Patents by Inventor Hiroaki Arita

Hiroaki Arita 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: 20130171440
    Abstract: A film sealant useful for tightly sealing an electric device at a low temperature and a sealing method of using the sealant are provided. The device is covered and sealed by covering at least a region of the device with a film sealant containing a copolyamide-series resin, heat-melting the sealant, and cooling the sealant. The copolyamide-series resin may have a melting point or softening point of 75 to 160° C. and may be a crystalline resin. The copolyamide-series resin may be a multiple copolymer or may contain a unit derived from a long-chain component having a C8-16alkylene group (e.g., a C9-17lactam and an aminoC9-17alkanecarboxylic acid). The film sealant may cover one side of the device.
    Type: Application
    Filed: September 21, 2011
    Publication date: July 4, 2013
    Applicant: DAICEL-EVONIK LTD.
    Inventors: Hiroaki Arita, Yoshiki Nakaie, Taiji Yamabe
  • Patent number: 8236427
    Abstract: A moistureproof cellulose ester film which has satisfactory optical performances, excellent moisture permeability, and excellent dimensional stability; and a protective film for polarizers which comprises the film. This moistureproof cellulose ester film comprises: a cellulose ester film and, deposited on at least one side thereof in the following order, one or more adhesion layers each having a carbon content in terms of atom number concentration of 1-40% and comprising an inorganic compound as the main component, one or more barrier layers each having a carbon content in terms of atom number concentration of 0.1% or lower, comprising silicon oxide as the main component, and having a film density of 2.16-2.60, and one or more protective layers each having a carbon content in terms of atom number concentration of 1-40% and comprising an inorganic compound as the main component. The total thickness of these deposit layers on one side is 1-100 nm.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: August 7, 2012
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Hiroaki Arita, Kazuhiro Fukuda, Koji Ozaki, Issei Suzuki
  • Patent number: 8173262
    Abstract: In a molded composite article, a resin member comprising a non-urethane thermoplastic resin and a resin member comprising a thermoplastic polyurethane resin are directly joined with each other. The non-urethane thermoplastic resin comprises at least one member selected from the group consisting of a polyamide component having an alicyclic ring and an amino group-containing compound, or each of the non-urethane thermoplastic resins and the thermoplastic polyurethane has a polyether segment. Even if the base resin is a non-urethane thermoplastic resin, the present invention provides a direct and firm bonding between the non-urethane thermoplastic resin member and the thermoplastic polyurethane resin member.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: May 8, 2012
    Assignee: Daicel-Evonik Ltd.
    Inventors: Mitsuteru Mutsuda, Hiroaki Arita, Hajime Komada, Toru Ikuta
  • Publication number: 20110300770
    Abstract: A gas barrier film comprising a resin substrate provided thereon at least one layer of a ceramic film, wherein the density ratio Y (=?f/?b) satisfies 1?Y?0.95 and the ceramic film has a residual stress being a compression stress of 0.01 MPa or more and 100 Mpa or less, wherein ?f is the density of the ceramic film and ?b is the density of a comparative ceramic film being formed by thermal oxidation or thermal nitridation of a metal as a mother material of the ceramic film so as to being the same composition ratio of the ceramic film.
    Type: Application
    Filed: August 19, 2011
    Publication date: December 8, 2011
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Kazuhiro FUKUDA, Chikao MAMIYA, Hiroaki ARITA
  • Patent number: 8062707
    Abstract: A gas barrier film comprising a resin substrate provided thereon at least one layer of a ceramic film, wherein the density ratio Y (=?f/?b) satisfies 1?Y?0.95 and the ceramic film has a residual stress being a compression stress of 0.01 MPa or more and 100 Mpa or less, wherein ?f is the density of the ceramic film and ?b is the density of a comparative ceramic film being formed by thermal oxidation or thermal nitridation of a metal as a mother material of the ceramic film so as to being the same composition ratio of the ceramic film.
    Type: Grant
    Filed: February 7, 2006
    Date of Patent: November 22, 2011
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Kazuhiro Fukuda, Chikao Mamiya, Hiroaki Arita
  • Patent number: 8029910
    Abstract: The present invention is directed to a composite comprising a resin element comprising a resin composition and a vulcanized rubber element formed by vulcanizing an unvulcanized rubber, wherein the resin composition comprises a resin, a vulcanization-activating agent for improving adhesiveness of the resin to a rubber, and a stabilizer, and the resin composition and the vulcanized rubber are directly joined together.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: October 4, 2011
    Assignee: Daicel-Evonik Ltd.
    Inventors: Toru Ikuta, Hajime Komada, Mitsuteru Mutsuda, Hiroaki Arita, Naoki Wakita
  • Patent number: 7989540
    Abstract: A resin composition comprises a resin, a vulcanization-activating agent, and a stabilizer. The vulcanization-activating agent may be a compound having a plurality of polymerizable unsaturated bonds (e.g., a compound having a plurality of (meth)acryloyl groups). The stabilizer may be an antioxidant, or a light stabilizer (particularly, a stabilizer is capable of capturing a radical). Use of the resin composition as a resin material ensures to directly join between a resin and a rubber certainly and firmly. The proportion of the vulcanization-activating agent may be about 0.1 to 10 parts by weight relative to 100 parts by weight of the resin. The proportion of the stabilizer may be about 0.01 to 5 parts by weight relative to 100 parts by weight of the resin. The present invention provides a resin composition excellent in adhesiveness to a rubber.
    Type: Grant
    Filed: September 12, 2003
    Date of Patent: August 2, 2011
    Assignee: Daicel-Evonik Ltd.
    Inventors: Toru Ikuta, Hajime Komada, Mitsuteru Mutsuda, Hiroaki Arita, Naoki Wakita
  • Publication number: 20100215964
    Abstract: A resin composition comprises a resin, a vulcanization-activating agent, and a stabilizer. The vulcanization-activating agent may be a compound having a plurality of polymerizable unsaturated bonds (e.g., a compound having a plurality of (meth)acryloyl groups). The stabilizer may be an antioxidant, or a light stabilizer (particularly, a stabilizer is capable of capturing a radical). Use of the resin composition as a resin material ensures to directly join between a resin and a rubber certainly and firmly. The proportion of the vulcanization-activating agent may be about 0.1 to 10 parts by weight relative to 100 parts by weight of the resin. The proportion of the stabilizer may be about 0.01 to 5 parts by weight relative to 100 parts by weight of the resin. The present invention provides a resin composition excellent in adhesiveness to a rubber.
    Type: Application
    Filed: May 4, 2010
    Publication date: August 26, 2010
    Inventors: Toru IKUTA, Hajime KOMADA, Mitsuteru MUTSUDA, Hiroaki ARITA, Naoki WAKITA
  • Patent number: 7740943
    Abstract: In a molded composite article formed by directly bonding a resin member comprising a polyamide-series resin to a resin member comprising a thermoplastic polyurethane-series resin, the polyamide-series resin comprises a polyamide block copolymer containing (A) a polyether segment having at least one terminal imino group. The polyamide-series resin may comprise a polyamide-series resin having a free amino group in a concentration of not less than about 10 mmol/kg. The molded composite article is producible, for example, by heating at least one of the polyamide-series resin and the thermoplastic polyurethane-series resin to bond the former to the latter. Thus obtained molded composite article is suitable for a member of a shoe and an industrial roll. In such a process, the polyamide-series resin member and the thermoplastic polyurethane-series resin member both of which are different in nature from each other can be directly and firmly bonded together.
    Type: Grant
    Filed: May 1, 2005
    Date of Patent: June 22, 2010
    Assignee: Daicel-Evonik Ltd.
    Inventors: Mitsuteru Mutsuda, Hiroaki Arita, Hajime Komada, Toru Ikuta
  • Patent number: 7645630
    Abstract: It is an object of the present invention to provide an organic thin-film transistor exhibiting high carrier mobility and a manufacturing method thereof. Disclosed is an organic thin-film transistor possessing a film having a contact angle against pure water of a surface of not less than 50°, wherein an organic semiconductor layer is formed on the film prepared by a CVD (chemical vapor deposition) method employing a reactive gas.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: January 12, 2010
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Katsura Hirai, Hiroshi Kita, Hiroaki Arita
  • Publication number: 20090267489
    Abstract: Disclosed is a gas-barrier thin film laminate which can be produced with high yield while having higher gas barrier properties than the conventional ones. The gas barrier properties of this gas-barrier thin film laminate do not deteriorate even when the laminate is bent. Also disclosed is an organic EL device (hereinafter also referred to as OLED) with excellent environmental resistance which uses the gas-barrier thin film laminate. The gas-barrier thin film laminate having at least one inorganic film and at least one stress relaxation film is characterized in that at least one stress relaxation film is formed by an atmospheric pressure plasma method wherein two or more electric fields of different frequencies are applied.
    Type: Application
    Filed: December 6, 2005
    Publication date: October 29, 2009
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Hiroaki Arita, Kazuhiro Fukuda
  • Publication number: 20090252893
    Abstract: Provide is a method of preparing a highly-functional film capable of reducing surface failure and of improving the yield, and a manufacturing apparatus thereof. This is a plasma discharge treatment apparatus to plasma-discharge-treat for the surface of a substrate conveyed between a winder and an unwinder at atmospheric pressure or approximately atmospheric pressure, and is a plasma discharge treatment apparatus by which the substrate is conveyed with no contact by only nip roller separating the discharge section from outside. Provided is a method of preparing a gas barrier film exhibiting high gas barrier, together with reduction of surface failure (crack failure) during gas barrier thin layer formation. The surface on the gas barrier thin layer side of the gas barrier film has a curvature radius of at least 75 mm during conveyance, and the surface on the opposite side has a curvature radius of at least 37.5 mm.
    Type: Application
    Filed: August 17, 2006
    Publication date: October 8, 2009
    Inventors: Koji Ozaki, Kazuhiro Fukuda, Hiroaki Arita
  • Publication number: 20090167164
    Abstract: Disclosed is a gas barrier film which uses a polymerizable inorganic compound and has both high barrier property and high surface smoothness. Also disclosed are a resin base for organic electroluminescent devices using such a gas barrier film, an organic electroluminescent device and a method for producing a gas barrier film. The gas barrier film is characterized by comprising at least one ceramic film and a coating layer, which is formed through application of a coating liquid containing a polymerizable inorganic compound, on a resin film in this order. The gas barrier film is further characterized in that the ceramic film has a residual stress of not less than 0.01 MPa but not more than 20 MPa.
    Type: Application
    Filed: April 6, 2007
    Publication date: July 2, 2009
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Kazuhiro Fukuda, Koji Ozaki, Hiromoto Ii, Hiroaki Arita, Issei Suzuki
  • Patent number: 7534494
    Abstract: In a molded composite article formed by directly joining a resin member comprising a polyamide-series resin to a resin member comprising a thermoplastic polyurethane-series resin, as the polyamide-series resin, a polyamide-series resin having an amino group of not less than 10 mmol/kg is used. The molded composite article may be produced by heating at least any one of the polyamide-series resin and the thermoplastic polyurethane-series resin to join to the other resin.
    Type: Grant
    Filed: December 1, 2003
    Date of Patent: May 19, 2009
    Assignee: Daicel-Evonik Ltd.
    Inventors: Naoki Wakita, Mitsuteru Mutsuda, Hiroaki Arita, Hajime Komada, Toru Ikuta
  • Publication number: 20090109536
    Abstract: The present invention provides a plastic optical element with excellent durability and an optical pickup device with excellent pickup property. The plastic optical element is an plastic optical element with a gas barrier film comprising a resin substrate and provided thereon, at least one ceramic layer, the residual stress of the ceramic layer being from 0.01 to 100 MPa in terms of compression stress, and a density ratio Y (=?f/?b) satisfying the following inequality: 1?Y>0.95 wherein ?f represents a density of the ceramic layer, and ?b represents a density of a layer which has the same composition ratio as the ceramic layer and which has been formed by thermal oxidation or thermal nitridation of a metal which is a base material of the ceramic layer.
    Type: Application
    Filed: May 28, 2007
    Publication date: April 30, 2009
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Kazuhiro Fukuda, Hiroaki Arita
  • Publication number: 20090051272
    Abstract: A gas barrier film comprising a resin substrate provided thereon at least one layer of a ceramic film, wherein the density ratio Y (=?f/?b) satisfies 1?Y?0.95 and the ceramic film has a residual stress being a compression stress of 0.01 MPa or more and 100 Mpa or less, wherein ?f is the density of the ceramic film and ?b is the density of a comparative ceramic film being formed by thermal oxidation or thermal nitridation of a metal as a mother material of the ceramic film so as to being the same composition ratio of the ceramic film.
    Type: Application
    Filed: February 7, 2006
    Publication date: February 26, 2009
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Kazuhiro Fukuda, Chikao Mamiya, Hiroaki Arita
  • Publication number: 20090053526
    Abstract: A gas barrier laminate comprising a substrate having thereon at least a gas barrier layer and a polymer layer, wherein at least one polymer layer is provided adjacent to at least one gas barrier layer; and an average carbon content of the polymer layer at a contact interface between the gas barrier layer is lower than an average carbon content in the polymer layer.
    Type: Application
    Filed: August 30, 2005
    Publication date: February 26, 2009
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Hiroaki Arita, Toshio Tsuji, Chikao Mamiya, Kazuhiro Fukuda
  • Publication number: 20090053496
    Abstract: A moistureproof cellulose ester film which has satisfactory optical performances, excellent moisture permeability, and excellent dimensional stability; and a protective film for polarizers which comprises the film. This moistureproof cellulose ester film comprises: a cellulose ester film and, deposited on at least one side thereof in the following order, one or more adhesion layers each having a carbon content in terms of atom number concentration of 1-40% and comprising an inorganic compound as the main component, one or more barrier layers each having a carbon content in terms of atom number concentration of 0.1% or lower, comprising silicon oxide as the main component, and having a film density of 2.16-2.60, and one or more protective layers each having a carbon content in terms of atom number concentration of 1-40% and comprising an inorganic compound as the main component. The total thickness of these deposit layers on one side is 1-100 nm.
    Type: Application
    Filed: December 27, 2006
    Publication date: February 26, 2009
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Hiroaki Arita, Kazuhiro Fukuda, Koji Ozaki, Issei Suzuki
  • Publication number: 20080085418
    Abstract: A transparent gas barrier film comprising a substrate having thereon a gas barrier layer comprising at least a low density layer and a high density layer, wherein one or more intermediate density layers are sandwiched between the low density layer and the high density layer.
    Type: Application
    Filed: September 7, 2005
    Publication date: April 10, 2008
    Inventors: Kazuhiro Fukuda, Toshio Tsuji, Chikao Mamiya, Hiroaki Arita
  • Publication number: 20070292703
    Abstract: A resin composition comprises a resin, a vulcanization-activating agent, and a stabilizer. The vulcanization-activating agent may be a compound having a plurality of polymerizable unsaturated bonds (e.g., a compound having a plurality of (meth)acryloyl groups). The stabilizer may be an antioxidant, or a light stabilizer (particularly, a stabilizer is capable of capturing a radical). Use of the resin composition as a resin material ensures to directly join between a resin and a rubber certainly and firmly. The proportion of the vulcanization-activating agent may be about 0.1 to 10 parts by weight relative to 100 parts by weight of the resin. The proportion of the stabilizer may be about 0.01 to 5 parts by weight relative to 100 parts by weight of the resin. The present invention provides a resin composition excellent in adhesiveness to a rubber.
    Type: Application
    Filed: September 12, 2003
    Publication date: December 20, 2007
    Applicant: DAICEL-DEGUSSA LTD.
    Inventors: Toru Ikuta, Hajime Komada, Mitsuteru Mutsuda, Hiroaki Arita, Naoki Wakita