Patents by Inventor Yuuji Ishihara

Yuuji Ishihara 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).

  • Vehicular lamp
    Patent number: 8573822
    Abstract: In a vehicular lamp, a first zone includes a first incident portion disposed on a radiation axis. A first light guide portion guides light incident from the first incident portion forward. A first radiation portion formed from a first concave surface and a second concave surface deflects the light from the first light guide portion toward a lamp optical axis side and radiates such light forward in a diffused manner. A second zone includes a cylindrical second incident portion disposed on an outer side of the first incident portion. A second light guide portion that is longer in the direction of the radiation axis than the first light guide portion guides light incident from the second incident portion forward. A cylindrical second radiation portion radiates the light from the second light guide portion forward.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: November 5, 2013
    Assignee: Koito Manufacturing Co., Ltd.
    Inventor: Yuuji Ishihara
  • VEHICULAR LAMP
    Publication number: 20110292671
    Abstract: In a vehicular lamp, a first zone includes a first incident portion disposed on a radiation axis. A first light guide portion guides light incident from the first incident portion forward. A first radiation portion formed from a first concave surface and a second concave surface deflects the light from the first light guide portion toward a lamp optical axis side and radiates such light forward in a diffused manner. A second zone includes a cylindrical second incident portion disposed on an outer side of the first incident portion. A second light guide portion that is longer in the direction of the radiation axis than the first light guide portion guides light incident from the second incident portion forward. A cylindrical second radiation portion radiates the light from the second light guide portion forward.
    Type: Application
    Filed: May 19, 2011
    Publication date: December 1, 2011
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventor: Yuuji Ishihara