Patents by Inventor Shiroh Inui

Shiroh Inui 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).

  • Process for preparing alph-methylstyrene unsaturated dimer
    Patent number: 5481053
    Abstract: A process for preparing unsaturated dimers of .alpha.-methylstyrene comprising dimerizing .alpha.-methylstyrene using activated clay or acid clay as a catalyst, in which the dimerization is carried out in the presence of a carbonic acid ester, preferably ethylene carbonate, which process achieves high selectivity to unsaturated dimers with ease in controlling the reaction temperature.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: January 2, 1996
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Masashi Inaba, Shiroh Inui, Hideki Kurokawa, Fujio Mizutani
  • Optically active compound
    Patent number: 5118442
    Abstract: An optically active compound represented by formula (I): ##STR1## wherein R.sup.1 represents an alkyl group having from 6 to 18 carbon atoms or an alkoxy group having from 6 to 18 carbon atoms; A represents ##STR2## or ##STR3## wherein ring ##STR4## represents a nitrogen-containing hetero-aromatic ring; n and m each represents 0 or 1; R.sup.2 represents an alkyl group having from 1 to 12 carbon atoms; and C* is an asymmetric carbon atom. The compound of formula (I) exhibits excellent physicochemical stability, a low temperature range for the chiral smectic C phase when used either alone or in combination with other compounds, and a rapid response.
    Type: Grant
    Filed: June 21, 1990
    Date of Patent: June 2, 1992
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Masaki Saito, Makoto Takeda, Noriko Wada, Shiroh Inui, Hiroshi Taniguchi, Kazuaki Isomura, Nobuyoshi Maruyama, Shoichi Seo, Hiroshi Iwane, Shin Kawano