Patents by Inventor Yasukazu Morito

Yasukazu Morito 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).

  • Projection type color picture display system having green picture and blue picture producing CRTs with .gamma. coefficients
    Patent number: 4845403
    Abstract: In a projection type color picture display system having red, green and blue picture producing cathode-ray tubes in which the green picture producing cathode-ray tube is capable of emitting green light defined as x.ltorsim.0.330 and y.gtorsim.0.570 in the CIE chromaticity diagram, use is made of a ZnS: Ag, Al phosphor material for forming the phosphor screen of the blue picture producing cathode-ray tube. The projection type display system thus obtained is capable of displaying color pictures with a high color purity and a high saturation.
    Type: Grant
    Filed: March 19, 1987
    Date of Patent: July 4, 1989
    Assignees: Hitachi, Ltd., Kasei Optonix Ltd.
    Inventors: Yasukazu Morito, Yasuhiko Uehara, Hidetsugu Matsukiya, Hajime Yamamoto, Shuji Inaho, Takashi Hase, Shinji Yokota