Patents by Inventor Yoshitaro Tanaka

Yoshitaro Tanaka 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).

  • Flocculant compositions and water treatment method using the same
    Patent number: 6123854
    Abstract: A flocculant composition includes an aqueous solution of a mixture of titanyl sulfate or titanium tetrachloride with a water-soluble, neutral alkali or alkaline earth metal salt at a titanium to alkali or alkaline earth metal salt ratio calculated as TiO.sub.2 of from 0.25:1 to 0.0002:1 by weight. The flocculant composition may further contain a water soluble iron salt at a titanium to iron ratio calculated as TiO.sub.2 and Fe.sub.2 O.sub.3 of from 1:1 to 40:1 by weight, or a water-soluble zirconium salt at a titanium to zirconium ratio calculated as TiO.sub.2 and ZrO.sub.2 of from 1:1 to 40:1 by weight, or a water soluble aluminum salt at a titanium to aluminum ratio calculated as TiO.sub.2 and Al.sub.2 O.sub.3 of from 1:1 to 40:1 by weight.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: September 26, 2000
    Assignee: Hinomaru Kogyo Corporation
    Inventors: Nobuo Iwane, Teruo Aoe, Takuma Miyazawa, Shigemi Aruga, Minoru Tanaka, Yoshitaro Tanaka