Patents by Inventor Ik-Sun Choi

Ik-Sun Choi 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).

  • Base paper for eco-friendly paper cups
    Patent number: 11840807
    Abstract: Disclosed is a base paper for eco-friendly paper cups and, more specifically, to a base paper for eco-friendly paper cups, which is eco-friendly by having recyclability and biodegradability while retaining water resistance, oil resistance, heat sealability, and block resistance required as a base paper for paper cups.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: December 12, 2023
    Assignee: HANKUK PAPER MFG CO., LTD.
    Inventors: Ik-Sun Choi, Hak-Ju Lee, Yoon-Hee Noh, Jong-Soo Kim
  • Base Paper for Eco-Friendly Paper Cups
    Publication number: 20210285157
    Abstract: Disclosed is a base paper for eco-friendly paper cups and, more specifically, to a base paper for eco-friendly paper cups, which is eco-friendly by having recyclability and biodegradability while retaining water resistance, oil resistance, heat sealability, and block resistance required as a base paper for paper cups.
    Type: Application
    Filed: July 8, 2020
    Publication date: September 16, 2021
    Inventors: Ik-Sun Choi, Hak-Ju Lee, Yoon-Hee Noh, Jong-Soo Kim
  • Method for Manufacturing a Base Paper for Eco-Friendly Paper Cups
    Publication number: 20210285158
    Abstract: Disclosed is a method for manufacturing a base paper for eco-friendly paper cups and, more specifically, to a method for manufacturing a base paper for eco-friendly paper cups, the method enabling the manufacturing of a base paper for eco-friendly cups, which has excellent heat sealability, water resistance, and block resistance, facilitates recycling, and is biodegradable in nature.
    Type: Application
    Filed: July 8, 2020
    Publication date: September 16, 2021
    Inventors: Ik-Sun Choi, Hak-Ju Lee, Yoon-Hee Noh, Jong-Soo Kim