Patents by Inventor Hiroyo KONISHI

Hiroyo KONISHI 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).

  • Publication number: 20210115679
    Abstract: This disclosure relates to vinyl composition tile that does not use phthalate or terephthalate, has many color variations with a limited number of pigments, and has clear pattern. A vinyl composition tile, comprising 100 parts by mass of a vinyl chloride resin, 400 to 600 parts by mass of calcium carbonate, and 20 to 40 parts by mass of a fatty acid alkyl ester plasticizer. A method for manufacturing vinyl composition tile, comprising the successive steps of obtaining melt mixture by heating 100 parts by mass of vinyl chloride resin and 400-600 parts by mass of calcium carbonate with 20-40 parts by mass of fatty alkyl ester plasticizer, milling the mixture to obtain plates, and punching out the plates to obtain vinyl composition tiles.
    Type: Application
    Filed: September 25, 2020
    Publication date: April 22, 2021
    Applicant: TAJIMA ROOFING INC.
    Inventors: Shuichi ISAZAWA, Hiroyo KONISHI, Yasuhisa YAMADA, Naosuke FUSE