Patents by Inventor Kiyobmi Takahashi

Kiyobmi Takahashi 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 producing n-methylolacrylamide
    Patent number: 5220065
    Abstract: A method for producing N-methylolacrylamide which comprises reacting acrylamide with formaldehyde or paraformaldehyde in an aqueous solvent in the presence of (A) a basic compound and at least one member selected from the group consisting of a salt of Mo-containing acid and a salt of W-containing acid, or (B) a quaternary ammonium hydroxide compound, is provided by the present invention. According to the method of the present invention, N-methylolacrylamide having few by-products is obtained in high yields.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: June 15, 1993
    Assignee: Nitto Chemical Industry Co., Ltd.
    Inventors: Yasuyuki Takayanagi, Kiyobmi Takahashi, Tomio Nakamura