Patents by Inventor Yoshinari Sakikubo

Yoshinari Sakikubo 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).

  • Dichoric dye for color liquid crystals having halogen substituted in perylene structure
    Patent number: 4780531
    Abstract: A dichroic dye for coloring liquid crystal compositions are disclosed which is represented by the following general formula: ##STR1## in which Dye 1 and Dye 2 each represents a group of atoms necessary to form a linear dye structure containing an azo, azomethine or ester group; X represents a halogen atom; and n represents an integer of from 1 to 10. The dye is suited for use in color liquid crystal display devices, e.g., of guest-host type.
    Type: Grant
    Filed: November 20, 1986
    Date of Patent: October 25, 1988
    Assignee: Alps Electric Co., Ltd.
    Inventors: Mitsuru Kano, Yoshinori Kato, Yoshimi Kamijo, Yoshinari Sakikubo, Yoshio Takeda, Takanori Sato
  • Dichromatic coloring matter for a colored liquid crystal display element
    Patent number: 4607097
    Abstract: A dichromatic coloring matter for a colored liquid crystal display element comprising a compound of the general formula: ##STR1## where A and B each stand for ##STR2## where n is 0, 1, 2, 3 or 4, and X and Y each stand for ##STR3## where R.sub.1 and R.sub.2 stand for an alkyl group or hydrogen, --R (alkyl group) or --OR (alkoxy group).
    Type: Grant
    Filed: June 4, 1984
    Date of Patent: August 19, 1986
    Assignees: Alps Electric Co., Ltd., Sanyo Color Works Ltd.
    Inventors: Mitsuru Kano, Yoshinori Kato, Yoshimi Kamijo, Yoshio Takeda, Yoshinari Sakikubo, Naoki Yagi