Patents by Inventor Masamitsu Mogi

Masamitsu Mogi 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 of decreasing unreacted monomer in vinyl polymer and a toner resin in which unreacted monomer has been decreased
    Patent number: 6627681
    Abstract: The method of decreasing unreacted monomer in vinyl polymer of the present invention is a method comprising adding a water-soluble inorganic salt that is able to solubilize unreacted monomer contained in vinyl polymer to an aqueous dispersion in which particles of vinyl polymer are dispersed in an aqueous medium, followed by solubilizing the unreacted monomer and removing the unreacted monomer together with the aqueous medium. According to this method, the amount of unreacted monomer present in a polymer can be efficiently and reliably decreased at low cost without requiring a special apparatus or thermal energy, etc. In addition, the toner resin of the present invention has for its constituent component a vinyl polymer in which the amount of unreacted monomer has been decreased by the method described above.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: September 30, 2003
    Assignee: Fujikura Kasei Co., Ltd.
    Inventors: Hikoji Ueda, Masamitsu Mogi, Masao Watanabe, Yutaka Kukimoto