Patents by Inventor Hideharu Hamada

Hideharu Hamada 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).

  • LED head
    Patent number: 5506612
    Abstract: In an LED head, a photosensitive drum is positioned with reference to an upper surface of a circuit board on which surface at least one light-emitting element is supported in order to accurately set the distance between the light-emitting element and a photosensitive drum. Further, clips and a spring are used to accurately set the distance between the light-emitting element and a lens and to simplify the process of production.
    Type: Grant
    Filed: August 13, 1992
    Date of Patent: April 9, 1996
    Assignee: Rohm Co., Ltd.
    Inventors: Hiromi Ogata, Hideharu Hamada, Manabu Yokoyama, Masaya Imamura
  • LED head having heat radiating mount
    Patent number: 5291039
    Abstract: An LED head includes a circuit substrate on which a light emitting element and drive IC are mounted, a SELFOC lens for condensing the irradiating light from the light emitting element on the circuit substrate, and a head cover of aluminum for holding the SELFOC lens spaced a given distance away from the light emitting element and for radiating heat from the circuit substrate.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: March 1, 1994
    Assignee: Rohm Co., Ltd.
    Inventors: Hiromi Ogata, Seiji Koshikawa, Hideharu Hamada