Patents by Inventor Shinichio Aoyagi

Shinichio Aoyagi 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).

  • Emulsion binder, aqueous pigment ink for inkjet containing same, and method for producing emulsion binder
    Patent number: 9102777
    Abstract: Disclosed is an emulsion binder containing an A-B block copolymer. The A-B block copolymer has a number average molecular weight of 5,000 to 100,000, and a polydispersity index (weight average molecular weight/number average molecular weight) of not greater than 1.7. The polymer block A has an acid value of 0 to 30 mgKOH/g and a glass transition point of not higher than 60° C. The polymer block B has an acid value of 75 to 250 mgKOH/g. The A-B block copolymer has been neutralized with an alkaline material, and has been allowed to self-emulsify in an aqueous medium to form emulsion particles having an average particle size of 30 to 300 nm.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: August 11, 2015
    Assignees: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD., KYOTO UNIVERSITY
    Inventors: Hiroyuki Shimanaka, Yoshikazu Murakami, Shinichio Aoyagi, Atsushi Goto, Hironori Kaji
  • EMULSION BINDER, AQUEOUS PIGMENT INK FOR INKJET CONTAINING SAME, AND METHOD FOR PRODUCING EMULSION BINDER
    Publication number: 20130338273
    Abstract: Disclosed is an emulsion binder containing an A-B block copolymer. The A-B block copolymer has a number average molecular weight of 5,000 to 100,000, and a polydispersity index (weight average molecular weight/number average molecular weight) of not greater than 1.7. The polymer block A has an acid value of 0 to 30 mgKOH/g and a glass transition point of not higher than 60° C. The polymer block B has an acid value of 75 to 250 mgKOH/g. The A-B block copolymer has been neutralized with an alkaline material, and has been allowed to self-emulsify in an aqueous medium to form emulsion particles having an average particle size of 30 to 300 nm.
    Type: Application
    Filed: November 28, 2011
    Publication date: December 19, 2013
    Applicants: KYOTO UNIVERSITY, DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.
    Inventors: Hiroyuki Shimanaka, Yoshikazu Murakami, Shinichio Aoyagi, Atsushi Goto, Hironori Kaji