Patents by Inventor Taisuke Hirota

Taisuke Hirota 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).

  • Lighting lamp
    Patent number: 4954937
    Abstract: A lighting lamp is disclosed, comprising a lamp having laminated on the surface of a bulb thereof a display sheet, said display sheet comprising a support having thereon an active layer containing a pigment which is faded by the action of an active light and an active light-adjusting layer.
    Type: Grant
    Filed: September 8, 1989
    Date of Patent: September 4, 1990
    Assignees: Tomoegawa Paper Co., Ltd., Hitachi Ltd.
    Inventors: Yasuo Kobayashi, Naoki Hagiwara, Taisuke Hirota, Churyo Kodama, Yasuo Hirasawa, Katsumi Miyazaki, Fumio Kawamura, Takao Higashi, Masami Yanagisawa, Akinori Sei
  • Fluorescent lamp having reflective layer and a method for fabricating the same
    Patent number: 4336479
    Abstract: A fluorescent lamp with reflective layer of the present invention has a first phosphor layer and a second phosphor layer which are partially laminated. The first phosphor layer is formed on the whole inner surface of the glass tube, and the second phosphor layer is formed on the first phosphor layer at a predetermined angle of reflection along the axial direction of the glass tube. The laminated portions of the first and second phosphor layers substantially form a reflective layer, and the other portions form a transmitting layer.
    Type: Grant
    Filed: October 31, 1979
    Date of Patent: June 22, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Churyo Kodama, Taisuke Hirota, Hiroshi Ohno, Etsuo Urataki
  • Fluorescent lamp
    Patent number: D292130
    Type: Grant
    Filed: February 1, 1985
    Date of Patent: September 29, 1987
    Assignee: Hitachi, Ltd.
    Inventors: Kazuhiko Kubo, Masanori Tsuda, Taisuke Hirota, Katsuyuki Hosoya, Ichirou Torii, Atsushi Suzuki