Patents by Inventor Kazuo Yamamura

Kazuo Yamamura 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: 8013049
    Abstract: The present invention discloses a production method of core-shell type highly liquid absorbent resin particles comprising: (1) a first step in which a particle core portion is formed by suspension polymerizing an aqueous solution (e) containing (meth)acrylic acid, a crosslinking agent (c) and an anionic surfactant (d) in a hydrophobic organic solvent (a) containing a nonionic surfactant (b), and (2) a second step in which a shell portion that covers the particle core portion is formed by suspension polymerizing an aqueous solution (g) containing a water-soluble vinyl polymer (f), having carboxyl groups and polymerizable unsaturated double bonds and having a number average molecular weight of 500 to 10000, in a suspension obtained in the first step.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: September 6, 2011
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Hisakazu Tanaka, Kazuo Yamamura, Yoshiki Hasegawa, Masayuki Kamei
  • Publication number: 20070276061
    Abstract: The present invention discloses a production method of core-shell type highly liquid absorbent resin particles comprising: (1) a first step in which a particle core portion is formed by suspension polymerizing an aqueous solution (e) containing (meth)acrylic acid, a crosslinking agent (c) and an anionic surfactant (d) in a hydrophobic organic solvent (a) containing a nonionic surfactant (b), and (2) a second step in which a shell portion that covers the particle core portion is formed by suspension polymerizing an aqueous solution (g) containing a water-soluble vinyl polymer (f), having carboxyl groups and polymerizable unsaturated double bonds and having a number average molecular weight of 500 to 10000, in a suspension obtained in the first step.
    Type: Application
    Filed: January 21, 2005
    Publication date: November 29, 2007
    Inventors: Hisakazu Tanaka, Kazuo Yamamura, Yoshiki Hasegawa, Masayuki Kamei
  • Publication number: 20070149755
    Abstract: This thermosetting powder coating composition is a thermosetting powder coating composition which contains a coating forming component which can crosslink and harden by an ester exchange reaction between a carboxylic ester group and a hydroxyl group, and an ester exchange reaction catalyst, in which the ester exchange reaction catalyst is constituted from an organic sulfonate (X) derived from a carboxylic amide and an organic sulfonic acid having fluorine atoms.
    Type: Application
    Filed: December 14, 2004
    Publication date: June 28, 2007
    Applicant: Dainippon Ink and Chemicals Inc.
    Inventors: Yutaka Furuya, Koichi Yamaguchi, Tetsuro Agawa, Kazuo Yamamura
  • Patent number: 6152087
    Abstract: A boiler tube protector having a cylindrical or semi-cylindrical shape and adapted to be attached around an outer peripheral face of a boiler tube with mortar, which boiler tube protector includes a plurality of ceramic bodies closely arranged along their parting planes, wherein the parting planes includes a restraining portion for restraining slippage of each of the ceramic bodies.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: November 28, 2000
    Assignee: NGK Insulators, Ltd.
    Inventors: Toshio Shibata, Shigeo Ito, Kazuhiro Mizuno, Yasuhiro Terashima, Yuji Nakagawa, Keita Inoue, Norihiko Orita, Tetsuo Takahashi, Kazuo Yamamura
  • Patent number: 6136117
    Abstract: A method of attaching a boiler tube protectors having a cylindrical or semi-cylindrical shape around an outer peripheral face of a boiler tube with mortar, which boiler tube protectors, are a plurality of ceramic bodies closely arranged along their parting planes, wherein the parting planes includes means for restraining slippage of each of the ceramic bodies along the parting planes.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: October 24, 2000
    Assignee: NGK Insulators, Ltd. and Mitsubishi Heavy Industries, Ltd.
    Inventors: Toshio Shibata, Shigeo Ito, Kazuhiro Mizuno, Yasuhiro Terashima, Yuji Nakagawa, Keita Inoue, Norihiko Orita, Tetsuo Takahashi, Kazuo Yamamura
  • Patent number: 5576406
    Abstract: It is an objective of the present invention to provide, in particular, a curable composition of an extremely high utility which yields a cured film having excellent acid resistance and the like. The curable composition of the present invention is used mainly for paints, adhesives, or sealing agents. The curable composition is based on crosslinking reaction between a specific substituted methyl ester group exemplified by an alkoxymethyl ester group and other functional groups, i.e., an epoxy group and an active hydrogen-containing group such as a hydroxyl group, a carbamate group, and an acetoacetoxy group.
    Type: Grant
    Filed: December 15, 1994
    Date of Patent: November 19, 1996
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Kazuo Yamamura, Masataka Ooka
  • Patent number: 4169079
    Abstract: A cyclodextrin derivative-containing a polystyrene based polymer containing units of structure having the formula: ##STR1## (wherein m is an integer of 1 to 10; n is 4, 5 or 6; R.sub.1 and R.sub.2 are hydrogen or alkyl groups containing 1 to 3 carbon atoms; and Z is an alkylene group containing 1 to 5 carbon atoms); a metal complex of the polystyrene based polymer; and a process for the production of the polystyrene based polymer or metal complex thereof.
    Type: Grant
    Filed: April 24, 1978
    Date of Patent: September 25, 1979
    Assignee: Iwao Tabushi
    Inventors: Iwao Tabushi, Nobuaki Shimizu, Kazuo Yamamura