Patents by Inventor Edward A. Wang

Edward A. Wang 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).

  • Silicon coated mylar beamsplitter
    Patent number: 5675414
    Abstract: The invention disclosed relates to an interferometer for the far-infrared which provides a high operating efficiency over the spectral range of 50 to 1000 cm.sup.-1. The beamsplitter component comprises a composite of a thin, substantially uniformly thick synthetic resin film having low far-infrared absorption, selected from polyethyleneterephthalate and polypropylene, and a thin substantially uniformly thick coating of germanium. An improved interferometer including a beamsplitter formed of the composite is also disclosed.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: October 7, 1997
    Assignee: National Research Council of Canada
    Inventors: Nelson L. Rowell, Edward A. Wang
  • Silicon coated mylar beamsplitter
    Patent number: 5558934
    Abstract: The invention disclosed relates to a composite material for use in a beamsplitter for the far infrared which provides a high operating efficiency over the spectral range of 50 to 550 cm.sup.-1. The composite comprises a thin, substantially uniformly thick synthetic resin film having low far infrared absorption, preferably polyethyleneterephthalate, and a thin substantially uniformly thick coating of a transparent material having an index of refraction of about twice that of the substrate, preferably of germanium. An improved interferometer including a beamsplitter formed of the composite is also disclosed.
    Type: Grant
    Filed: November 30, 1994
    Date of Patent: September 24, 1996
    Assignee: National Research Council of Canada
    Inventors: Nelson L. Rowell, Edward A. Wang
  • Drill guide for precise drilling
    Patent number: 4961674
    Abstract: A drilling guide for providing stability, direction, force and depth control for precise drilling comprises a hollow shaft attached to drill shaft casing, a telescopic housing connected to hollow shaft with a close coil spring, a depth measuring scale and a set of locknuts as depth controlling device. The threaded portion of hollow shaft provides means for depth measuring and controlling surface and nonthreaded portion and outward flange provides means for direction guidance for the housing. The housing which could protect adjacent objects from drilling relatively moves upwardly during downward movement of hollow shaft and stops at where locknuts are located. The housing comprises a serrated edge for aiding stability and vented holes for exiting drilling byproduct. The close coil spring can provide consistent resistance to prevent unexpected plunging of drill bit and can bring the drill bit back to the original position following the same path of drilling.
    Type: Grant
    Filed: July 21, 1989
    Date of Patent: October 9, 1990
    Inventors: Edward A. Wang, George M. Kung