Patents by Inventor Tsuneo Sugawara

Tsuneo Sugawara 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).

  • Descaling method and descaling apparatus
    Patent number: 7351341
    Abstract: This invention is to provide a method of efficiently removing scales adhered to a pipe and the like. A descaled object with scales deposited thereto is covered with a solvent at least on its scaled surface. A magnetic field is generated by supply a frequency signal to a coil, and the descaled object and the solvent are disposed within this magnetic field. Signals having frequencies that are set beforehand at every scale are supplied to the coils as the frequency signals. The frequencies of the frequency signals supplied to the coils and which are set beforehand are frequencies required when an electric current flows through the solvent which covers the scales.
    Type: Grant
    Filed: May 8, 2003
    Date of Patent: April 1, 2008
    Assignees: Royal Kiki Co., Ltd., Measurement Technical Laboratory Co., Ltd.
    Inventors: Kiyoshi Tsuboi, Hajime Yuasa, Tsuneo Sugawara
  • Descaling method and descaling apparatus
    Publication number: 20050161379
    Abstract: This invention is to provide a method of efficiently removing scales adhered to a pipe and the like. A descaled object with scales deposited thereto is covered with a solvent at least on its scaled surface. A magnetic field is generated by supply a frequency signal to a coil, and the descaled object and the solvent are disposed within this magnetic field. Signals having frequencies that are set beforehand at every scale are supplied to the coils as the frequency signals. The frequencies of the frequency signals supplied to the coils and which are set beforehand are frequencies required when an electric current flows through the solvent which covers the scales.
    Type: Application
    Filed: May 8, 2003
    Publication date: July 28, 2005
    Applicant: Measurement Technical Laboratory Co., LTd.
    Inventors: Kiyoshi Tsuboi, Hajime Yuasa, Tsuneo Sugawara