Patents by Inventor Isao Kaito

Isao Kaito 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).

  • POLYMER, POLYARYLENE BLOCK COPOLYMER, POLYELECTROLYTE, POLYELECTROLYTE MEMBRANE, AND FUEL CELL
    Publication number: 20110311899
    Abstract: The polymer electrolyte membrane according to the present invention comprises a polymer electrolyte having ion-exchange groups, wherein Sp and Snp satisfy a relationship expressed by the following expression (I): Sp/Snp?0.42??(I) where Sp represents the total of peak areas obtained by measurement of a 13C-solid state nuclear magnetic resonance spectrum of the polymer electrolyte membrane, the polymer electrolyte membrane having been subjected to a first immersion treatment comprising immersing the polymer electrolyte membrane in 5 mmol/L iron (II) chloride tetrahydrate aqueous solution at 25° C. for 1 hour, and thereafter drying the polymer electrolyte membrane at 25° C.
    Type: Application
    Filed: May 21, 2009
    Publication date: December 22, 2011
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Toru Onodera, Taisuke Nakamura, Sho Kanesaka, Arihiro Yashiro, Takashi Yamada, Masamitsu Ishitobi, Shigeru Sasaki, Isao Kaito, Akira Kaito, Yuko Kaito