Patents by Inventor Kenzo Shimakawa

Kenzo Shimakawa 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).

  • Purifier of noxious gas and method for manufacturing the same
    Patent number: 6743402
    Abstract: A purifier of a noxious gas is provided with structure for supplying a gas containing a noxious gas component, a buffer using a liquid which dissolves the noxious gas component in the supplied gas temporarily and later releases the dissolved noxious gas component, and structure for purifying the noxious gas component in the gas supplied from the buffer means. The liquid in the buffer dissolves the noxious gas component when the concentration of the noxious gas component in the supplied gas is high and releases the noxious gas component dissolved thus far when the concentration is low. When the noxious gas is ethylene oxide, water is used as the liquid.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: June 1, 2004
    Inventor: Kenzo Shimakawa
  • Purifier of noxious gas and method for manufacturing the same
    Publication number: 20020064486
    Abstract: A purifier of a noxious gas is provided with means for supplying a gas containing a noxious gas component, buffer means using a liquid which dissolves the noxious gas component in the supplied gas temporarily and later releases the dissolved noxious gas component, and means for purifying the noxious gas component in the gas supplied from the buffer means. The liquid in the buffer means dissolves the noxious gas component when the concentration of the noxious gas component in the supplied gas is high and releases the noxious gas component dissolved thus far when the concentration is low. When the noxious gas is ethylene oxide, water is used as the liquid.
    Type: Application
    Filed: January 8, 2002
    Publication date: May 30, 2002
    Applicant: SHIMAKAWA SEISAKUSYO Co., Ltd.
    Inventor: Kenzo Shimakawa