Patents by Inventor Yohta Mori

Yohta Mori 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).

  • Porous membrane and process for preparing the same
    Patent number: 8765308
    Abstract: The present invention relates to a porous membrane containing cellulose fibers, wherein the cellulose fibers contain 5% by weight or more of cellulose fibers with a diameter of 1 ?m or more, relative to the total weight of the cellulose fibers, the mode diameter (maximal frequency) of the pore distribution determined by the mercury penetration method is less than 0.3 ?m, the air resistance per thickness of 10 ?m is from 20 to 600 seconds, and the porous membrane has a volume resistivity of 1500 ?·cm or less determined by alternate current with a frequency of 20 kHz in which the porous membrane is impregnated with 1 mol/LiPF6/propylene carbonate solution. The porous membrane according to the present invention can provide a separator for electrochemical devices with superior properties at a reasonable cost.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: July 1, 2014
    Assignee: Tokushu Tokai Paper Co., Ltd.
    Inventors: Yoshiharu Machii, Satoshi Nemoto, Yohta Mori
  • POROUS MEMBRANE AND PROCESS FOR PREPARING THE SAME
    Publication number: 20130280616
    Abstract: The present invention relates to a porous membrane containing cellulose fibers, wherein the cellulose fibers contain 5% by weight or more of cellulose fibers with a diameter of 1 ?m or more, relative to the total weight of the cellulose fibers, the mode diameter (maximal frequency) of the pore distribution determined by the mercury penetration method is less than 0.3 ?m, the air resistance per thickness of 10 ?m is from 20 to 600 seconds, and the porous membrane has a volume resistivity of 1500 ?·cm or less determined by alternate current with a frequency of 20 kHz in which the porous membrane is impregnated with 1 mol/LiPF6/propylene carbonate solution. The porous membrane according to the present invention can provide a separator for electrochemical devices with superior properties at a reasonable cost.
    Type: Application
    Filed: October 12, 2012
    Publication date: October 24, 2013
    Applicant: Tokushu Tokai Paper Co., Ltd.
    Inventors: Yoshiharu Machii, Satoshi Nemoto, Yohta Mori