Patents by Inventor Kazuhige Yamamoto

Kazuhige Yamamoto 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).

  • Publication number: 20070184340
    Abstract: The invention provides an adhesive-carrying porous film for use as a battery separator, which comprises: a substrate porous film such that when a probe of a probe penetrating thermomechanical analyzer, said probe having a diameter of 1 mm, is placed on the porous film under a load of 70 g to measure a thickness thereof while heating the porous film from room temperature at a rate of 2° C./minute, a temperature at which the thickness of the porous film decreases to a half of the thickness of the porous film when the probe was initially placed thereon is 200° C. or more; and a partially crosslinked adhesive carried on the substrate porous film, the partially crosslinked adhesive being prepared by reacting a reactive polymer having a functional group capable of reacting with an isocyanate group therein with a polyfunctional isocyanate so that the reactive polymer is partially crosslinked. Such a porous film (a separator) is temporarily bonded to an electrode to provide an electrode/separator laminate.
    Type: Application
    Filed: April 1, 2004
    Publication date: August 9, 2007
    Inventors: Tomoaki Ichikawa, Keisuke Kii, Yoshihiro Uetani, Kazuhige Yamamoto, Michio Satsuma, Mutsuko Yamaguchi