Patents by Inventor Ryozi Sato

Ryozi Sato 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).

  • Extractive distillation of a methacrolein effluent
    Patent number: 3957880
    Abstract: Methacrolein is recovered from a crude gaseous mixture in a process comprising the steps of first absorbing the methacrolein from the mixture with a selective solvent to form a liquid mixture and thereafter subjecting the thus formed liquid mixture to an extractive distillation with water.
    Type: Grant
    Filed: January 3, 1974
    Date of Patent: May 18, 1976
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Ryozi Sato, Takanori Musha, Yoshio Ito