Patents by Inventor Kenichi Akune

Kenichi Akune 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