Patents by Inventor Kumiko Lizasa

Kumiko Lizasa 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).

  • METHODS FOR PRODUCING AQUEOUS PIGMENT DISPERSION LIQUID AND WATER-BASED INK FOR INK JET RECORDING
    Publication number: 20160160050
    Abstract: A method for producing an aqueous pigment dispersion liquid, including: a kneading step of kneading a mixture of a quinacridone pigment (a), a pigment derivative (b), an organic high-molecular compound having an anionic group (c), a basic compound (d), and an acetylene glycol surfactant (e) in a closed kneader to prepare a pigment-kneaded material having a solid content in the range of 50% to 80% by mass; and a step of diluting the pigment-kneaded material with an aqueous medium. A method for producing a water-based ink for ink jet recording, including a step of diluting the aqueous pigment dispersion liquid with an aqueous medium.
    Type: Application
    Filed: September 18, 2014
    Publication date: June 9, 2016
    Applicant: DIC CORPORATION
    Inventors: Masahiro Kido, Kumiko Lizasa, Shinichi Okada