Patents by Inventor Tomoko Yaguchi

Tomoko Yaguchi 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).

  • Fluorine-containing liquid crystal compound, liquid crystal composition, and liquid crystal electro-optic element
    Patent number: 8574455
    Abstract: A liquid crystal compound, a liquid crystal composition, and a liquid crystal electric optical device having a low rotational viscosity (?1) and appropriate elastic constants. A fluorine-containing liquid crystal compound represented by formula (1). R1-(A1-Z1)a-(A2-Z2)b-(A3-Z3)c-A4-(CH2)n-CF?CF—R2 (1), R1 is a hydrogen atom, a halogen atom, or an alkyl group, R2 is a halogen atom or an alkyl group that may be halogen-substituted or which may include a (thio)ether group, A1 to A4 may be a phenylene group or a cyclohexylene group that may be halogen-substituted or which may include a (thio)ether group, Z1 to Z3 are a single bond, —O—, —S—, or a divalent aliphatic hydrocarbon group that may be halogen-substituted or which may include a (thio)ether group. n is an integer from 0 to 3, and a, b, and c are 0 or 1, provided that a+b+c is 1 or greater.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: November 5, 2013
    Assignee: AGC Seimi Chemical Co., Ltd.
    Inventors: Tomoko Yaguchi, Tomoyuki Asai, Hidemasa Koh
  • FLUORINE-CONTAINING LIQUID CRYSTAL COMPOUND, LIQUID CRYSTAL COMPOSITION, AND LIQUID CRYSTAL ELECTRO-OPTIC ELEMENT
    Publication number: 20110268894
    Abstract: A liquid crystal compound, a liquid crystal composition, and a liquid crystal electric optical device having a low rotational viscosity (?1) and appropriate elastic constants. A fluorine-containing liquid crystal compound represented by formula (1). R1-(A1-Z1)a-(A2-Z2)b-(A3-Z3)c-A4-(CH2)n-CF?CF—R2 (1), R1 is a hydrogen atom, a halogen atom, or an alkyl group, R2 is a halogen atom or an alkyl group that may be halogen-substituted or which may include a (thio)ether group, A1 to A4 may be a phenylene group or a cyclohexylene group that may be halogen-substituted or which may include a (thio)ether group, Z1 to Z3 are a single bond, —O—, —S—, or a divalent aliphatic hydrocarbon group that may be halogen-substituted or which may include a (thio)ether group. n is an integer from 0 to 3, and a, b, and c are 0 or 1, provided that a+b+c is 1 or greater.
    Type: Application
    Filed: December 22, 2009
    Publication date: November 3, 2011
    Applicant: AGC Seimi Chemical Co., Ltd.
    Inventors: Tomoko Yaguchi, Tomoyuki Asai, Hidemasa Koh