Patents by Inventor Kohki Sago

Kohki Sago 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).

  • Optically isotropic liquid crystal medium, and optical device
    Patent number: 8475887
    Abstract: A liquid crystal medium having a wide temperature range of a liquid crystal phase, a large optical anisotropy, and a large dielectric anisotropy and having an optically isotropic liquid crystal phase is provided. The liquid crystal medium is characterized by containing a liquid crystal compound having a pyrimidine ring and a linking group —CF2O— and a chiral dopant, and exhibiting an optically isotropic liquid crystal phase.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: July 2, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yasuhiro Haseba, Kohki Sago, Takafumi Kuninobu
  • OPTICALLY ISOTROPIC LIQUID CRYSTALLINE MEDIUM, AND OPTICAL ELEMENT
    Publication number: 20110069245
    Abstract: A liquid crystal medium having a wide temperature range of a liquid crystal phase, a large optical anisotropy, and a large dielectric anisotropy and having an optically isotropic liquid crystal phase is provided. The liquid crystal medium is characterized by containing a liquid crystal compound having a pyrimidine ring and a linking group —CF2O— and a chiral dopant, and exhibiting an optically isotropic liquid crystal phase.
    Type: Application
    Filed: May 8, 2009
    Publication date: March 24, 2011
    Applicant: CHISSO PETROCHEMICAL CORPORATION
    Inventors: Yasuhiro Haseba, Kohki Sago, Takafumi Kuninobu