Patents by Inventor Kunihiro Yamamura

Kunihiro Yamamura 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).

  • Producing method of alcohols such as cyclohexanedimethanol
    Patent number: 6600080
    Abstract: In a producing method of alcohols such as cyclohexanedimethanol, a benzyl ester is obtained, for example, by the reaction between a benzyl compound and carboxylic acid in the presence of oxygen and a catalyst including palladium, gold ultra fine particles, and at least one kind of element selected from the group consisting of Group IIA, IIIA, VIA, IIB, VB, and VIII of the periodic table, and alkali metal. The alcohols are produced by hydrogenating a benzene ring of the benzyl ester and then hydrolyzing the resultant esters. Alternatively, the benzyl ester is hydrolyzed to produce benzyl alcohols, and a benzene ring of the benzyl alcohols is hydrogenated to produce the alcohols.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: July 29, 2003
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Yusei Nagamura, Yuuichi Satoh, Jun Tatsumi, Kunihiro Yamamura