Patents by Inventor Masami Kawakami

Masami Kawakami 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).

  • Readily fibrillative polyvinyl alcohol fiber and method for manufacturing same
    Patent number: 11053610
    Abstract: A polyvinyl alcohol fiber that can easily be fibrillated at a low manufacture cost is provided. The readily fibrillative polyvinyl alcohol fiber contains a polyalkylene oxide in addition to a polyvinyl alcohol. A mass ratio of the polyalkylene oxide ranges from 3 to 40% relative to the total mass of the polyvinyl alcohol and the polyalkylene oxide. A method for manufacturing the polyvinyl alcohol fiber is also provided.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: July 6, 2021
    Assignee: KURARAY CO., LTD.
    Inventors: Masami Kawakami, Toshiaki Kobayashi, Hiroyuki Kawai, Shinichi Takemoto, Tomohiro Hayakawa
  • SEPARATOR FOR CAPACITOR
    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
  • READILY FIBRILLATIVE POLYVINYL ALCOHOL FIBER AND METHOD FOR MANUFACTURING SAME
    Publication number: 20180179669
    Abstract: A polyvinyl alcohol fiber that can easily be fibrillated at a low manufacture cost is provided. The readily fibrillative polyvinyl alcohol fiber contains a polyalkylene oxide in addition to a polyvinyl alcohol. A mass ratio of the polyalkylene oxide ranges from 3 to 40% relative to the total mass of the polyvinyl alcohol and the polyalkylene oxide. A method for manufacturing the polyvinyl alcohol fiber is also provided.
    Type: Application
    Filed: June 22, 2016
    Publication date: June 28, 2018
    Applicant: KURARAY CO., LTD
    Inventors: Masami KAWAKAMI, Toshiaki KOBAYASHI, Hiroyuki KAWAI, Shinichi TAKEMOTO, Tomohiro HAYAKAWA
  • Soft foam, molded product, and shock absorber comprising the molded product
    Patent number: 8580863
    Abstract: To provide a foam-molded product which is light-weight and superior in formability, flexibility and shock absorbing capacity, and which exhibits favorable tactile impression and excellent safety, as well as a shock absorber using the same that provides favorable feel in wearing.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: November 12, 2013
    Assignee: Kaneka Corporation
    Inventors: Miaki Shibaya, Masaoki Gotou, Mitsunaga Noda, Masami Kawakami