Patents by Inventor Petra Kloess

Petra Kloess 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 material and liquid crystal display device using the same
    Patent number: 5942155
    Abstract: The present invention is a liquid crystal including a ferroelectric liquid crystal compound and a siloxane compound represented by the following general formula (I). ##STR1## (where m is an integer of 0 to 20, n is an integer of 0 to 8, p is 0 or 1, q is an integer of 0 to 2, R is an alkyl group such as methyl group, ethyl group or propyl group, or an organic residue group represented by the following general formula (II) ##STR2## where R* is an alkyl group having optical activity center and X is halogen).
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: August 24, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Harry Coles, Kohki Takatoh, Petra Kloess, Marcus J. Coles