Patents by Inventor C. Paul Christensen, Jr.

C. Paul Christensen, 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).

  • Optical harmonic microscope assembly and examination method
    Patent number: 4063804
    Abstract: An optical harmonic microscope assembly and an examination method which provides for focusing lased coherent light as an incident beam onto a specimen, disposing the optical path of a microscope and the incident beam at a relative angle in a range which is at least as broad as 0.degree.-90.degree., blocking the fundamental frequency of the lased light and viewing light of a harmonic of said fundamental frequency generated by nonlinear diffraction by said specimen.
    Type: Grant
    Filed: May 29, 1975
    Date of Patent: December 20, 1977
    Assignee: The University of Southern California
    Inventors: Robert W. Hellwarth, C. Paul Christensen, Jr.