent number: 4353087
    Abstract: A target for use in aligning masks used in producing microcircuits which is of a size that can be printed on a microcircuit chip without interfering with the lines thereon, consisting only of lines vertically or diagonally disposed with respect to the image transducer is disclosed. Also disclosed is an automatic system for aligning such targets.
    Type: Grant
    Filed: March 12, 1979
    Date of Patent: October 5, 1982
    Assignee: The Perkin-Elmer Corporation
    Inventors: Daniel G. Berry, David A. Markle