Patents by Inventor Toshiaki Kadota

Toshiaki Kadota 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).

  • Patent number: 7115699
    Abstract: Provided are a sulfonated polymer capable of high hot water resistance even if it has an increased amount of the sulfonic groups introduced therein, and a solid polymer electrolyte containing the sulfonated polymer that has high proton conductivity and excellent generating performance. The sulfonated polymer has repeating units represented by the formula (1?): wherein B's are each independently an oxygen or a sulfur atom, R1 to R3 may be the same or different and are selected from a hydrogen atom, a fluorine atom, a nitrile group and an alkyl group, n is an integer of 2 or greater, and Q is a structure represented by the formula (q): wherein A is independently a divalent atom or organic group or a direct bond, and R4 to R11 may be the same or different and are selected from a hydrogen atom, a fluorine atom, an alkyl group and an aromatic group.
    Type: Grant
    Filed: October 6, 2004
    Date of Patent: October 3, 2006
    Assignee: JSR Corporation
    Inventors: Yoshitaka Yamakawa, Makoto Higami, Toshiaki Kadota
  • Publication number: 20060216566
    Abstract: Disclosed is a polymer electrolyte having a protonic acid group that is excellent in thermal stability and dimensional stability. The polymer electrolyte includes copolymers having a sulfonic acid group which has a structure represented by the following formula: wherein X is a divalent electron-withdrawing group; Y is an oxygen or a sulfur; Z and Q are each a direct bond, —O—, —S—, —CO—, —SO2—, —[C(R?)2]g— (g: integer of from 1 to 8), etc.; R, R? and R1 to R16 are each a hydrogen, a fluorine, an alkyl, a fluorine-substituted alkyl, an aryl or a nitrile; m, n, p, q, r, s, t and u are each an integer of from 0 to 4 (with the proviso that p+q?1); and A is a group represented by Formula (5a) or (5b) below: wherein W is a divalent electron-withdrawing group; S is a protonic acid group; i is an integer of from 1 to 5; and j is an integer of from 1 to 7.
    Type: Application
    Filed: March 15, 2006
    Publication date: September 28, 2006
    Inventors: Yoshitaka Yamakawa, Toshihiro Ohtsuki, Kohei Goto, Toshiaki Kadota, Teruhiko Umehara, Nagayuki Kanaoka, Masaru Iguchi, Hiroshi Sohma
  • Publication number: 20050080220
    Abstract: Provided are a sulfonated polymer capable of high hot water resistance even if it has an increased amount of the sulfonic groups introduced therein, and a solid polymer electrolyte containing the sulfonated polymer that has high proton conductivity and excellent generating performance. The sulfonated polymer has repeating units represented by the formula (1?): wherein B's are each independently an oxygen or a sulfur atom, R1 to R3 may be the same or different and are selected from a hydrogen atom, a fluorine atom, a nitrile group and an alkyl group, n is an integer of 2 or greater, and Q is a structure represented by the formula (q): wherein A is independently a divalent atom or organic group or a direct bond, and R4 to R11 may be the same or different and are selected from a hydrogen atom, a fluorine atom, an alkyl group and an aromatic group.
    Type: Application
    Filed: October 6, 2004
    Publication date: April 14, 2005
    Applicant: JSR CORPORATION
    Inventors: Yoshitaka Yamakawa, Makoto Higami, Toshiaki Kadota
  • Publication number: 20040044166
    Abstract: Disclosed is an aromatic sulfonic acid ester derivative represented by the formula (1); 1
    Type: Application
    Filed: August 19, 2003
    Publication date: March 4, 2004
    Applicant: JSR Corporation
    Inventors: Igor Rozhanskii, Masayuki Takahashi, Kohei Goto, Yousuke Konno, Toshihiro Ohtsuki, Yoshitaka Yamakawa, Toshiaki Kadota
  • Patent number: 5173360
    Abstract: This invention relates to a fabric for inked ribbon characterized in that it is a fabric using multifilaments of a twist of 30 T/m or less for the warp and has the fiber orientation in said warp disturbed through high pressure liquid treatment and to its manufacturing method.The inked ribbon according to the present invention is applicable to the impact type serial dot printer, line printer and other printers and has very little hot spot produced and is distinguished in the ink absorption notwithstanding a very low twist of 30 T/m or less for the warp of the fabric.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: December 22, 1992
    Assignee: Toray Industries, Inc.
    Inventors: Nobutake Hiroe, Toshiaki Kadota, Tsuyoshi Hatakeda