Patents by Inventor Gen Maekawa

Gen Maekawa 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: 6382822
    Abstract: A vehicular lamp having an inner lens is described. In an implementation, an annular wall 18A surrounding an optic axis Ax of a reflector 14 is formed on the inner lens 18 disposed between am outer lens 16 and a reflecting surface 14a of the reflector 14. The inner lens 18 is divided by the annular wall 18A into an internal zone 18B and an external zone 18C which may be different from each other in convex-concave lens shape. The internal zone 18B may be formed of a translucent lens, and a plurality of grid-type lens elements 18Cs may be formed over the entire rear surface of the external zone 18C. Thus, an observer viewing the interior of a lighting chamber from a location in front of the lamp will see that the internal zone 18B and the external zone 18C, which are divided by the annular wall 18A, are significantly different. The configuration of elements provides a vehicular lamp that is visually attractive.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: May 7, 2002
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Gen Maekawa, Nobutaka Tezuka
  • Patent number: 6012831
    Abstract: A vehicle lamp includes a lens attached to a lamp body, the lens including a curved portion, a circumferential wall-like attachment rib projecting from an inner surface of the curved portion of the lens and having an even projection height, and a sealing plate having a circumferential edge portion and a cover portion on an inner side of the circumferential edge portion for ultrasonically welding a welding portion formed in the circumferential edge portion to the attachment rib, and a reflection portion including a plurality of recursive reflection elements formed in a space defined by the lens, the attachment rib and the sealing plate, wherein a pressed portion extends from the circumferential edge portion in a direction opposite to the lens, the pressed portion being adapted to be pressed against a vibrating portion of an ultrasonic welding apparatus and formed in the sealing plate so that a forward end surface of the pressed portion is located in the same plane.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: January 11, 2000
    Assignee: Koito Manufacturing Co., Ltd.
    Inventor: Gen Maekawa