Patents by Inventor Takayuki KITAGUCHI

Takayuki KITAGUCHI 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).

  • ERASER
    Publication number: 20200369869
    Abstract: An eraser includes: a base material including a plasticizer and at least one of a resin component or an elastomer component; and a porous foam made of a resin and impregnated with the resin base material, and the plasticizer has an SP value of 8.3 or more and 10 or less.
    Type: Application
    Filed: December 11, 2018
    Publication date: November 26, 2020
    Applicant: SAKURA COLOR PRODUCTS CORPORATION
    Inventors: Shinji TSUJIO, Hiroyoshi YAMAMOTO, Nobuaki KOBAYASHI, Takayuki KITAGUCHI
  • METALLIC POWDER PIGMENT INK COMPOSITION FOR OIL-BASED MARKING PEN
    Publication number: 20180291216
    Abstract: The invention provides a metallic powder pigment ink composition for an oil-based marking pen, the ink composition comprising an organic solvent, a metal powder pigment and a combination of a first resin and a second resin, wherein the first resin is at least one selected from a ketone resin, a hydrogenated rosin resin and an ultralight-colored rosin resin and the second resin is at least one second resin selected from an acrylic resin, a styrene-acrylic resin and a styrene-maleic acid resin. The metallic powder pigment ink composition provides a marking improved in glitter.
    Type: Application
    Filed: August 23, 2016
    Publication date: October 11, 2018
    Inventors: Takayuki KITAGUCHI, Tomohiro ASOU