Patents by Inventor Joseph Teja, Jr.

Joseph Teja, 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).

  • Laminated waveguiding polarizer utilizing polymeric birefringent cladding
    Patent number: 5202938
    Abstract: A waveguiding polarizer utilizing a birefringent polymer film cladding layer is disclosed and claimed. The cladding layer may be a spin-coated polyimide, polyarylate, polyaramide or like polymer. Core and cladding layers are selected so that waveguiding conditions are achieved for light of predetermined polarity, for example, a transverse magnetic mode only.
    Type: Grant
    Filed: November 25, 1991
    Date of Patent: April 13, 1993
    Assignee: Hoechst Celanese Corp.
    Inventors: Hong-Tai Man, Joseph Teja, Jr., Kazutaka Oba