Patents by Inventor Yuji Sawamoto

Yuji Sawamoto 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).

  • Production of tertiary amine
    Patent number: 4625063
    Abstract: A tertiary amine of a high purity is prepared from an alcohol or an aldehyde and a primary or second amine at a low temperature, using a catalyst of copper, nickel and an element belonging to the VIII platinum group such as platinum, palladium, ruthenium and rhodium, while removing out water formed by the reaction.
    Type: Grant
    Filed: June 6, 1985
    Date of Patent: November 25, 1986
    Assignee: Kao Corporation
    Inventors: Yukinaga Yokota, Yuji Sawamoto, Hideki Taniguchi, Kazuhiko Okabe