Patents by Inventor Kazuhiro Maenou

Kazuhiro Maenou 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 and apparatus for alkaline saponification of polymer film
    Patent number: 7442789
    Abstract: The present invention provides a method for alkaline saponification of a polymer film, comprising the steps of: alkaline saponification of the polymer film with an alkaline solution; and washing away the alkaline solution from the alkali-saponified polymer film, wherein the washing step includes a plurality of water-washing steps of washing the alkaline solution coated on the polymer film away using washing water, along the travel direction of the polymer film, and the used washing water is reused in order to perform alkaline saponification of a polymer film which allow efficient use of washing water and realize low cost and low environmental load while maintaining quality stability.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: October 28, 2008
    Assignee: FUJIFILM Corporation
    Inventors: Kazuhiro Maenou, Yukihiro Maeda
  • Method and apparatus for alkaline saponification of polymer film
    Publication number: 20070148370
    Abstract: The present invention provides a method for alkaline saponification of a polymer film, comprising the steps of: alkaline saponification of the polymer film with an alkaline solution; and washing away the alkaline solution from the alkali-saponified polymer film, wherein the washing step includes a plurality of water-washing steps of washing the alkaline solution coated on the polymer film away using washing water, along the travel direction of the polymer film, and the used washing water is reused in order to perform alkaline saponification of a polymer film which allow efficient use of washing water and realize low cost and low environmental load while maintaining quality stability.
    Type: Application
    Filed: December 11, 2006
    Publication date: June 28, 2007
    Applicant: FUJIFILM Corporation
    Inventors: Kazuhiro Maenou, Yukihiro Maeda