Patents by Inventor Kazunari Fukue

Kazunari Fukue 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).

  • Incandescent lamp
    Patent number: 5719468
    Abstract: An incandescent lamp has an envelope including a cylindrical portion and two hemispherical portions. Each hemispherical portion includes a second order curve which has a focus and is connected at one end of the cylindrical portion, respectively. A filament is provided along the central axis of the envelope and is located within and extends beyond a space surrounded by the cylindrical portion. An optical interference layer is arranged on a surface of the envelope to reflect infrared rays and transmit visible rays.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: February 17, 1998
    Assignee: Toshiba Lighting Technology Corporation
    Inventors: Hiroyoshi Takanishi, Kazunari Fukue, Tsutomu Watanabe, Hiroshi Kamata, Akira Kawakatsu