Patents by Inventor Dan Charles Krupka

Dan Charles Krupka 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).

  • Fabrication of a self-aligned mirror on a solid-state laser for controlling filamentation
    Patent number: 4001719
    Abstract: A very small high-reflectivity mirror surrounded by a low-reflectivity region is fabricated in a self-aligned manner directly on one of the output faces of a stripe-geometry solid-state laser. The phenomenon known as filamentation is thereby effectively controlled.
    Type: Grant
    Filed: August 13, 1975
    Date of Patent: January 4, 1977
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Dan Charles Krupka