Patents by Inventor Jyun Yoshihara

Jyun Yoshihara 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 producing 2,6-dimethylnaphthalene
    Patent number: 5068480
    Abstract: A process for producing 2,6-dimethylnaphthalene, which comprises subjecting 2-methyl-1-(p-tolyl)-butene, 2-methyl-1-(p-tolyl)-butane or a mixture of these to cyclization and dehydrogenation in the presence of a catalyst comprising lead oxide and/or indium oxide and aluminum oxide.
    Type: Grant
    Filed: December 3, 1990
    Date of Patent: November 26, 1991
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Makoto Takagawa, Ken Yamagishi, Jyun Yoshihara, Kenji Inamasa, Kumiko Watabe