Patents by Inventor Mitsuyoshi Manabe

Mitsuyoshi Manabe 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 production of methacrylic acid
    Patent number: 4954650
    Abstract: This invention relates to a improved method for the production of methacrylic acid by the steps of subjecting isobutylene and/or tertiory hutanol to catalytic vapor-phase oxidation with molecular oxygen in a first reactor, then supplying the resultant gax mixture to a second reactor, a rodlike or plate like insert set being placed in the empty space of gas inlet part of the tube of said second reactor.
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: September 4, 1990
    Assignees: Sumitomo Chemical Company, Ltd., Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Tadashi Abe, Mitsuyoshi Manabe, Koji Deguchi, Hiroyuki Uhara, Yukio Aoki