Patents by Inventor Tomiko MATSUMOTO

Tomiko MATSUMOTO 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).

  • Polyolefin microporous membrane and production method thereof
    Patent number: 10079378
    Abstract: A polyolefin microporous membrane is disclosed. The membrane includes at least one microporous membrane layer, where the microporous membrane layer has an air permeability between about 100 sec/100 cc and about 220 sec/100 cc, a pin puncture strength of at least 550 gf, and a crystallization half time t1/2 of from 10 to 35 minutes when subjected to isothermal crystallization at 117° C. The air permeability and the pin puncture strength are normalized to a thickness of 16 ?m.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: September 18, 2018
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Tomiko Matsumoto, Masami Sugata, Koichi Kono
  • POLYOLEFIN MICROPOROUS MEMBRANE AND PRODUCTION METHOD THEREOF
    Publication number: 20170092920
    Abstract: A polyolefin microporous membrane is disclosed. The membrane includes at least one microporous membrane layer, where the microporous membrane layer has an air permeability between about 100 sec/100 cc and about 220 sec/100 cc, a pin puncture strength of at least 550 gf, and a crystallization half time t1/2 of from 10 to 35 minutes when subjected to isothermal crystallization at 117° C. The air permeability and the pin puncture strength are normalized to a thickness of 16 ?m.
    Type: Application
    Filed: May 28, 2015
    Publication date: March 30, 2017
    Applicant: TORAY BATTERY SEPARATOR FILM CO., LTD.
    Inventors: Tomiko MATSUMOTO, Masami SUGATA, Koichi KONO