Patents by Inventor Takenaka Masaaki

Takenaka Masaaki 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 the production of acrylamide
    Patent number: 4365091
    Abstract: A method for the production of acrylamide by a catalytic hydration of acrylonitrile characterized by using a compound oxide catalyst which is prepared by a precipitation process and represented by the formula,Ti.sub.a X.sub.b Y.sub.c O.sub.dwherein Ti is titanium, X is one of zinc, cadmium and copper, Y is either nickel or lanthanum and the atomic ratios a, b and c are 15 to 98, 2 to 85 and 0 to 20, respectively and d is the number of oxygen atoms satisfying the valence of the other elements.
    Type: Grant
    Filed: November 2, 1981
    Date of Patent: December 21, 1982
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Takenaka Masaaki, Tsutomu Takahashi, Tatuya Momobayashi