Patents by Inventor Yasumasa Tashiro

Yasumasa Tashiro 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).

  • Mesomorphic compound, liquid crystal composition containing same, liquid crystal device using same and display apparatus
    Patent number: 5217644
    Abstract: A mesomorphic compound represented by the following formula (I): ##STR1## wherein R.sup.1 denotes analkyl group having 1-18 carbon atoms; R.sup.2 denotes an alkyl group having 1-12 carbon atoms; A and B respectively denote ##STR2## Z.sup.1 and Z.sup.2 respectively denote --H, 'CH.sub.3, --OCH.sub.3, --CN or halogen; m and n respectively denote 0, 1 or 2 and p denotes 1 or 2 with proviso that m+n+p =2 or 3; X denotes a single bond, ##STR3## denotes an asymmetric carbon atom.
    Type: Grant
    Filed: January 29, 1991
    Date of Patent: June 8, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Nohira, Yoko Yamada, Shinichi Nakamura, Akira Sakaigawa, Yasumasa Tashiro, Yoshio Aoki