Patents by Inventor Yuvra Negi

Yuvra Negi 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).

  • Liquid crystal compound
    Patent number: 5207947
    Abstract: Liquid crystal compound of the formula ##STR1## wherein R.sub.1 and R.sub.2 each is a C.sub.1-18 alkyl group or an aralkyl group, R' is a haloalkyl group, X is --0--, --CO--, --COO-- or direct bond, Y is --COO--, --OCO-- or --CH.sub.2 O--, (A) and (B) each is ##STR2## and p and l each is zero or one.
    Type: Grant
    Filed: June 11, 1991
    Date of Patent: May 4, 1993
    Assignee: Showa Shell Sekiyu Kabushiki Kaisha
    Inventors: Yoshiichi Suzuki, Noriko Yamakawa, Yoshihiko Aihara, Hiroyuki Mogamiya, Toru Ooide, Tadaaki Isozaki, Yuvra Negi, Shigenori Sakuma