Patents by Inventor Yoshinobu Toriyahara

Yoshinobu Toriyahara 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).

  • Method of producing carbonic acid diester
    Patent number: 5292916
    Abstract: A carbonic acid diester is stably and safely produced at a high selectivity and at a high yield by catalytically reacting carbon monoxide with a nitrous acid ester in a gas phase in the presence of a solid catalyst comprising a catalytic solid material carried on a solid carrier and comprising:(a) a platinum group metal and/or a compound thereof,(b) a compound of Fe, Cu, Bi, Co, Ni and/or Sn, and(c) a vanadium compound, molybdenum compound, tungsten compound, sulfuric acid and/or phosphoric acid.
    Type: Grant
    Filed: May 22, 1992
    Date of Patent: March 8, 1994
    Assignee: Ube Industries, Ltd.
    Inventors: Tokuo Matsuzaki, Tuneo Shimamura, Satoru Fujitsu, Yoshinobu Toriyahara