Patents by Inventor John David Bierlein

John David Bierlein 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).

  • Crystals of (K, Rb, NH.sub.4)TiO(P, As)O.sub.4 and their use in electrooptic devices
    Patent number: 3949323
    Abstract: Crystals of compounds of the type (K, Rb, Tl, NH.sub.4)TiO(P, As)O.sub.4 with the proviso that when NH.sub.4 is present, As is absent, can be grown by hydrothermal methods. The crystals are optically biaxially positive, and piezoelectric and are useful in parametric amplifiers, oscillators, second harmonic generators, modulators and the like.
    Type: Grant
    Filed: March 14, 1974
    Date of Patent: April 6, 1976
    Assignee: E. I. Du Pont de Nemours & Company
    Inventors: John David Bierlein, Thurman Eugene Gier