Patents by Inventor Kazuhisa Ikawa

Kazuhisa Ikawa 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).

  • Heating medium composition, and method for feeding an oxidation inhibitor to a heat exchange apparatus
    Patent number: 7025898
    Abstract: A heating medium composition for suppressing deterioration of both a metal piping and a synthetic resin piping. The heating medium composition contains an antifreeze ingredient, water, a corrosion inhibitor, and a surfactant. The corrosion inhibitor includes a triazole compound, and the surfactant includes an anionic surfactant. A bag in a feeder provided in a given position along a circulation piping is filled with an oxidation inhibitor. By flowing a heating medium composition through the feeder, the oxidation inhibitor is gradually dissolved in the heating medium composition.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: April 11, 2006
    Assignees: Showa Water Industries Co., Ltd., Osaka Gas Co., Ltd.
    Inventors: Masumi Mizutani, Akihiro Sagasaki, Koichi Hamada, Yuji Higuchi, Kazuhisa Ikawa
  • Heating medium composition, and method for feeding an oxidation inhibitor to a heat exchange apparatus
    Publication number: 20030127624
    Abstract: A heating medium composition for suppressing deterioration of both a metal piping and a synthetic resin piping. The heating medium composition contains an antifreeze ingredient, water, a corrosion inhibitor, and a surfactant. The corrosion inhibitor includes a triazole compound, and the surfactant includes an anionic surfactant. A bag in a feeder provided in a given position along a circulation piping is filled with an oxidation inhibitor. By flowing a heating medium composition through the feeder, the oxidation inhibitor is gradually dissolved in the heating medium composition.
    Type: Application
    Filed: July 30, 2002
    Publication date: July 10, 2003
    Inventors: Masumi Mizutani, Akihiro Sagasaki, Koichi Hamada, Yuji Higuchi, Kazuhisa Ikawa