Patents by Inventor Hirohiko KOIZUMI

Hirohiko KOIZUMI 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).

  • Methods for deinking UV prints
    Patent number: 11560672
    Abstract: The present invention aims to develop a technique for efficiently preparing deinked pulp from prints made with UV-curable inks. According to the processes for preparing deinked pulp of the present invention, high quality deinked pulp can be obtained by performing the steps of: disintegrating printed waste paper containing UV prints in water to give a waste paper slurry; and applying a mechanical process to the waste paper slurry using a rotary disintegrator.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: January 24, 2023
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Hirohiko Koizumi, Masato Takayama, Seiki Yoneshige, Shisei Goto
  • METHODS FOR DEINKING UV PRINTS
    Publication number: 20210025113
    Abstract: The present invention aims to develop a technique for efficiently preparing deinked pulp from prints made with UV-curable inks. According to the processes for preparing deinked pulp of the present invention, high quality deinked pulp can be obtained by performing the steps of: disintegrating printed waste paper containing UV prints in water to give a waste paper slurry; and applying a mechanical process to the waste paper slurry using a rotary disintegrator.
    Type: Application
    Filed: February 21, 2019
    Publication date: January 28, 2021
    Inventors: Hirohiko KOIZUMI, Masato TAKAYAMA, Seiki YONESHIGE, Shisei GOTO