Patents by Inventor Kenjii Furukawa

Kenjii Furukawa 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: 5198150
    Abstract: A ferroelectric liquid crystal composition is provided which includes at least one achiral compound represented by formula (I) ##STR1## wherein each of R.sup.1 and R.sup.2 is an alkyl group having 1 to 18 carbon atoms, at least one optically active compound represented by formula (II) ##STR2## wherein R.sup.3 is an alkyl group or an alkoxy group having 1 to 18 carbon atoms, R.sup.4 is an alkyl group having 2 to 18 carbon atoms, X is a single bond, --COO--, --OCO--, --N.dbd.CH--, --CH.dbd.N--, --OCH.sub.2 -- or --CH.sub.2 O--, each of m and n is an integer of 1 or 2, and the symbol * is an asymmetric carbon atom, and at least one compound represented by formula (III) ##STR3## wherein each of ##STR4## R.sup.5 is an alkyl group or an alkoxy group having 1 to 18 carbon atoms, Y is a single bond, --CH.sub.2 O-- or --OCH.sub.2 --, p is an integer of 0 or 1, and Z is an alkyl group having 1 to 18 carbon atoms or --C*H(CH.sub.3)--O--R.sup.6, wherein R.sup.
    Type: Grant
    Filed: August 16, 1989
    Date of Patent: March 30, 1993
    Assignee: Chisso Corporation
    Inventors: Fusayuki Takeshita, Makoto Kikuchi, Mitsuyoshi Ichihashi, Kanetsugu Terashima, Kenjii Furukawa