Patents by Inventor Hisayuki Kawano

Hisayuki Kawano 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 producing ozone-containing water
    Patent number: 4992216
    Abstract: Flowing an ozone-containing gas through one passage which is either the space between an outer tube and an inner tube disposed in the outer tube or the space in the inner tube, and flowing an aqueous liquid through the passage, which the ozone-containing gas is not flowing through, provides aqueous ozone solutions of high concentration and purity provided that the inner tube possesses a number of pores with an average diameter of 2 to 4 microns.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: February 12, 1991
    Assignee: Ise Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kozo Saita, Hisayuki Kawano, Takeshi Utsuki