Patents by Inventor Toshimichi KUSUNOKI

Toshimichi KUSUNOKI 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).

  • Publication number: 20210111463
    Abstract: To provide a separator which has a combination of a preferable air permeability enabling high prevention of internal short circuit and a high retention rate of such an air permeability in an electrolytic solution, and has more improved uniformity of the air permeability. A separator comprising a porous sheet and cellulose nanofibers, wherein the porous sheet comprises a binder component having the SP value of 11 to 16 (cal/cm3)1/2, and the porous sheet has the cellulose nanofibers at the inside and on the surface thereof, and wherein the cellulose nanofibers are combined with the porous sheet by fusion of the binder component.
    Type: Application
    Filed: December 25, 2018
    Publication date: April 15, 2021
    Applicant: KURARAY CO., LTD.
    Inventors: Tomoki SAKAI, Hiroyuki KAWAI, Tomohiro HAYAKAWA, Toshimichi KUSUNOKI
  • Patent number: 10533287
    Abstract: Provided is a dispersant for carbon fibers which allows uniform dispersion of relatively long carbon fibers, e.g., carbon fibers with a length of 12.5 mm or more, particularly 10.0-100.0 mm, more particularly 12.5-50.0 mm in an aqueous medium. A dispersant for carbon fibers used by combining: (A) a random copolymer of phenylglycidyl ether and ethylene oxide, or a random copolymer of phenylglycidyl ether, ethylene oxide and propylene oxide; and (B) a polyether-based polyurethane resin based on a bifunctional polyol and hexamethylene diisocyanate, the bifunctional polyol being polyethylene glycol and/or an ethylene oxide-propylene oxide random copolymer.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: January 14, 2020
    Assignee: KURARAY CO., LTD.
    Inventors: Tomohiro Hayakawa, Toshimichi Kusunoki, Hiroyuki Kawai, Hideo Kiyoyama
  • Publication number: 20190360149
    Abstract: To provide a thermoplastic resin fiber to which a dispersant is attached, which can effectively disperse carbon fibers. A thermoplastic resin fiber to which a dispersant containing a random copolymer (A) of glycidyl ether and an alkylene oxide is attached in an amount of 0.1 to 20% by mass based on a total mass of thermoplastic resin fibers to which a dispersant is not attached.
    Type: Application
    Filed: December 26, 2017
    Publication date: November 28, 2019
    Applicant: KURARAY CO., LTD.
    Inventors: Tomoki SAKAI, Hiroyuki KAWAI, Tomohiro HAYAKAWA, Toshimichi KUSUNOKI
  • Publication number: 20190318884
    Abstract: An object of the present invention is to provide: a capacitor separator which not only has a high strength but also exhibits a low internal resistance when used in a capacitor; and a method of producing the same. The present invention relates to A capacitor separator comprising fibrillated fibers consisting of a polyvinyl alcohol-based resin in an amount of not less than 30% by weight based on a total weight of the separator.
    Type: Application
    Filed: June 29, 2017
    Publication date: October 17, 2019
    Applicant: KURARAY CO., LTD.
    Inventors: Tomohiro HAYAKAWA, Toshimichi KUSUNOKI, Masami KAWAKAMI
  • Patent number: 10446820
    Abstract: An alkaline battery separator having alkali-resistant fibers, beaten cellulose fibers and a binder, wherein an overall freeness, in terms of CSF, is at least 700 ml and at most 765 ml; weight ratios of the alkali-resistant fibers and the beaten cellulose fibers are 28:72 to 72:28; the beaten cellulose fibers comprise mercerized natural wood fibers having a freeness, in terms of CSF, of at least 150 ml and less than 550 ml; and at least a portion of the alkali-resistant fibers is polyvinyl alcohol-based fibers.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: October 15, 2019
    Assignee: KURARAY CO., LTD.
    Inventors: Tomohiro Hayakawa, Toshimichi Kusunoki, Hiroyuki Kawai, Koichi Kambe
  • Publication number: 20180313037
    Abstract: Provided is a dispersant for carbon fibers which allows uniform dispersion of relatively long carbon fibers, e.g., carbon fibers with a length of 12.5 mm or more, particularly 10.0-100.0 mm, more particularly 12.5-50.0 mm in an aqueous medium. A dispersant for carbon fibers used by combining: (A) a random copolymer of phenylglycidyl ether and ethylene oxide, or a random copolymer of phenylglycidyl ether, ethylene oxide and propylene oxide; and (B) a polyether-based polyurethane resin based on a bifunctional polyol and hexamethylene diisocyanate, the bifunctional polyol being polyethylene glycol and/or an ethylene oxide-propylene oxide random copolymer.
    Type: Application
    Filed: September 27, 2016
    Publication date: November 1, 2018
    Applicant: KURARAY CO., LTD.
    Inventors: Tomohiro HAYAKAWA, Toshimichi KUSUNOKI, Hiroyuki KAWAI, Hideo KIYOYAMA
  • Publication number: 20180269450
    Abstract: The present invention relates to an alkaline battery separator comprising alkali-resistant fibers, beaten cellulose fibers, and a binder, wherein 1) an overall freeness, in terms of CSF, is at least 700 ml, wherein 2) weight ratios of the alkali-resistant fibers and the beaten cellulose fibers are 28:72 to 72:28, and wherein 3) the beaten cellulose fibers comprise mercerized natural wood fibers having a freeness, in terms of CSF, of at least 150 ml and less than 550 ml.
    Type: Application
    Filed: September 14, 2016
    Publication date: September 20, 2018
    Applicant: KURARAY CO., LTD.
    Inventors: Tomohiro HAYAKAWA, Toshimichi KUSUNOKI, Hiroyuki KAWAI, Koichi KAMBE