Patents by Inventor Yukiya Nakasato

Yukiya Nakasato 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).

  • Pressure sensitive copying paper
    Patent number: 4461495
    Abstract: A condensate free from stickiness and exhibiting an excellent initial color-formability when used as color developer of pressure sensitive copying paper can be obtained by reacting p-hydroxybenzoic acid and one p-alkyl-substituted phenol or a mixture of two or more p-alkyl-substituted phenols with formaldehyde in the presence of an acid catalyst and then directly taking out the condensate into cold water without any procedure such as dehydration, concentration, etc.
    Type: Grant
    Filed: July 8, 1982
    Date of Patent: July 24, 1984
    Assignees: Mitsubishi Paper Mills, Ltd., Mitsubishi Gas Chemcail, Co., Inc.
    Inventors: Yukiya Nakasato, Atsuo Kuramoto, Sadao Morishita, Shigetoshi Hiraishi