Patents by Inventor Nobuo Onoda

Nobuo Onoda 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 of manufacturing methanesulfonyl chloride
    Patent number: 4997535
    Abstract: This invention is concerned with the manufacture of methanesulfonyl chloride from a mixture of methane, sulfur dioxide gas and chloride gas under irradiation of light having a wave length of 200.about.600 nm from a low vapor pressure mercury lamp, a high vapor pressure mercury lamp, a luminescent lamp a xenon lamp and/or sun light. High purity methanesulfonyl chloride is manufactured simply by single distillation, without using methylmercaptan which has a bad odor as raw material. The invention has special merit in utilizing sulfur dioxide gas which is produced in a large amount in the desulphurization of petroleum.
    Type: Grant
    Filed: August 25, 1989
    Date of Patent: March 5, 1991
    Assignee: Toyo Kasei Kogyo Company Limited
    Inventors: Hideki Tatsumi, Nobuo Onoda, Atsuhiro Onishi