Patents by Inventor Yoshio Orito

Yoshio Orito 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 for partial nuclear hydrogenation of aromatic hydrocarbon compounds and a hydrogenation catalyst therefor
    Patent number: 4495373
    Abstract: The invention provides an improvement in the partial nuclear hydrogenation of an aromatic hydrocarbon compound in the liquid phase with admixture of water catalyzed by a ruthenium-containing solid catalyst. The scope of the invention is in the use of a novel ruthenium-containing catalyst supported on a silica gel and the like carrier and the catalyst is prepared by the hydrolysis and gelation of an alkoxide of silicon or aluminum in a solution containing a ruthenium compound, e.g. ruthenium alkoxide, followed by drying of the gelled material so that the resultant catalyst is very uniformly impregnated with the ruthenium ingredient to be imparted with greatly improved catalytis activity and selectivity for the intended reaction over conventional ruthenium-containing catalysts prepared by post-impregnation of a preformed silica gel carrier.
    Type: Grant
    Filed: February 22, 1984
    Date of Patent: January 22, 1985
    Assignee: Director-General of the Agency of Industrial Science and Technology
    Inventors: Shuichi Niwa, Juichi Imamura, Fujio Mizukami, Kazuo Shimizu, Yoshio Orito
  • Method for the asymmetric hydrogenation of .alpha.-ketoesters
    Patent number: 4329487
    Abstract: A method for the asymmetric hydrogenation of .alpha.-ketoesters which comprises subjecting an .alpha.-ketoester containing an .alpha.-ketoester grouping of the formula: --CO--COO-- to assymmetric hydrogenation in the presence of a platinum-alumina catalyst modified with a solution of a cinchona-alkaloid.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: May 11, 1982
    Assignee: Director-General of Agency of Industrial Science and Technology
    Inventors: Yoshio Orito, Sumi Imai, Shuichi Niwa
  • Dehydrogenation of cyclohexanes
    Patent number: 4271327
    Abstract: A catalyst having a noble metal of Group 8 of the Periodic Table of Elements carried on aluminum sponge and a method for the dehydrogenation of cyclohexanes which comprises bringing cyclohexanes, in a heated state, into contact with the catalyst described above in conjunction with hydrogen.
    Type: Grant
    Filed: March 5, 1980
    Date of Patent: June 2, 1981
    Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Toshio Ishikawa, Shuichi Niwa, Shoko Yamadaya, Yoshio Orito
  • Noble metal catalyst for dehydrogenation of cyclohexanes
    Patent number: 4221678
    Abstract: A catalyst having a noble metal of Group 8 of the Periodic Table of Elements carried on aluminum sponge and a method for the dehydrogenation of cyclohexanes which comprises bringing cyclohexanes, in a heated state, into contact with the catalyst described above in conjunction with hydrogen.
    Type: Grant
    Filed: March 13, 1979
    Date of Patent: September 9, 1980
    Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Toshio Ishikawa, Shuichi Niwa, Shoko Yamadaya, Yoshio Orito