Patents by Inventor Tsuyoshi Yoshidome

Tsuyoshi Yoshidome 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).

  • Bromine-impregnated activated carbon and process for producing the same
    Publication number: 20050043172
    Abstract: Bromine-impregnated activated carbon which is obtainable by being impregnated with bromine in an amount of 3 to 20% by weight into an activated carbon which has 44.0 to 60.0% by weight of a water retention ratio and less than 0.01% by weight of a chloride content can effectively remove alkyl sulfides from the gas containing sulfur compounds such as hydrogen sulfide, mercaptans and alkyl sulfides at a low concentration.
    Type: Application
    Filed: August 11, 2004
    Publication date: February 24, 2005
    Inventors: Masanori Tsuji, Masanori Yamanaka, Tsuyoshi Yoshidome
  • Bromine-impregnated activated carbon and process for preparing the same
    Patent number: 6514907
    Abstract: A bromine-impregnated activated carbon wherein the contents of any alkali metal, any alkali earth metal and iron are not higher than 0.3 wt % and the content of bromine is not lower than 3 wt %, with respect to the weight of a material activated carbon. The bromine-impregnated activated carbon has improved adsorption characteristics to the alkyl sulfides, which have not been sufficiently removed by activated carbons prepared by the conventional techniques. Further, variations in the absorption characteristics can be reduced and the activated carbon can exhibit a stable performance in removing the alkyl sulfides.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: February 4, 2003
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Yoshio Tsutsumi, Teruo Fukui, Katsuya Noguchi, Takashi Kobayashi, Ayako Kobayashi, Tsuyoshi Yoshidome
  • BROMINE-IMPREGNATED ACTIVATED CARBON AND PROCESS FOR PREPARING THE SAME
    Publication number: 20010002387
    Abstract: A bromine-impregnated activated carbon wherein the contents of any alkali metal, any alkali earth metal and iron are not higher than 0.3 wt % and the content of bromine is not lower than 3 wt %, with respect to the weight of a material activated carbon. The bromine-impregnated activated carbon has improved adsorption characteristics to the alkyl sulfides, which have not been sufficiently removed by activated carbons prepared by the conventional techniques. Further, variations in the absorption characteristics can be reduced and the activated carbon can exhibit a stable performance in removing the alkyl sulfides.
    Type: Application
    Filed: July 24, 1998
    Publication date: May 31, 2001
    Applicant: Yoshio Tsutsumi
    Inventors: YOSHIO TSUTSUMI, TERUO FUKUI, KATSUYA NOGUCHI, TAKASHI KOBAYASHI, AYAKO KOBAYASHI, TSUYOSHI YOSHIDOME