Patents by Inventor Kiyonori Yasuike

Kiyonori Yasuike 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).

  • Ink composition, writing instrument and method for producing ink composition
    Patent number: 11697743
    Abstract: An ink composition contains a carbon black and/or an organic pigment, water, a polysaccharide, two or more of diols, and particles of an acrylic resin. The two or more of diols include a first diol having from 5 to 7 carbon atoms and a second diol having from 1 to 4 carbon atoms, and a content of the first diol in the ink composition is 0.05 wt % or more.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: July 11, 2023
    Inventors: Sachiko Onuki, Kiyonori Yasuike, Haruka Takai, Hiroyuki Saitou
  • INK COMPOSITION , WRITING INSTRUMENT AND METHOD FOR PRODUCING INK COMPOSITION
    Publication number: 20210095144
    Abstract: An ink composition contains a carbon black and/or an organic pigment, water, a polysaccharide, two or more of diols, and particles of an acrylic resin. The two or more of diols include a first diol having from 5 to 7 carbon atoms and a second diol having from 1 to 4 carbon atoms, and a content of the first diol in the ink composition is 0.05 wt % or more.
    Type: Application
    Filed: June 14, 2017
    Publication date: April 1, 2021
    Inventors: Sachiko ONUKI, Kiyonori YASUIKE, Haruka TAKAI, Hiroyuki SAITOU
  • Ink for ballpoint pens and ballpoint pen using same
    Patent number: 8771410
    Abstract: An ink composition for ballpoint pens comprises a coloring agent, a liquid medium, a polyoxyethylene castor oil and/or a polyoxyethylene hardened castor oil, or a derivative thereof, and one compound or a mixture of two or more compounds selected from the group consisting of a monoalkyl ether phosphoric acid, a polyoxyethylene monoalkyl ether phosphoric acid, a dialkyl ether phosphoric acid, a polyoxyethylene dialkyl ether phosphoric acid, a trialkyl ether phosphoric acid, and a polyoxyethylene trialkyl ether phosphoric acid.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: July 8, 2014
    Assignee: Pentel Kabushiki Kaisha
    Inventors: Aya Otsubo, Ikuo Takagishi, Kiyonori Yasuike, Hiroki Kimura, Takashi Sekine
  • INK FOR BALLPOINT PENS AND BALLPOINT PEN USING SAME
    Publication number: 20110271870
    Abstract: A ballpoint pen ink ensuring a very soft and smooth writing feel even when a strong writing pressure is applied, is obtained. A ballpoint pen ink containing a colorant, a liquid medium, a polyoxyethylene castor oil and/or a polyoxyethylene hardened castor oil, or a derivative thereof, and one kind or a mixture of two or more kinds selected from a monoalkyl ether phosphoric acid, a polyoxyethylene monoalkyl ether phosphoric acid, a dialkyl ether phosphoric acid, a polyoxyethylene dialkyl ether phosphoric acid, a trialkyl ether phosphoric acid, a polyoxyethylene trialkyl ether phosphoric acid and their neutralization products or solutions.
    Type: Application
    Filed: January 22, 2010
    Publication date: November 10, 2011
    Applicant: Pentel Kabushiki Kaisha
    Inventors: Aya Otsubo, Ikuo Takagishi, Kiyonori Yasuike, Hiroki Kimura, Takashi Sekine