Patents by Inventor Hiroyoshi Iwashima

Hiroyoshi Iwashima 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 device for emitting light without substantially delaying the latency of P300 wave in human event related potential
    Patent number: 5449978
    Abstract: Disclosed is a lighting device to emit a light which substantially does not delay the latency of P300 wave in human ERP. Such a light hardly reduces human recognition and judgement when used in illumination. This renders the lighting device very useful in various illuminations directed to improve the efficiency and accuracy in visual tasks.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: September 12, 1995
    Assignee: Ken Hayashibara
    Inventors: Osami Matsuda, Naoto Ogimoto, Hiroyoshi Iwashima
  • Lighting device
    Patent number: 5436534
    Abstract: Disclosed is a lighting device to emit a light which substantially does not elevate the ACTH level in human blood. Such a light hardly causes stresses when used in illumination. This renders the lighting device very useful in comfortable illuminated spaces for visual tasks.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: July 25, 1995
    Assignee: Ken Hayashibara
    Inventors: Osamu Matsuda, Naoto Ogimoto, Hiroyoshi Iwashima