Patents by Inventor Michiyuki Sawada

Michiyuki Sawada 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).

  • Patent number: 4315186
    Abstract: Provided is a reflective lamp comprising a bulb including a front lens section and a reflective mirror section fused thereto, said front lens section consisting of glass material containing neodymium and coated on its inner surface with a first thin film reflecting infrared rays and permitting visible lights to be transmitted therethrough, said reflective mirror section consisting of glass material containing no neodymium and coated on its inner surface with a second thin film reflecting visible lights. The lamp is capable of preventing the rise in the temperature of the bulb and yet providing a sufficiently high color rendering. Further, the lamp can offer the advantage of reducing its manufacturing cost.
    Type: Grant
    Filed: June 26, 1979
    Date of Patent: February 9, 1982
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Tomiyoshi Hirano, Hidehiro Shinada, Michiyuki Sawada