Patents by Inventor Chikako YAMASHITA

Chikako YAMASHITA 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).

  • Polylactic acid-containing aqueous dispersion
    Patent number: 10987299
    Abstract: Provided is a polylactic-acid-containing aqueous dispersion capable of forming a transparent film at room temperature. A polylactic-acid-containing aqueous dispersion contains (1) polylactic acid; (2) at least one plasticizer selected from the group consisting of dimethyl adipate, diethyl adipate, dipropyl adipate, diisopropyl adipate, dibutyl adipate, diallyl adipate, bis(2-butoxyethyl) adipate, bis(2-methoxyethyl) adipate, dimethyl succinate, dimethyl glutarate, diethyl sebacate, diisopropyl sebacate, and mixtures thereof; (3) at least one dispersion stabilizer selected from the group consisting of cationic polymers, anionic polymers, polyvinyl alcohols, and non-ionic surfactants; and (4) water.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: April 27, 2021
    Assignees: TOYOBO CO., LTD., DAITO KASEI KOGYO CO., LTD.
    Inventors: Shuhei Yamamoto, Yoshihisa Kasukabe, Chikako Yamashita, Takumi Tanaka, Noboru Nagatani
  • POLYLACTIC ACID-CONTAINING AQUEOUS DISPERSION
    Publication number: 20170367964
    Abstract: Provided is a polylactic-acid-containing aqueous dispersion capable of forming a transparent film at room temperature. A polylactic-acid-containing aqueous dispersion contains (1) polylactic acid; (2) at least one plasticizer selected from the group consisting of dimethyl adipate, diethyl adipate, dipropyl adipate, diisopropyl adipate, dibutyl adipate, diallyl adipate, bis(2-butoxyethyl) adipate, bis(2-methoxyethyl) adipate, dimethyl succinate, dimethyl glutarate, diethyl sebacate, diisopropyl sebacate, and mixtures thereof; (3) at least one dispersion stabilizer selected from the group consisting of cationic polymers, anionic polymers, polyvinyl alcohols, and non-ionic surfactants; and (4) water.
    Type: Application
    Filed: January 25, 2016
    Publication date: December 28, 2017
    Applicants: TOYOBO CO., LTD., DAITO KASEI KOGYO CO., LTD.
    Inventors: Shuhei YAMAMOTO, Yoshihisa KASUKABE, Chikako YAMASHITA, Takumi TANAKA, Noboru NAGATANI