Patents by Inventor Itsuhiro Hatanaka

Itsuhiro Hatanaka 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: 20130302590
    Abstract: The invention has an object to provide a foam laminate with excellent repeelability for electric or electronic devices. A foam laminate for electric or electronic devices of the invention has, on at least one side of a foam layer, a polyolefin-based pressure-sensitive adhesive layer containing a polyolefin, in which the polyolefin-based pressure-sensitive adhesive layer has a 180° peelability from an acrylic plate (tension rate: 0.3 m/min) of from 0.1 N/20 mm to 2.5 N/20 mm. The polyolefin-based pressure-sensitive adhesive layer is preferably a pressure-sensitive adhesive layer containing a polyolefin A having a crystal melting energy of less than 50 J/g, or a pressure-sensitive adhesive layer containing the polyolefin A and a polyolefin B having a crystal melting energy of 50 J/g or more in which a proportion of the polyolefin B is from 3 to 30% by weight with respect to a total polyolefin amount (100% by weight).
    Type: Application
    Filed: January 16, 2012
    Publication date: November 14, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Itsuhiro Hatanaka, Naomi Watanabe
  • Publication number: 20130251979
    Abstract: There is provided a resin foam excellent in dustproof performance, particularly dustproof performance in a dynamic environment. The resin foam of the present invention has a thickness recovery ratio of 65% or more, wherein the thickness recovery ratio is defined as a ratio of a thickness 1 second after releasing a compressed state to an initial thickness, when the resin foam is compressed for 1 minute in the thickness direction so as to give a thickness equal to 20% of the initial thickness in a 23° C. atmosphere; and then the compressed state is released in a 23° C. atmosphere.
    Type: Application
    Filed: November 29, 2011
    Publication date: September 26, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Makoto Saitou, Itsuhiro Hatanaka, Kazumichi Kato, Kiyoaki Kodama
  • Patent number: 8501310
    Abstract: To be provided is a foam waterproofing material superior in waterproofness and flexible enough to be compatible with further minute clearance. The foam waterproofing material according to the present invention is a waterproofing material including a foam having a thickness of 0.1 to 1.0 mm, characterized in that the foam has a micro cell structure with an average cell diameter of 10 to 60 ?m and an apparent density of 0.01 to 0.050 g/cm3. In the foam waterproofing material, the repulsive load when compressed to 0.1 mm (0.1 mm-compressive repulsion force) of the foam is preferably 0.01 to 0.1 MPa. The foam preferably has a closed-cell structure or a semi-open and semi-closed-cell structure. In addition, the foam may have a pressure-sensitive adhesive layer on one or both faces thereof. The pressure-sensitive adhesive layer is preferably formed on the foam via a film layer.
    Type: Grant
    Filed: February 16, 2009
    Date of Patent: August 6, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Hiroki Fujii, Kazumichi Kato, Itsuhiro Hatanaka
  • Publication number: 20130079430
    Abstract: The present invention relates to a resin composition for a polyolefin resin foam, including: a polyolefin (A) having a melt flow rate (MFR) at a temperature of 230° C. of 0.2 to 0.7 g/10 min and a melt tension at break measured at a temperature of 190° C. of 30 cN or more; and a polyolefin (B) having a melt flow rate (MFR) at a temperature of 230° C. of 1.5 to 10 g/10 min and a melt tension at break measured at a temperature of 190° C. of 10 cN or more, in which the polyolefin (B) is contained in an amount of from 15 to 75 parts by weight based on 100 parts by weight of the polyolefin (A).
    Type: Application
    Filed: July 27, 2012
    Publication date: March 28, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Naomi JINTOKU, Itsuhiro HATANAKA, Tetsurou KOBAYASHI
  • Publication number: 20130017391
    Abstract: There is provided a resin foam excellent in dustproofness and assemblability. The resin foam has a repulsive stress at 80% compression (repulsive stress when a resin foam is compressed by 80% of the initial thickness) of 1.0 to 9.0 N/cm2 and a tensile modulus of elasticity of 5.0 to 14.0 MPa. Preferably, the resin foam further has an average cell diameter of 10 to 180 ?m and an apparent density of 0.01 to 0.10 g/cm3.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 17, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kazumichi KATO, Makoto SAITOU, Itsuhiro HATANAKA, Kiyoaki KODAMA
  • Publication number: 20130011657
    Abstract: There is provided a polyester elastomer which is excellent in compression set characteristics and has a micro cell structure. The polyester elastomer foam is formed by allowing a polyester elastomer composition containing a polyester elastomer having a melting point of 180 to 240° C. and an epoxy-modified polymer to expand. The epoxy-modified polymer is an epoxy-modified polymer having a weight average molecular weight of 5,000 to 100,000 and an epoxy equivalent of 100 to 3000 g/eq.
    Type: Application
    Filed: July 3, 2012
    Publication date: January 10, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kazumichi KATO, Makoto SAITOU, Kiyoaki KODAMA, Itsuhiro HATANAKA
  • Publication number: 20120145305
    Abstract: Provided is a carrier tape for a foam material which exhibits satisfactory holding properties to a flexible foam material, exhibits satisfactory removability without causing fracture of the foam material, and has good peel properties upon picking up. The carrier tape for a foam material includes a substrate and, arranged on one side thereof, a pressure-sensitive adhesive layer. The carrier tape has a 180-degree peel strength of 0.15 N/20 mm or more at a tensile speed of 300 mm/min with respect to a foam (trade name “SCF100”, supplied by Nitto Denko Corporation). The carrier tape also has a 180-degree peel strength of 0.30 N/20 mm or less at a tensile speed of 10 m/min with respect to the foam (trade name “SCF100”, supplied by Nitto Denko Corporation).
    Type: Application
    Filed: July 30, 2010
    Publication date: June 14, 2012
    Applicant: NITTO DENKO CORPORATTION
    Inventors: Mitsuo Matsumoto, Takeshi Yamanaka, Mitsuru Naitou, Itsuhiro Hatanaka, Ikkou Hanaki
  • Publication number: 20120003457
    Abstract: Provided is a frame-retardant resin foam which is highly expanded and is satisfactorily flexible so as to conform even to a minute clearance. The resin foam includes a resin and a flame-retardant component, in which the flame-retardant component is a polysiloxane-coated flame retarder. In the resin foam, the polysiloxane-coated flame retarder is preferably a polysiloxane-coated metal hydroxide, and the polysiloxane-coated metal hydroxide is contained preferably in a content of 30 to 60 percent by weight based on the total weight of the resin foam.
    Type: Application
    Filed: March 3, 2010
    Publication date: January 5, 2012
    Applicant: NITTO DENKO CORPORATION
    Inventors: Itsuhiro Hatanaka, Kazumichi Kato, Hiroki Fujii, Makoto Saitou, Tetsurou Kobayashi
  • Publication number: 20110318569
    Abstract: Provided is a resin foam which is satisfactorily flexible and electrically conductive, can be easily processed into a desired shape, and is usable as an electrically conductive cushioning sealant capable of filling in a minute clearance between densely packaged electronic components. The resin foam has a volume resistivity of 1010 ?·cm or less and a repulsive load at 50% compression of 5 N/cm2 or less. The resin foam preferably has a surface resistivity of 1010 ohms per square or less, preferably has an apparent density of 0.01 to 0.15 g/cm3, and preferably has an expansion ratio of 9 times or more.
    Type: Application
    Filed: February 26, 2010
    Publication date: December 29, 2011
    Applicant: Nitto Denko Corporation
    Inventors: Tetsurou Kobayashi, Makoto Saitou, Hiroki Fujii, Itsuhiro Hatanaka, Kazumichi Kato, Shinya Nakano
  • Publication number: 20110262744
    Abstract: The present invention relates to a resin foam having a resin compositional homogeneity throughout the entirety from a surface to an inside thereof, having a surface with a 60° gloss value based on JIS Z 8741 (1997) of 1.5 or more, and having a 25% compressive load based on JIS K 6767 (1999) of 2.00 N/cm2 or less.
    Type: Application
    Filed: April 25, 2011
    Publication date: October 27, 2011
    Applicant: NITTO DENKO CORPORATION
    Inventors: Itsuhiro HATANAKA, Makoto SAITOU, Kazumichi KATO, Kiyoaki KODAMA
  • Publication number: 20110171455
    Abstract: To be provided is a foam waterproofing material superior in waterproofness and flexible enough to be compatible with further minute clearance. The foam waterproofing material according to the present invention is a waterproofing material including a foam having a thickness of 0.1 to 1.0 mm, characterized in that the foam has a micro cell structure with an average cell diameter of 10 to 60 ?m and an apparent density of 0.01 to 0.050 g/cm3. In the foam waterproofing material, the repulsive load when compressed to 0.1 mm (0.1 mm-compressive repulsion force) of the foam is preferably 0.01 to 0.1 MPa. The foam preferably has a closed-cell structure or a semi-open and semi-closed-cell structure. In addition, the foam may have a pressure-sensitive adhesive layer on one or both faces thereof. The pressure-sensitive adhesive layer is preferably formed on the foam via a film layer.
    Type: Application
    Filed: February 16, 2009
    Publication date: July 14, 2011
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hiroki Fujii, Kazumichi Kato, Itsuhiro Hatanaka
  • Publication number: 20110003124
    Abstract: The present invention relates to a resin foam including a foam layer and a surface layer, in which the foam layer has a same composition as the surface layer, and the surface layer has a surface coating ratio defined by the following formula (1) of 40% or more: Surface ? ? Coating ? ? Ratio ? ( % ) = [ ( Area ? ? of ? ? surface ) - ( Area ? ? of ? ? pores ? ? existing ? ? in ? ? surface ) ] ( Area ? ? of ? ? surface ) × 100 ( 1 )
    Type: Application
    Filed: July 2, 2010
    Publication date: January 6, 2011
    Applicant: NITTO DENKO CORPORATION
    Inventors: Itsuhiro HATANAKA, Makoto SAITOU, Shigeki ISHIGURO, Kazumichi KATO
  • Publication number: 20100317784
    Abstract: An object is to provide an inorganic powder-containing resin composition excellent in an ability to disperse the inorganic powder and excellent in transferability upon formation into a sheet. Another object is to provide an inorganic powder-containing resin composition capable of forming a dielectric layer having highlight transmittance (without bubble defect) and excellent in surface smoothness. The present invention relates to an inorganic powder-containing resin composition comprising A) an inorganic powder, B) a binder resin, C) diglycerin, and D) at least one diglycerin fatty acid ester selected from the group consisting of a diglycerin fatty acid monoester, a diglycerin fatty acid diester, a diglycerin fatty acid triester, and a diglycerin fatty acid tetraester.
    Type: Application
    Filed: September 28, 2007
    Publication date: December 16, 2010
    Inventors: Katsuya Kume, Tomohide Banba, Makoto Kai, Yasushi Buzoujima, Itsuhiro Hatanaka, Hidenori Suzuki, Tatsuya Suzuki
  • Publication number: 20100239836
    Abstract: The present invention relates to an impact-absorbing material including a foam having a thickness of from 0.1 to 1.0 mm, an average cell size of from 10 to 65 ?m and a density of from 0.01 to 0.20 g/cm3 and having an impact-absorbing property, as defined in the following expression (1), of from 40 to 90%: Impact-absorbing property (%)=(F0?F1)/F0×100 (1), in which F0 represents an impact force at the time of making an impactor collide with only a support plate; and F1 represents an impact force at the time of making an impactor collide with a support plate of a structure composed of the support plate and the impact-absorbing material.
    Type: Application
    Filed: March 17, 2010
    Publication date: September 23, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kazumichi KATO, Makoto SAITOU, Hiroki FUJII, Itsuhiro HATANAKA
  • Publication number: 20100233457
    Abstract: To provide a dustproofing material having superior dustproofness and having such superior flexibility as to fit in a further minute clearance typically of 0.10 to 0.20 mm. Disclosed is a foam dustproofing material which is a dustproofing material including a foam having a thickness of 0.1 to 1.0 mm, in which the foam has a micro cell structure with an average cell diameter of 10 to 65 ?m, has such characteristic properties as to give a load against repulsion of from 0.010 to 0.100 MPa upon compression to a thickness of 0.1 mm, and has an apparent density of 0.01 to 0.050 g/cm3. The foam preferably has a closed cell structure or semi-open/semi-closed cell structure. The foam dustproofing material may further include a pressure-sensitive adhesive layer on one or both sides of the foam. The pressure-sensitive adhesive layer is preferably present above the foam through a film layer.
    Type: Application
    Filed: September 10, 2008
    Publication date: September 16, 2010
    Applicant: NITTO DENIKO CORPORATION
    Inventors: Kazumichi Kato, Hiroki Fujii, Itsuhiro Hatanaka, Takio Itou, Shinya Nakano, Junji Yoshida
  • Publication number: 20100119812
    Abstract: The present invention relates to a light-reflecting member including a polyolefin resin foam as a light-reflecting layer, the polyolefin resin foam being obtained by foam molding a resin composition containing a polyolefin resin. According to the light-reflecting member of the invention, since it has the above-mentioned constitution, the light-reflecting member is excellent in light reflection, impact-absorbing property, and lightness in weight. Moreover, the process for producing a light-reflecting member of the invention can provide a light-reflecting member excellent in light reflection, impact-absorbing property, and lightness in weight by using a polyolefin resin foam.
    Type: Application
    Filed: April 11, 2008
    Publication date: May 13, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hiroki Fujii, Tomohiro Taruno, Makoto Saitou, Takio Itou, Itsuhiro Hatanaka
  • Publication number: 20050277354
    Abstract: An object of the invention is to provide a laminate sheet used in forming a dielectric layer exhibiting desired dielectric properties and a rib simultaneously and integrally. Another object of the invention is to provide a method of producing a back substrate for plasma display panel, which is excellent in production efficiency by significantly reducing the production process by using the laminate sheet. A still other object of the invention is to provide a back substrate for plasma display panel produced by the method described above and a plasma display panel using the back substrate.
    Type: Application
    Filed: June 8, 2005
    Publication date: December 15, 2005
    Inventors: Yasushi Buzoujima, Katsuya Kume, Tomohide Banba, Makoto Kai, Itsuhiro Hatanaka
  • Publication number: 20050212427
    Abstract: The object of the invention is to provide a pressure-sensitive adhesive sheet for removal of fluorescent substances, which removes fluorescent substances on only the top surface of a barrier rib but does not remove fluorescent substances on the side of the barrier rib. The invention relates to a pressure-sensitive adhesive sheet used for removing fluorescent substances adhering to a barrier rib of a plasma display panel back substrate and having at least a pressure-sensitive adhesive layer on one side of a base material, wherein the thickness of the pressure-sensitive adhesive layer is more than 3 ?m and less than 20 ?m.
    Type: Application
    Filed: March 25, 2005
    Publication date: September 29, 2005
    Inventors: Yasushi Buzoujima, Shinichi Kouno, Katsuya Kume, Tomohide Banba, Masanobu Yoneda, Makoto Kai, Itsuhiro Hatanaka
  • Publication number: 20050159070
    Abstract: The invention provides a laminate sheet used for forming a dielectric layer and a rib simultaneously and integrally. The invention also provides a method of producing a back substrate for plasma display panel, which is excellent in the efficiency of production by reducing the production process significantly by using the laminate sheet. The laminate sheet of the invention is used for integrally forming a dielectric layer and a rib on a glass substrate having electrodes, which comprises a barrier layer laminated on a glass resin composition layer containing inorganic powder and a binder resin, an inorganic powder-containing viscoelastic layer laminated on the barrier layer.
    Type: Application
    Filed: January 14, 2005
    Publication date: July 21, 2005
    Inventors: Tomohide Banba, Katsuya Kume, Makoto Kai, Masahiko Ando, Yasushi Buzoujima, Itsuhiro Hatanaka