Patents by Inventor Hayato Kamikubo

Hayato Kamikubo 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).

  • ZnO:Zn phosphor for vacuum fluorescent display
    Patent number: 5128063
    Abstract: A phosphor for a vacuum fluorescent display composed of a ZnO:Zn phosphor material mixed with tungsten oxide powder and Zn microfine powder, each of which is in the range of 0.01 weight % to 3 weight %.
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: July 7, 1992
    Assignee: NEC Corporation
    Inventor: Hayato Kamikubo