Patents by Inventor Noriko Itaya

Noriko Itaya 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).

  • Condensed resin dispersion and process for its production
    Patent number: 5438107
    Abstract: A condensed resin dispersion having fine particles of a condensed resin dispersed stably in a polyether polyol (c), the condensed resin being a reaction product of an aldehyde and a compound condensable with the aldehyde, or of their precondensate, wherein the fine particles of the condensed resin are fine condensed resin particles formed by the reaction and precipitation conducted in an isocyanate-modified polyether (b) obtained by reacting an organic polyisocyanate to a polyether (a) having at least one active hydrogen group reactive with an isocyanate group, or to such a polyether (a) and a low molecular weight active hydrogen-containing compound having at least one active hydrogen group, and having substantially no free isocyanate group.
    Type: Grant
    Filed: September 16, 1993
    Date of Patent: August 1, 1995
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takao Doi, Noriko Itaya, Masami Yamashita
  • Process for producing a condensed resin dispersion
    Patent number: 5344874
    Abstract: A process for producing a condensed resin dispersion, which comprises subjecting an aldehyde and a compound condensable with the aldehyde, or their precondensate, to a condensation reaction in a dispersion medium consisting essentially of water and/or an organic solvent, to precipitate fine condensed resin particles which hardly settle in said dispersion medium, and then replacing the water and/or the organic solvent by an active hydrogen-containing compound having at least two active hydrogen-containing groups reactive with isocyanate groups.
    Type: Grant
    Filed: July 8, 1991
    Date of Patent: September 6, 1994
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takao Doi, Noriko Itaya, Masami Yamashita, Nobuaki Kunii
  • Condensed resin dispersion and process for its production
    Patent number: 5290898
    Abstract: A condensed resin dispersion having fine particles of a condensed resin dispersed stably in a polyether polyol (c), the condensed resin being a reaction product of an aldehyde and a compound condensable with the aldehyde, or of their precondensate, wherein the fine particles of the condensed resin are fine condensed resin particles formed by the reaction and precipitation conducted in an isocyanate-modified polyether (b) obtained by reacting an organic polyisocyanate to a polyether (a) having at least one active hydrogen group reactive with an isocyanate group, or to such a polyether (a) and a low molecular weight active hydrogen-containing compound having at least one active hydrogen group, and having substantially no free isocyanate group.
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: March 1, 1994
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takao Doi, Noriko Itaya, Masami Yamashita
  • Process for producing a condensed resin dispersion
    Patent number: 5030685
    Abstract: A process for producing a condensed resin dispersion, which comprises subjecting an aldehyde and a compound condensable with the aldehyde, or their precondensate, to a condensation reaction in a dispersion medium consisting essentially of water and/or an organic solvent, to precipitate fine condensed resin particles which hardly settle in said dispersion medium, and then replacing the water and/or the organic solvent by an active hydrogen-containing compound having at least two active hydrogen-containing groups reactive with isocyanate groups.
    Type: Grant
    Filed: September 28, 1989
    Date of Patent: July 9, 1991
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Takao Doi, Noriko Itaya, Masami Yamashita, Nobuaki Kunii