Patents by Inventor Naoya KIKUTA

Naoya KIKUTA 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).

  • Pretreatment liquid and ink set
    Patent number: 11512216
    Abstract: A pretreatment liquid that is used together with an aqueous inkjet ink containing a pigment and water, wherein the pretreatment liquid contains resin microparticles (A), a surfactant (B), a coagulant (C) and water, the surfactant (B) contains a polyoxyalkylene alkyl ether (b-1), and the coagulant (C) contains a polyvalent metal salt and/or a cationic polymer compound and has a water absorptivity at a temperature of 40° C. and a relative humidity of 80% of 75% by mass or less.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: November 29, 2022
    Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYOCOLOR CO., LTD.
    Inventors: Masahiro Sugihara, Yuki Sasaki, Toshihiro Tetsuka, Takaaki Koike, Akiko Imazato, Naoya Kikuta, Tomoe Tanabe
  • PRETREATMENT LIQUID AND INK SET
    Publication number: 20210130639
    Abstract: A pretreatment liquid that is used together with an aqueous inkjet ink containing a pigment and water, wherein the pretreatment liquid contains resin microparticles (A), a surfactant (B), a coagulant (C) and water, the surfactant (B) contains a polyoxyalkylene alkyl ether (b-1), and the coagulant (C) contains a polyvalent metal salt and/or a cationic polymer compound and has a water absorptivity at a temperature of 40° C. and a relative humidity of 80% of 75% by mass or less.
    Type: Application
    Filed: September 28, 2018
    Publication date: May 6, 2021
    Applicants: TOYO INK SC HOLDINGS CO., LTD., TOYOCOLOR CO., LTD.
    Inventors: Masahiro SUGIHARA, Yuki SASAKI, Toshihiro TETSUKA, Takaaki KOIKE, Akiko IMAZATO, Naoya KIKUTA, Tomoe TANABE