Patents by Inventor Yoshinada Yokoyama

Yoshinada Yokoyama 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).

  • Method for preventing adhesion of scales in service water or circulating industrial water by applying the magnetic field
    Patent number: 5480557
    Abstract: An effective method of preventing adhesion of scales in service water or circulating industrial water containing calcium carbonate and silicic acid. The treated water is circulated at a flow velocity of more than 0.5 m/sec. through a pipe, and a magnetic field having a magnetic flux density of, for example, 13500 Gs. is applied to the circulating water.
    Type: Grant
    Filed: July 12, 1994
    Date of Patent: January 2, 1996
    Assignee: Heisei Riken Kabushiki Kaisha
    Inventors: Miyoji Kawasaki, Masanori Hirose, Toshitsugu Suzuki, Tei Matsuura, Yoshinada Yokoyama