Patents by Inventor Kazuji Fukunaga

Kazuji Fukunaga 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).

  • Device and method with spiral mixing pipe for coagulating/condensing waste water
    Patent number: 6416213
    Abstract: A coagulating/condensing device including a spiral coagulating pipe composed of a spiral mixing pipe formed by inner and outer pipes of a multiple pipe with an inner pipe having an opening thereof formed in the outer pipe to face downstream to floc the solids by causing liquids at different electric potentials separately supplied from the inner and outer pipes to contact with each other.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: July 9, 2002
    Inventor: Kazuji Fukunaga