Patents by Inventor David Heineman

David Heineman 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).

  • Apparatus and method for optical switching with liquid crystals and birefringent wedges
    Patent number: 7499608
    Abstract: An optical switch includes an optical waveguide to route an input optical beam. At least one polarization switch receives the input optical beam from the optical waveguide. At least one birefringent wedge is associated with the at least one polarization switch. The at least one polarization switch and at least one birefringent wedge operate to direct the input optical beam to two or more output locations through control of the polarization switch.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: March 3, 2009
    Assignee: Coadna Photonics, Inc.
    Inventors: Jack R. Kelly, Mingji Cui, David Heineman, Hudson Washburn, Meng Xue