Patents by Inventor Akemi Hisamoto

Akemi Hisamoto 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).

  • Process for producing resin-coated pigment, resin-coated pigment, aqueous pigment dispersion and aqueous colorant composition containing the same
    Patent number: 9156991
    Abstract: A process for producing a resin-coated pigment capable of providing an ink and a paint being superior in dispersion stability of a pigment and having rapid drying property, high gloss and density without containing those such as an organic solvent and a salt that cause the lowering of performance of pigment dispersion, characterized in that a pigment is dispersed in an aqueous solution in which an anionic group-containing resin is dissolved in the presence of a basic compound and then, the anionic group-containing resin is precipitated on the surface of the pigment by removing the basic compound in the aqueous solution, using an ion exchange means.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: October 13, 2015
    Assignee: SAKATA INX CORP.
    Inventors: Yoshiaki Ueno, Hideo Hisamoto, Akemi Hisamoto, Tomohiro Kita, Akinori Moriyama, Kayoko Ishizaki
  • Process for Producing Resin-Coated Pigment, Resin-Coated Pigment, Aqueous Pigment Dispersion and Aqueous Colorant Composition Containing the Same
    Publication number: 20080262122
    Abstract: A process for producing a resin-coated pigment capable of providing an ink and a paint being superior in dispersion stability of a pigment and having rapid drying property, high gloss and density without containing those such as an organic solvent and a salt that cause the lowering of performance of pigment dispersion, characterized in that a pigment is dispersed in an aqueous solution in which an anionic group-containing resin is dissolved in the presence of a basic compound and then, the anionic group-containing resin is precipitated on the surface of the pigment by removing the basic compound in the aqueous solution, using an ion exchange means.
    Type: Application
    Filed: May 25, 2005
    Publication date: October 23, 2008
    Applicant: SAKATA INX CORP.
    Inventors: Yoshiaki Ueno, Hideo Hisamoto, Akemi Hisamoto, Tomohiro Kita, Akinori Moriyama, Kayoko Ishizaki