Patents by Inventor Mayumi Fukumi

Mayumi Fukumi 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).

  • POROUS FILM AND SECONDARY BATTERY ELECTRODE
    Publication number: 20110091774
    Abstract: Provided is a porous film that can contribute to improving the cycle characteristics of an electric cell by improving binding characteristics, for a porous film provided on a surface of an electrode used in a secondary cell and the like. The porous film comprises a water-soluble polymer, an inorganic filler, and a water-insoluble particulate polymer including 0.5-40 mass % of a monomer unit having a hydrophilic group selected from the group consisting of carboxylic acid groups, hydroxyl groups, and sulfonate groups.
    Type: Application
    Filed: March 31, 2009
    Publication date: April 21, 2011
    Applicant: ZEON CORPORATION
    Inventors: Yasuhiro Wakizaka, Mayumi Fukumi