Patents by Inventor Shojiro Kai

Shojiro Kai 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: 20100015498
    Abstract: Provided is a methanol fuel cell cartridge formed of a container comprising a polyester-based resin layer which has a methanol vapor permeability coefficient at 40° C. of 3 ?g·mm/m2·hr or less and a cation index in a methanol immersion test of 30 or less, and is produced by using a titanium-based catalyst. According to the present invention, the methanol fuel cell cartridge can be produced at low cost, which is excellent in impermeability (barrier performance) to methanol and oxygen, can be downsized, reduced in weight, and increased in transparency, and does not cause deterioration in battery performance of the fuel cell during operation.
    Type: Application
    Filed: May 11, 2007
    Publication date: January 21, 2010
    Inventors: Daisuke Imoda, Kouki Kinouchi, Shojiro Kai, Hiroyuki Hasebe
  • Publication number: 20090197150
    Abstract: A fuel cell cartridge for containing fuel for fuel cells, comprising a polyester resin, wherein after the fuel is contained and preserved at 60° C. for one week, a change of density at the bottom portion and the mouth portion is 0.01 g/cm3 or less. Even when methanol of a high concentration is contained, the fuel cell cartridge maintains excellent appearance effectively preventing the occurrence of whitening in the container and, particularly, at the mouth portion and the bottom portion thereof, and effectively suppressing a decrease in the shock resistance.
    Type: Application
    Filed: May 24, 2007
    Publication date: August 6, 2009
    Applicants: Toyo Seikan Kaisha, Ltd., Kabushiki Kaisha Toshiba
    Inventors: Kenjiro Tanaka, Daisuke Imoda, Taku Hosokai, Toshiki Sakaguchi, Shojiro Kai, Koichi Kawamura