Patents by Inventor Hiroshi Iesako

Hiroshi Iesako 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).

  • Patent number: 6302994
    Abstract: A process for producing an article with a label, which comprises attaching, to an article, a heat-sensitive and pressure-sensitive adhesive label having an adhesive layer composed of a pressure-sensitive adhesive composition, which is an aqueous emulsion type composition comprising: (A) a water-soluble resin obtained by neutralizing a resin having an acid value of 1 meq/g or more, with a base, and (B) a polymer having an acid value of 0.6 meq/g or less and a glass transition temperature of −20° C. or lower, obtained by emulsion polymerization of a radical-polymerizable monomer, and which, when made into an aqueous film and dried at a temperature lower than 60° C., becomes a film (1) of two-phase structure wherein particles composed of the component (B) are dispersed in a continuous phase composed of the component (A) and, when the film (1) is heated to a temperature of 60° C.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: October 16, 2001
    Assignee: Toagosei Co., Ltd.
    Inventors: Daisuke Kamiya, Kiyokazu Mizutani, Yoichi Kirito, Akemi Koketsu, Makoto Niwa, Kotaro Yoneda, Hiroshi Iesako, Hitoshi Kato
  • Patent number: 6156378
    Abstract: A process for producing a pressure-sensitive adhesive sheet using an aqueous resin emulsion is disclosed. The aqueous resin emulsion is an aqueous resin emulsion that dispersed particles have a weight average particle diameter of 0.3 .mu.m or smaller and a ratio of the weight average particle diameter thereof to an arithmetic average particle diameter thereof [(weight average particle diameter)/(arithmetic average particle diameter)] is 1.0 to 1.5. The resin contained in the aqueous resin emulsion preferably comprises an alkyl (meth)acrylate monomer unit (a) having 4 to 12 carbon atoms in the alkyl moiety, an .alpha.,.beta.-ethylenically unsaturated carboxylic acid monomer unit (b), and a radically polymerizable monomer unit (c) having a cyclic structure, other than the monomer units (a) and (b), the proportions of the monomer unit (a), the monomer unit (b), and the monomer unit (c) being 45 to 97% by weight, 0.1 to 10% by weight, and 2.
    Type: Grant
    Filed: August 4, 1999
    Date of Patent: December 5, 2000
    Assignee: Toagosei Co., Ltd.
    Inventors: Akemi Koketsu, Minoru Tanaka, Hiroshi Iesako