Patents by Inventor Reiko Funato

Reiko Funato 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).

  • Paper-making process
    Patent number: 5180473
    Abstract: Disclosed is a paper-making process for preparing a paper from a paper stock suspension, which is characterized by adding water-swellable cationic polymer particles optionally together with an acrylamide polymer to the suspension as a retention-improving agent. In the process, the stability of the retention even under high shearing force in the paper-making step is improved, the load for recovery of white water and treatment of waste water drained is reduced and the abrasion of paper-making wires is reduced.
    Type: Grant
    Filed: May 15, 1991
    Date of Patent: January 19, 1993
    Assignee: Mitsui-Cyanamid, Ltd.
    Inventors: Kenichi Akune, Naotaka Watanabe, Yukihiro Inomiya, Hiroshi Itoda, Takeo Arai, Reiko Funato
  • Method of treating starch-containing water
    Patent number: 5022999
    Abstract: A method of treating starch-containing water comprises the step of adding water swellable, cationic polymerizate particles to the starch-containing water. The starch is soluble starch. The water-swellable cationic polymer particles are polymer particles of a crosslinking monomer and either a cationic vinyl monomer or a cationic vinyl monomer and a nonionic vinyl monomer.
    Type: Grant
    Filed: September 22, 1989
    Date of Patent: June 11, 1991
    Assignee: Mitsui-Cyanamid, Ltd.
    Inventors: Naotaka Watanabe, Hiroshi Itoda, Reiko Funato