Patents by Inventor Tsutomu Mikajiri

Tsutomu Mikajiri 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).

  • Liquid crystal compositions and liquid crystal display devices
    Patent number: 5985170
    Abstract: A liquid crystal composition for a liquid crystal display device of supertwisted nematic mode characterized in that it comprises at least one compound selected from the group consisting of condensed heterocyclic compounds, aromatic amine compounds, aliphatic amine compounds and aromatic hydroxy compounds. Liquid crystal display devices having high quality such that no irregular display caused by dust and fusion phenomena are observed can be provided by using the liquid crystal compositions by controlling to scarcely lower the specific resistance value and to lower the voltage-holding ratio.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: November 16, 1999
    Assignee: Chisso Corporation
    Inventors: Shinichi Inaba, Tsutomu Mikajiri
  • Liquid crystal compositions and liquid crystal display devices
    Patent number: 5723065
    Abstract: A liquid crystal composition for a liquid crystal display device of supertwisted nematic mode characterized in that it comprises at least one compound selected from the group consisting of condensed heterocyclic compounds, aromatic amine compounds, aliphatic amine compounds and aromatic hydroxy compounds. Liquid crystal display devices having high quality such that no irregular display caused by dust and fusion phenomena are observed can be provided by using the liquid crystal compositions by controlling to scarcely lower the specific resistance value and to lower the voltage-holding ratio.
    Type: Grant
    Filed: January 7, 1994
    Date of Patent: March 3, 1998
    Assignee: Chisso Corporation
    Inventors: Shinichi Inaba, Tsutomu Mikajiri