Patents by Inventor Kunikazu Yoneyama

Kunikazu Yoneyama 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 preparing tertiary amines
    Patent number: 4448996
    Abstract: Tertiary amines are prepared by reacting a long-chain olefin with carbon monoxide, hydrogen, and a primary or secondary amine in the presence of a catalyst composed of a rhodium- and/or ruthenium-containing compound using a specific solvent, followed by phase separation of the reaction product. This process facilitates recovery and re-use of the expensive catalysts.
    Type: Grant
    Filed: December 15, 1982
    Date of Patent: May 15, 1984
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Yoshio Yanagi, Kunikazu Yoneyama, Hiroyuki Omori