Patents by Inventor Masaharu Seki

Masaharu Seki 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).

  • Ferroelectric liquid crystal composition
    Patent number: 5106531
    Abstract: The present invention provides a ferroelectric liquid crystal composition which can exhibit an S.sub.C * phase in an extensive temperature range inclusive of room temperature and which has quick response properties and a large tilt angle, and it also provides a switching element containing the above-mentioned ferroelectric liquid crystal composition and having excellent response properties.The present invention is connected with a ferroelectric liquid crystal composition comprising at least one component A and at least one component B described hereinafter, the content of said component A being from 30 to 95% by weight, the content of said component B being from 5 to 50% by weight,said component A being a compound represented by the formula (I) ##STR1## wherein R.sup.1 is an alkoxy group having 3 to 14 carbon atoms, k is an integer of 1 and R.sup.2 is an optically active group,said component B being a ferroelectric liquid crystal compound having a spontaneous polarization of 10 nCcm.sup.-2 or more.
    Type: Grant
    Filed: February 7, 1990
    Date of Patent: April 21, 1992
    Assignee: Chisso Corporation
    Inventors: Katsuyuki Murashiro, Makoto Kikuchi, Mitsuyoshi Ichihashi, Kanetsugu Terashima, Masaharu Seki