Patents by Inventor Hirosuke Kawabata

Hirosuke Kawabata 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: 7847056
    Abstract: An object of the invention is to provide a fluorine-containing (meth)acrylate polymer readily at a low cost without using any special polymerization facilities. Thus, the invention provides a fluorine-containing (meth)acrylate polymer obtained by reacting a (meth)acrylate polymer with an alcohol containing a fluorine atom represented by General Formula 1: Rf(CH2)nOH??(1) wherein Rf is a fluoroalkyl group or a fluoroalkyl ether group of 1 to 15 carbon atoms containing at least one or more fluorine atoms and n is an integer of 0 to 10 as well as a method for producing the same.
    Type: Grant
    Filed: March 25, 2005
    Date of Patent: December 7, 2010
    Assignees: Kaneka Corporation
    Inventors: Etsuo Horii, Hirosuke Kawabata, Toshikazu Hirao, Akiya Ogawa, Xiaoliang Xu
  • Publication number: 20090227738
    Abstract: It is an object of the present invention to provide a resin composition whose birefringence has been controlled. The object can be attained by a resin composition composed essentially of a resin (A) containing glutarimide units and acrylic ester units and a resin (B) containing glutarimide units, acrylic ester units, and aromatic vinyl units. The resin composition of the present invention is easy to manufacture, inexpensive, excellent in terms of transparency and heat resistance, and easily controllable in terms of orientation birefringence. Further, the resin composition of the present invention can be developed to be applied to an optical molding product of which transparency and heat resistance are required.
    Type: Application
    Filed: May 26, 2006
    Publication date: September 10, 2009
    Inventors: Katsuyuki Tanaka, Hirosuke Kawabata, Tomoki Hiiro
  • Publication number: 20080318072
    Abstract: To realize an imide resin which is favorable in optical use. The imide resin according to the present invention includes: a repeating unit represented by General Formula (1); a repeating unit represented by General Formula (2); and a repeating unit represented by General Formula (3), wherein an orientation birefringence of the imide resin ranges from ?0.1×10?3 to 0.
    Type: Application
    Filed: December 1, 2004
    Publication date: December 25, 2008
    Applicant: Kaneka Corporation
    Inventors: Hirosuke Kawabata, Tomoki Hiiro, Yasuhiro Sekiguchi, Kazuhito Wada, Kimihide Nishimura, Norito Doi
  • Publication number: 20080004424
    Abstract: An object of the invention is to provide a fluorine-containing (meth)acrylate polymer readily at a low cost without using any special polymerization facilities. Thus, the invention provides a fluorine-containing (meth)acrylate polymer obtained by reacting a (meth)acrylate polymer with an alcohol containing a fluorine atom represented by General Formula 1: Rf(CH2)nOH??(1) wherein Rf is a fluoroalkyl group or a fluoroalkyl ether group of 1 to 15 carbon atoms containing at least one or more fluorine atoms and n is an integer of 0 to 10 as well as a method for producing the same.
    Type: Application
    Filed: March 25, 2005
    Publication date: January 3, 2008
    Applicants: KANEKA CORPORATION
    Inventors: Etsuo Horii, Hirosuke Kawabata, Toshikazu Hirao, Akiya Ogawa, Xiaoliang Xu
  • Patent number: 6964814
    Abstract: A film is provided which comprises a thermoplastic resin A having a substituted or non-substituted imide group at a side chain of the resin A, and a thermoplastic resin B having a substituted or non-substituted phenyl group and a nitrile group at a side chain of the resin B. The film has a retardation value of 0 to 1000 nm, a light transmission of 85% or more, and a haze of 2% or less.
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: November 15, 2005
    Assignee: Kaneka Corporation
    Inventors: Sadao Fujii, Toshihiko Hikida, Shigeru Tanaka, Hirosuke Kawabata, Hiroshi Awaji
  • Publication number: 20050096431
    Abstract: A film is provided which comprises a thermoplastic resin A having a substituted or non-substituted imide group at a side chain of the resin A, and a thermoplastic resin B having a substituted or non-substituted phenyl group and a nitrile group at a side chain of the resin B. The film has a retardation value of 0 to 1000 nm, a light transmission of 85% or more, and a haze of 2% or less.
    Type: Application
    Filed: December 8, 2004
    Publication date: May 5, 2005
    Inventors: Sadao Fujii, Toshihiko Hikida, Shigeru Tanaka, Hirosuke Kawabata, Hiroshi Awaji
  • Patent number: 6103837
    Abstract: The present invention relates to a siloxane random copolymer having a repeating unit represented by the following general formula (I) (II) and (III) at random and a resin composition containing the same. ##STR1## Further, the invention relates to a process of producing a siloxane copolymer comprising the step of reacting at least one polycarbonate and/or dicarbonate of diol and, if needed, at least one diester of dicarboxylic acid with at least one specified silicon compound in the presence of an esterifying or ester exchange catalyst.
    Type: Grant
    Filed: February 26, 1998
    Date of Patent: August 15, 2000
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Tomoki Hiiro, Hirosuke Kawabata, Katsuhiko Kimura, Haruo Tomita
  • Patent number: 5412114
    Abstract: The present invention relates to an improvement in the process for preparing a calixarene derivative in which the rotation of its benzene units are hindered and which comprises replacing all or a part of the hydrogen atoms of the hydroxyl groups of a calixarene derivative represented by the general formula: ##STR1## and is characterized by conducting the reaction in the presence of an alkaline earth metal. According to the present invention, an asymmetric calixarene derivative having a "cone" conformation can be selectively prepared by virtue of the template effect of the metal.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: May 2, 1995
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Seiji Shinkai, Tsutomu Matsuda, Takashi Arimura, Hirosuke Kawabata, Kozo Tachibana