Patents by Inventor Kaoru Koto

Kaoru Koto 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).

  • Colorless liquid crystalline compounds
    Patent number: 4694098
    Abstract: A colorless liquid crystalline compound having at least one 6-membered ring and non-cyclic end groups in the molecular skeleton, said 6-membered ring containing two or more carbon atoms, at least one of which is directly bonded to a methylene group of a non-cyclic group having an alkoxy group at another end has a wide mesomorphic range. When said colorless liquid crystalline compound is mixed with a liquid crystal composition, the resulting mixture also has an enlarged mesomorphic range and in almost all cases has a reduced viscosity.
    Type: Grant
    Filed: August 2, 1985
    Date of Patent: September 15, 1987
    Assignees: Hitachi, Ltd., Kanto Chemical Co., Ltd.
    Inventors: Yoichi Hirai, Tsunenori Fujii, Kaoru Koto, Kenji Suzuki, Masahiro Yoshida, Hisashi Okawa, Yoshiaki Okabe, Teruo Kitamura, Hisao Yokokura, Shintaroo Hattori, Akio Mukoh, Mikio Sato
  • Liquid crystal compound and liquid crystal composition
    Patent number: 4584120
    Abstract: The liquid crystal compound of this invention is characterized by having the general formula.
    Type: Grant
    Filed: May 15, 1984
    Date of Patent: April 22, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Tsunenori Fujii, Kenji Suzuki, Masahiro Yoshida, Hisashi Okawa, Kaoru Koto, Hideki Ohmori, Hisao Yokokura, Yoshiaki Okabe, Shintaroo Hattori, Teruo Kitamura, Akio Mukoh, Mikio Sato
  • Colorless liquid crystalline compounds
    Patent number: 4564694
    Abstract: A colorless liquid crystalline compound having at least one 6-membered ring and non-cyclic end groups in the molecular skelton, said 6-membered containing two or more carbon atoms, at least one of which is directly bonded to a methylene group of a non-cyclic group having an alkoxy group at another end has a wide mesomorphic range. When said colorless liquid crystalline compound is mixed with a liquid crystal composition, the resulting mixture also has an enlarge mesomorphic range and in almost all cases has a reduced viscosity.
    Type: Grant
    Filed: February 24, 1982
    Date of Patent: January 14, 1986
    Assignees: Hitachi, Ltd., Kanto Chemical Co., Inc.
    Inventors: Yoichi Hirai, Tsunenori Fujii, Kaoru Koto, Kenji Suzuki, Masahiro Yoshida, Hisashi Okawa, Yoshiaki Okabe, Teruo Kitamura, Hisao Yokokura, Shintaroo Hattori, Akio Mukoh, Mikio Sato