Patents by Inventor Tadami Ueno

Tadami Ueno 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).

  • Aqueous coating resin compositions and process for producing same
    Patent number: 4897434
    Abstract: An aqueous coating resin composition, the improvement wherein a microgel composed of a resin reaction product having a three-dimensional network structure, which is obtained by the esterification reaction of (1) 40 to 90 parts by weight of an aromatic epoxy resin with (2) 10 to 60 parts by weight of a carboxyl group-containing vinyl polymer comprising (a) a carboxyl group-containing vinyl monomer, (b) an aromatic vinyl monomer and (c) at least one monomer selected from the group consisting of an alkyl ester, a hydroxyalkyl ester and an N-hydroxyalkylamide of an alpha,beta-ethylenically unsaturated carboxylic acid, is dispersed into an aqueous medium; and a process for production thereof.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: January 30, 1990
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Hiroaki Shimada, Yoshio Itoh, Tadami Ueno, Norio Yokomichi