Patents by Inventor Tomoki Hirasawa

Tomoki Hirasawa 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).

  • Patent number: 10760215
    Abstract: The present invention relates to glass plate-interleaving paper, which is used for a glass plate for use in a display, and in which wood pulp is used as a raw material, and the number of foreign substances having a Mohs hardness of 4 or higher present on the surface of the glass plate-interleaving paper is fewer than 0.010 per square meter. Even if the glass plate-interleaving paper of the present invention is used in a conventional way as glass plate-interleaving paper with respect to a glass plate used as a substrate material for a flat panel display in which high cleanliness and high quality are required, the glass plate-interleaving paper is able to prevent damage or cracks occurring on the surface of the glass plate.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: September 1, 2020
    Assignee: TOKUSHU TOKAI PAPER CO., LTD.
    Inventors: Shinichi Akahori, Tomoki Hirasawa, Yoshiaki Tomotake, Yasuhiko Asai, Takayuki Nishimura
  • Publication number: 20170073897
    Abstract: The present invention relates to glass plate-interleaving paper, which is used for a glass plate for use in a display, and in which wood pulp is used as a raw material, and the number of foreign substances having a Mohs hardness of 4 or higher present on the surface of the glass plate-interleaving paper is fewer than 0.010 per square meter. Even if the glass plate-interleaving paper of the present invention is used in a conventional way as glass plate-interleaving paper with respect to a glass plate used as a substrate material for a flat panel display in which high cleanliness and high quality are required, the glass plate-interleaving paper is able to prevent damage or cracks occurring on the surface of the glass plate.
    Type: Application
    Filed: March 13, 2015
    Publication date: March 16, 2017
    Inventors: Shinichi AKAHORI, Tomoki HIRASAWA, Yoshiaki TOMOTAKE, Yasuhiko ASAI, Takayuki NISHIMURA
  • Publication number: 20160108580
    Abstract: Glass plate-interleaving paper and a process for preparing glass plate-interleaving paper by using wood pulp wherein glass plates are at least one of glass plates for a Liquid Crystal Display (LCD) and an Organic Electro-Luminescent Display (OELD), wherein an amount of silicone contained in the wood pulp is 0.5 ppm or less with respect to an absolute dry mass of the wood pulp.
    Type: Application
    Filed: December 22, 2015
    Publication date: April 21, 2016
    Inventors: Yasuhiko ASAI, Shinichi AKAHORI, Tomoki HIRASAWA, Yoshiaki TOMOTAKE
  • Publication number: 20150274444
    Abstract: A method for preventing or controlling contamination of a surface of glass plates includes the steps of inserting an interleaving paper between the glass plates wherein the interleaving paper includes 0.5 ppm or less of silicone with respect to an absolute dry matter of the paper.
    Type: Application
    Filed: June 11, 2015
    Publication date: October 1, 2015
    Inventors: Yasuhiko ASAI, Shinichi AKAHORI, Tomoki HIRASAWA, Yoshiaki TOMOTAKE
  • Publication number: 20150233059
    Abstract: The present invention relates to wood pulp for glass plate-interleaving paper in which an amount of silicone contained in the wood pulp is 0.5 ppm or less with respect to an absolute dry mass of the pulp, as well as relates to interleaving paper for glass plates of which a raw material is the wood pulp, in which an amount of silicone contained in paper is 0.5 ppm or less with respect to the absolute dry matter of paper. The interleaving paper for glass plates formed from the wood pulp of the present invention, as well as interleaving paper for glass plates of the present invention are able to remarkably control contamination of silicone to the surface of glass plates for use as substrate material for flat panel displays for which a high degree of cleanliness and high quality are required.
    Type: Application
    Filed: April 30, 2015
    Publication date: August 20, 2015
    Inventors: Yasuhiko ASAI, Shinichi AKAHORI, Tomoki HIRASAWA, Yoshiaki TOMOTAKE
  • Publication number: 20150090413
    Abstract: The present invention relates to wood pulp for glass plate-interleaving paper in which an amount of silicone contained in the wood pulp is 0.5 ppm or less with respect to an absolute dry mass of the pulp, as well as relates to interleaving paper for glass plates of which a raw material is the wood pulp, in which an amount of silicone contained in paper is 0.5 ppm or less with respect to the absolute dry matter of paper. The interleaving paper for glass plates formed from the wood pulp of the present invention, as well as interleaving paper for glass plates of the present invention are able to remarkably control contamination of silicone to the surface of glass plates for use as substrate material for flat panel displays for which a high degree of cleanliness and high quality are required.
    Type: Application
    Filed: December 26, 2013
    Publication date: April 2, 2015
    Applicant: Tokushu Tokai Paper Co., Ltd.
    Inventors: Yasuhiko Asai, Shinichi Akahori, Tomoki Hirasawa, Yoshiaki Tomotake