Patents by Inventor Yoichi Kyuko

Yoichi Kyuko 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 production of dimethylnaphthalene
    Patent number: 5396007
    Abstract: A process for producing dimethylnaphthalene by the dehydrogenation of dimethyl-tetrahydronaphthalene which comprises carrying out the dehydrogenation reaction in a gaseous state at a temperature of 200.degree. to 350.degree. C. in the presence of a diluting medium and by the use of a platinum and/or palladium catalyst supported on an activated carbon carrier. The process is capable of producing industrially useful dimethylnaphthalene with a high yield and a high selectivity and minimized side reactions, over a long stabilized period.
    Type: Grant
    Filed: July 1, 1993
    Date of Patent: March 7, 1995
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Yoichi Kyuko, Shinji Ozawa, Makoto Takagawa, Kenji Inamasa