Patents by Inventor Tsunenori Fujii

Tsunenori Fujii 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).

  • Cyclobutanecarboxylic acid derivatives and liquid crystalline compositions containing them
    Patent number: 5545747
    Abstract: An optically inactive cyclobutanecarboxylic acid derivative of the general formula ##STR1## wherein R.sup.1 is a hydrogen atom or a straight or branched chain alkyl group having 1-14 carbon atoms, R.sup.2 is a straight or branched chain alkyl group having 1-14 carbon atoms, X.sup.1 and X.sup.2 independently represent hydrogen or fluorine atoms, as well as a liquid crystalline composition containing at least one such derivative.
    Type: Grant
    Filed: August 1, 1994
    Date of Patent: August 13, 1996
    Assignee: Kanto Kagaku Kabushiki Kaisha
    Inventors: Megumi Kawaguchi, Hiromi Inoue, Atsushi Sugiura, Kenji Suzuki, Tsunenori Fujii
  • P-terphenyl derivatives and liquid crystalline compositions
    Patent number: 5494605
    Abstract: The p-terphenyl derivatives of the formula shown below are useful in preparing practical ferroelectric liquid crystalline compositions. The derivatives exhibit excellent chemical stability and display the chiral smectic C or smectic C phase over a wide temperature range. ##STR1## wherein each of R.sub.1 and R.sub.2 is a straight or branched chain alkyl group having 1-18 carbon atoms; each of Y and Z is a single bond, O, COO or OCO; and any two of X.sub.1, X.sub.2, and X.sub.3 are fluorine atoms and the remainder is a hydrogen atom.
    Type: Grant
    Filed: November 24, 1993
    Date of Patent: February 27, 1996
    Assignee: Kanto Kagaku Kabushiki Kaisha
    Inventors: Makoto Kurihara, Hiromi Inoue, Atsushi Sugiura, Kenji Suzuki, Tsunenori Fujii
  • Biphenyl compound
    Patent number: 5397504
    Abstract: A new biphenyl compound which is chemically stable and possesses practically excellent properties as a component for preparing ferroelectric smetic liquid crystalline compositions as well as a new liquid crystalline composition containing this compound.
    Type: Grant
    Filed: January 10, 1994
    Date of Patent: March 14, 1995
    Assignee: Kanto Kagaku Kabushiki Kaisha
    Inventors: Kazuhiko Tsuchiya, Kenji Suzuki, Atsushi Sugiura, Tsunenori Fujii
  • P-terphenyl derivatives and liquid crystalline compositions
    Patent number: 5382380
    Abstract: New p-terphenyl derivatives useful as components for preparing practical ferroelectric liquid crystalline compositions and excellent in chemical stability, as well as liquid crystalline compositions containing at least one of the p-terphenyl derivatives.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: January 17, 1995
    Assignee: Kanto Kagaku Kabushiki Kaisha
    Inventors: Makoto Kurihara, Hiromi Inoue, Atsushi Sugiura, Kenji Suzuki, Tsunenori Fujii
  • Liquid crystal composition and liquid crystal device containing the same
    Patent number: 5271867
    Abstract: A ferroelectric liquid crystal composition comprising a specific fluorophenyl compound (I) and a specific pyrimidine compound (II) and optionally a specific benzoate compound (III), which exhibits a high-speed response in room temperature and is useful for liquid crystal display devices of large capacity.
    Type: Grant
    Filed: January 27, 1992
    Date of Patent: December 21, 1993
    Assignees: Sharp Kabushiki Kaisha, Kanto Kagaku Kabushiki Kaisha Corporation
    Inventors: Mitsuhiro Koden, Tomoaki Kuratate, Makoto Shiomi, Fumiaki Funada, Hiromi Inoue, Kazuhiko Tsuchiya, Atsushi Sugiura, Tsunenori Fujii
  • 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