Patents by Inventor Katsuaki Kuze

Katsuaki Kuze 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: 8979330
    Abstract: An anisotropic light-diffusing film, an anisotropic light-diffusing laminate, and an anisotropic light-reflecting laminate are provided which are excellent in both light transmittance and diffusivity. Also provided are a lighting equipment and a display device which employ any of the film and laminates and are excellent in light-diffusivity and brightness and in economy, etc. The anisotropic light-diffusing film is a film formed by melt-extruding a mixture of at least two thermoplastic resins incompatible with each other. The film has parallel light ray transmittance of 20-85%, haze of 10-80%, glossiness of 10-70%, and ratio of the vertical-direction diffusivity to the horizontal-direction diffusivity of transmitted light of 1.3-6.0. The anisotropic light-reflecting laminate comprises a light reflector and the anisotropic light-diffusing film laminated over at least one surface of the reflector.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: March 17, 2015
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Katsuaki Kuze, Kenji Kawai
  • Patent number: 8736792
    Abstract: To provide a viewing-angle-enhancing film which is set in a liquid crystal display device at a position nearer to an observer than the position of a liquid crystal layer in the device, and which attains, at a high level, the compatibility of being enhanced in viewing angle with a decrease in the darkening of images at the time of observing the screen from the front thereof. A viewing-angle-enhancing film which is set in a liquid crystal display device at a position nearer to an observer than the position of a liquid crystal layer in the device, and simultaneously satisfies the following requirements (1) to (3): (1) the film has a parallel ray transmittance of 5 to 90%; (2) the film has a diffusivity (A) of 1 to 20 degrees in its main diffusion direction; and (3) the film has a diffusivity ratio of 0.25 to 15% in the main diffusion direction.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: May 27, 2014
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Katsuaki Kuze, Kenji Kawai, Kazumoto Imai, Akihumi Yasui, Akira Matsuda, Masao Kochi
  • Publication number: 20120176573
    Abstract: To provide a viewing-angle-enhancing film which is set in a liquid crystal display device at a position nearer to an observer than the position of a liquid crystal layer in the device, and which attains, at a high level, the compatibility of being enhanced in viewing angle with a decrease in the darkening of images at the time of observing the screen from the front thereof. A viewing-angle-enhancing film which is set in a liquid crystal display device at a position nearer to an observer than the position of a liquid crystal layer in the device, and simultaneously satisfies the following requirements (1) to (3): (1) the film has a parallel ray transmittance of 5 to 90%; (2) the film has a diffusivity (A) of 1 to 20 degrees in its main diffusion direction; and (3) the film has a diffusivity ratio of 0.25 to 15% in the main diffusion direction.
    Type: Application
    Filed: October 13, 2010
    Publication date: July 12, 2012
    Applicant: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Katsuaki Kuze, Kenji Kawai, Kazumoto Imai, Akihumi Yasui, Akira Matsuda, Masao Kochi
  • Patent number: 8030417
    Abstract: The present invention is a process for producing a polyester-polycarbonate type thermoplastic polyester elastomer in which a hard segment consisting of a polyester constructed of aromatic dicarboxylic acid, and an aliphatic or alicyclic diol, and a soft segment consisting mainly of aliphatic polycarbonate are connected, comprising at least a step of increasing the molecular weight of an aliphatic polycarbonate diol by a reaction of an aliphatic polycarbonate diol and a chain extender, and a step of reacting aliphatic polycarbonate and a polyester constructed of aromatic dicarboxylic acid and an aliphatic or alicyclic diol in the molten state.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: October 4, 2011
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Gaku Maruyama, Kenta Susuki, Katsuaki Kuze, Shigeo Ukyo, Shoji Koketsu
  • Patent number: 7973124
    Abstract: The present invention provides a thermoplastic polyester elastomer excellent in heat resistance, heat-aging resistance, water resistance, light resistance, low-temperature property and the like, and further excellent in block order-retaining ability, the thermoplastic polyester elastomer comprising a hard segment which comprises polyester constituted with aromatic dicarboxylic acid and aliphatic or alicyclic diol and a soft segment which comprises mainly aliphatic polycarbonate, wherein the hard segment and the soft segment being connected, and wherein when melting points of the thermoplastic polyester elastomer are obtained by measuring on a differential scanning calorimeter in three cycles in which a temperature is raised from room temperature to 300° C. at a heating rate of 20° C./min., maintained at 300° C. for 3 minutes and lowered to room temperature at a cooling rate of 100° C./min.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: July 5, 2011
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Gaku Maruyama, Shoji Koketsu, Kenta Susuki, Katsuaki Kuze, Shigeo Ukyo
  • Publication number: 20110128628
    Abstract: An anisotropic light-diffusing film, an anisotropic light-diffusing laminate, and an anisotropic light-reflecting laminate are provided which are excellent in both light transmittance and diffusivity. Also provided are a lighting equipment and a display device which employ any of the film and laminates and are excellent in light-diffusivity and brightness and in economy, etc. The anisotropic light-diffusing film is a film formed by melt-extruding a mixture of at least two thermoplastic resins incompatible with each other. The film has parallel light ray transmittance of 20-85%, haze of 10-80%, glossiness of 10-70%, and ratio of the vertical-direction diffusivity to the horizontal-direction diffusivity of transmitted light of 1.3-6.0. The anisotropic light-reflecting laminate comprises a light reflector and the anisotropic light-diffusing film laminated over at least one surface of the reflector.
    Type: Application
    Filed: August 6, 2009
    Publication date: June 2, 2011
    Applicant: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Katsuaki Kuze, Kenji Kawai
  • Patent number: 7922007
    Abstract: The present invention relates to a permselective separation membrane that can be used in blood purifying treatment. More particularly, the present invention relates to a polysulfone-based permselective separation membrane which has well-balanced separation properties, highly stable safety and performance, and also can be smoothly assembled into a module, and a method for producing the same.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: April 12, 2011
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Kimihiro Mabuchi, Hideyuki Yokota, Katsuaki Kuze, Noriyuki Tamamura, Makoto Ono, Noriko Monden, Noriaki Kato, Hiroshi Shibano, Katsuhiko Nose
  • Publication number: 20100041858
    Abstract: The present invention is a process for producing a polyester-polycarbonate type thermoplastic polyester elastomer in which a hard segment consisting of a polyester constructed of aromatic dicarboxylic acid, and an aliphatic or alicyclic diol, and a soft segment consisting mainly of aliphatic polycarbonate are connected, comprising at least a step of increasing the molecular weight of an aliphatic polycarbonate diol by a reaction of an aliphatic polycarbonate diol and a chain extender, and a step of reacting aliphatic polycarbonate and a polyester constructed of aromatic dicarboxylic acid and an aliphatic or alicyclic diol in the molten state.
    Type: Application
    Filed: January 23, 2009
    Publication date: February 18, 2010
    Applicant: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Gaku Maruyama, Kenta Susuki, Katsuaki Kuze, Shigeo Ukyo, Shoji Koketsu
  • Publication number: 20090272686
    Abstract: [Purpose] To provide a blood purifier which has high levels of blood compatibility, performance-retaining property when in contact with blood, and safety, and which shows an excellent water permeability-exhibiting rate after a priming treatment and has high reliability in long-term storage.
    Type: Application
    Filed: April 3, 2006
    Publication date: November 5, 2009
    Applicant: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Kimihiro Mabuchi, Hideyuki Yokota, Katsuaki Kuze, Noriko Monden, Noriaki Kato, Makoto Ohno, Mitsuru Suzuki
  • Publication number: 20090203871
    Abstract: The present invention provides a thermoplastic polyester elastomer excellent in heat resistance, heat-aging resistance, water resistance, light resistance, low-temperature property and the like, and further excellent in block order-retaining ability, the thermoplastic polyester elastomer comprising a hard segment which comprises polyester constituted with aromatic dicarboxylic acid and aliphatic or alicyclic diol and a soft segment which comprises mainly aliphatic polycarbonate, wherein the hard segment and the soft segment being connected, and wherein when melting points of the thermoplastic polyester elastomer are obtained by measuring on a differential scanning calorimeter in three cycles in which a temperature is raised from room temperature to 300° C. at a heating rate of 20° C./min., maintained at 300° C. for 3 minutes and lowered to room temperature at a cooling rate of 100° C./min.
    Type: Application
    Filed: December 15, 2006
    Publication date: August 13, 2009
    Applicant: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Gaku Maruyama, Shoji Koketsu, Kenta Susuki, Katsuaki Kuze, Shigeo Ukyo
  • Publication number: 20090082529
    Abstract: Disclosed is a polyester produced from an aluminum compound and a phosphorus compound in the presence of a polycondensation catalyst. The polyester contains a polyester-insoluble, aluminum-containing insoluble particle in an amount of 1000 ppm or less as quantified by the method disclosed in the description, and contains an acid terminal group at a ratio of 10 to 50 eq/ton. The polyester can provide a highly transparent molded article produced through drawing (e.g., a film or hollow molded article) and is useful in the fields of highly transparent optical films, ultra-highly transparent molded articles or the like.
    Type: Application
    Filed: September 12, 2006
    Publication date: March 26, 2009
    Inventors: Katsuhiko Kageyama, Haruo Matsumoto, Katsuaki Kuze, Gaku Maruyama
  • Patent number: 7442302
    Abstract: The present invention provides a highly water permeable hollow fiber membrane type blood purifier for medical use, which is excellent in safety and module-assembling ease and which has a high water permeability suitable for use in therapy of chronic renal failure. The present invention relates to a highly water-permeable hollow fiber type blood purifier comprising hydrophobic polymer hollow fiber membranes each of which contains a hydrophilic polymer, characterized in that the amount of the hydrophilic polymer eluted from the hollow fiber membrane is 10 ppm or less; in that the ratio of the hydrophilic polymer in the outer surface of the hollow fiber membrane is 25 to 50 mass %; in that the burst pressure of the hollow fiber membrane is 0.5 MPa or higher; and in that the coefficient of water permeability of the blood purifier is 150 ml/m2/hr./mmHg or higher.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: October 28, 2008
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Kimihiro Mabuchi, Noriyuki Tamamura, Hidehiko Sakurai, Noriko Monden, Shinya Koyama, Hiroshi Shibano, Katsuaki Kuze, Katsuhiko Nose
  • Publication number: 20070199891
    Abstract: The present invention relates to a permselective separation membrane that can be used in blood purifying treatment. More particularly, the present invention relates to a polysulfone-based permselective separation membrane which has well-balanced separation properties, highly stable safety and performance, and also can be smoothly assembled into a module, and a method for producing the same.
    Type: Application
    Filed: March 18, 2005
    Publication date: August 30, 2007
    Inventors: Kimihiro Mabuchi, Hideyuki Yokota, Katsuaki Kuze, Noriyuki Tamamura, Makoto Ono, Noriko Monden, Noriaki Kato, Hiroshi Shibano, Katsuhiko Nose
  • Publication number: 20070187320
    Abstract: The present invention relates to a polysulfone permselective hollow fiber membrane bundle which has high safety and high reliability in performance and which is particularly suitable for use in a blood purifier or the like, a process for manufacturing the same, and a blood purifier comprising the same.
    Type: Application
    Filed: March 22, 2005
    Publication date: August 16, 2007
    Inventors: Kimihiro Mabuchi, Hideyuki Yokota, Katsuaki Kuze, Noriyuki Tamamura, Makoto Ono, Noriko Monden, Noriaki Kato, Hiroshi Shibano, Katsuhiko Nose
  • Publication number: 20060191844
    Abstract: The present invention provides a highly water permeable hollow fiber membrane type blood purifier for medical use, which is excellent in safety and module-assembling ease and which has a high water permeability suitable for use in therapy of chronic renal failure. The present invention relates to a highly water-permeable hollow fiber type blood purifier comprising hydrophobic polymer hollow fiber membranes each of which contains a hydrophilic polymer, characterized in that the amount of the hydrophilic polymer eluted from the hollow fiber membrane is 10 ppm or less; in that the ratio of the hydrophilic polymer in the outer surface of the hollow fiber membrane is 25 to 50 mass %; in that the burst pressure of the hollow fiber membrane is 0.5 MPa or higher; and in that the coefficient of water permeability of the blood purifier is 150 ml/m2/hr./mmHg or higher.
    Type: Application
    Filed: August 26, 2004
    Publication date: August 31, 2006
    Inventors: Kimihiro Mahuchi, Noriyuki Tamamura, Hidehiko Sakurai, Noriko Monden, Shinya Koyama, Hiroshi Shibano, Katsuaki Kuze, Katsuhiko Nose
  • Patent number: 5922424
    Abstract: A laminating film for a metal sheet, which comprises a thermoplastic resin and which is free of a pinhole having a diameter of not less than 0.1 mm .phi. at least in the portion laminated on the metal sheet, a metal sheet prepared by laminating this film, and a metal container formed from this metal sheet. The film of the present invention is superior in corrosion resistance, flavor resistance and printability. Hence, the metal sheet and metal container of the present invention have beautiful appearance and high food protection effect.
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: July 13, 1999
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Hideki Igushi, Hiroshi Nagano, Katsuaki Kuze, Tsutomu Isaka
  • Patent number: 5817425
    Abstract: A layered polyamide film includes a polyamide substrate; and an adhesiveness-improving layer provided on at least one surface of the polyamide substrate. The adhesiveness-improving layer includes a graft copolymer of a polyester and an acrylic polymer. Another layered polyamide film includes a printing ink layer, an adhesive layer, and a sealant layer sequentially laminated on the adhesiveness-improving layer. A method for producing such a layered polyamide film includes the step of applying an aqueous dispersion of the graft copolymer of the polyester and the acrylic polymer to at least one surface of the polyamide substrate to form an adhesiveness-improving layer and, if necessary, laminating a printing ink layer, an adhesive layer, and a sealant layer on adhesiveness-improving layer.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: October 6, 1998
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Chikao Morishige, Yoshinori Nakae, Mitsuru Kuwahara, Shinya Higashiura, Masashi Oki, Toshiaki Takeuchi, Katsuaki Kuze
  • Patent number: 5658626
    Abstract: A polyester film having a coefficient of dynamic friction between the film and a metal at 80.degree. C. of not more than 0.45, a polyester film composed of a polyester comprising an ethylene terephthalate unit in a proportion of 70% or more by mole, the polyester film comprising a cyclic ethylene terephthalate trimer in a proportion of 0.7% or less by weight, laminated metal sheets and metal containers manufactured from said laminated metal sheet. According to the present invention, the polyester film shows superior sliding property and superior scratch resistance during can production, as well as the elution of oligomer from the film can be suppressed, so that when the film is used for metal containers for food, the change in and smell of the food contained therein and degraded appearance of the surface of the film caused by the deposition of oligomer are avoided.
    Type: Grant
    Filed: December 8, 1995
    Date of Patent: August 19, 1997
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Katsuaki Kuze, Hiroshi Nagano, Saburoh Ohta, Kuniharu Mori, Tsutomu Isaka
  • Patent number: 5498454
    Abstract: A polyester film having a coefficient of dynamic friction between the film and a metal at 80.degree. C. of not more than 0.45, a polyester film composed of a polyester comprising an ethylene terephthalate unit in a proportion of 70% or more by mole, the polyester film comprising a cyclic ethylene terephthalate trimer in a proportion of 0.7% or less by weight, laminated metal sheets and metal containers manufactured from said laminated metal sheet. According to the present invention, the polyester film shows superior sliding property and superior scratch resistance during can production, as well as the elution of oligomer from the film can be suppressed, so that when the film is used for metal containers for food, the change in taste and smell of the food contained therein and degraded appearance of the surface of the film caused by the deposition of oligomer are avoided.
    Type: Grant
    Filed: August 10, 1994
    Date of Patent: March 12, 1996
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Katsuaki Kuze, Hiroshi Nagano, Saburoh Ohta, Kuniharu Mori, Tsutomu Isaka
  • Patent number: 5458965
    Abstract: A polyester laminated film with excellent sealing ability is provided. The polyester laminated film comprises a base film of a polyester resin and a sealing film of a polyester composition, said sealing film being disposed on at least one side of said base film, wherein the sealing energy, which is measured when two pieces of said laminated films are joined together with the respective sealing films facing each other, is 300 g.cm/15 mm or more.
    Type: Grant
    Filed: September 2, 1993
    Date of Patent: October 17, 1995
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Yasuo Yoshinaka, Katsuhiko Nose, Yoshinori Takegawa, Norimi Tabota, Akito Hamano, Katsuaki Kuze