Patents by Inventor Yuvraj Negi

Yuvraj 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: 5328641
    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 haloalkyl group, X is --O--, --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: October 13, 1992
    Date of Patent: July 12, 1994
    Assignee: Showa Shell Sekiyu Kabushiki Kaisha
    Inventors: Yoshihiko Aihara, Tadaaki Isozaki, Hioyuki Mogamiya, Yuvraj Negi, Toru Ooide