Patents by Inventor Tomoaki Ichikawa

Tomoaki Ichikawa 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: 20130004654
    Abstract: A reactive polymer-supported porous film for separator, that has sufficient adhesiveness between electrodes and separator and can suitably be used to produce a battery having low internal resistance and high rate performance, a method for producing the porous film, a method for producing a battery using the porous film, and an electrode/porous film assembly are disclosed. The reactive polymer-supported porous film for battery separator includes a porous film substrate having supported thereon a reactive polymer obtained by reacting a crosslinkable polymer having at least one reactive group selected from the group consisting of 3-oxetanyl group and epoxy group in the molecule, with an acid anhydride, thereby partially crosslinking the polymer.
    Type: Application
    Filed: September 12, 2012
    Publication date: January 3, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshihiro Uetani, Keisuke Kii, Tomoaki Ichikawa, Michio Satsuma, Satoshi Nishikawa, Shinji Bessho
  • Patent number: 8277968
    Abstract: Provided is a reactive polymer-supporting porous film for use as a battery separator which comprises a porous substrate film and a partially crosslinked reactive polymer supported on the porous substrate film, the partially crosslinked reactive polymer being obtained by the reaction of a crosslinkable polymer having at least one reactive group selected from the group consisting of 3-oxetanyl group and epoxy group in the molecule with a monocarboxylic acid. Further, provided is a method of manufacturing a battery which comprises layering electrodes on the reactive polymer-supporting porous film.
    Type: Grant
    Filed: January 10, 2006
    Date of Patent: October 2, 2012
    Assignees: Nitto Denko Corporation, Sunstar Giken Kabushiki Kaisha
    Inventors: Tomoaki Ichikawa, Yoshihiro Uetani, Shigeru Fujita, Keisuke Kii, Satoshi Nishikawa, Shinji Bessyo
  • Publication number: 20120153512
    Abstract: The present invention relates to an epoxy resin composition for semiconductor encapsulation, including the following components (A) to (E):(A) an epoxy resin; (B) a phenol resin other than component (C); (C) a silane-modified phenol resin represented by Formula (1) as defined in the specification; (D) a curing accelerator; and (E) an inorganic filler; wherein the component (C) is contained in an amount of 0.8 to 30.0% by weight based on a total weight of organic components in the epoxy resin composition.
    Type: Application
    Filed: December 21, 2011
    Publication date: June 21, 2012
    Applicant: NITTO DENKO CORPORATION
    Inventors: Naoya SUGIMOTO, Tomoaki ICHIKAWA, Mitsuaki FUSUMADA, Tomohito IWASHIGE
  • Publication number: 20120115281
    Abstract: A method of manufacturing a semiconductor device which is excellent in high-temperature high-humidity reliability without decreasing moldability and curability is provided. The method includes sealing a semiconductor element in resin using a semiconductor-sealing epoxy resin composition; and then performing a heating treatment. The semiconductor-sealing epoxy resin composition contains (A) an epoxy resin of formula (1): wherein X is a single bond, —CH2—, —S— or —O—; and R1 to R4, which may be the same as or different, are each —H or —CH3, (B) a phenolic resin, (C) an amine-based curing accelerator, and (D) an inorganic filler. The heating treatment is performed under heat treatment conditions defined by a region in which a relationship t?3.3×10?5 exp(2871/T) is satisfied where t is heat treatment time in minutes and T is heat treatment temperature in ° C. and where 185?T?300.
    Type: Application
    Filed: November 4, 2011
    Publication date: May 10, 2012
    Applicant: NITTO DENKO CORPORATION
    Inventors: Tomohito Iwashige, Tomoaki Ichikawa, Naoya Sugimoto, Mitsuaki Fusumada, Hiroyuki Hotehama, Shinya Akizuki
  • Publication number: 20120043051
    Abstract: An air guide structure for guiding outside air in front of the vehicle to equipment to be cooled. Ai air guide duct structure (20) is provided with: left and right side-wall ducts (46, 68) provided to the left and right sides of equipment (16) to be cooled; and left and right seal sections (47, 69) protruding from the inner wall surfaces (46a, 68a) of the left and right side-wall ducts toward the equipment (16) to be cooled. The left and right seal sections (47, 69) are spaced by a predetermined distance (51) from the equipment (16) to be cooled toward the front of the vehicle body. Air pressure during the travel of the vehicle elastically deforms the right and left seal sections (47, 69) to cause the seal sections to make contact with the equipment (16) to be cooled.
    Type: Application
    Filed: March 16, 2010
    Publication date: February 23, 2012
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Hidetoshi Kurokawa, Tadayuki Uchida, Tomoaki Ichikawa, Toshikatsu Mouri, Hideki Miura, Ryota Abe, Takashi Aoki, Ken Nakane
  • Patent number: 8092935
    Abstract: A reactive polymer-supported porous film for a battery separator containing a substrate porous film of a porous film and a reactive polymer supported on the substrate porous film. The porous film has a temperature of 200° C. or more, at which a thickness of the porous film is reduced to ½ of a thickness when a probe is placed on the porous film. The reactive polymer is obtainable by partially crosslinking a crosslinkable polymer and a polyfunctional isocyanate. The crosslinkable polymer is obtainable by copolymerizing a crosslinkable monomer having in a molecule at least one reactive group selected from a 3-oxetanyl group and an epoxy group and a crosslinkable monomer having a reactive group capable of reacting with an isocyanate group.
    Type: Grant
    Filed: July 20, 2005
    Date of Patent: January 10, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Tomoaki Ichikawa, Kazushige Yamamoto, Yoshihiro Uetani, Keisuke Kii
  • Publication number: 20110308727
    Abstract: A partially crosslinked adhesive-supported porous film for battery separator, which in producing a battery, can effectively produce a battery as an electrode/separator laminate in which an electrode and a separator are temporarily bonded to each other without causing mutual slip movement between the electrode and the separator and which after producing a battery, functions itself as a separator having a small heat shrinkage factor even at high temperatures, and a process of producing a battery using such a partially crosslinked adhesive-supported porous film.
    Type: Application
    Filed: August 26, 2011
    Publication date: December 22, 2011
    Applicant: NITTO DENKO CORPORATION
    Inventors: Keisuke KII, Michio SATSUMA, Yoshihiro UETANI, Mutsuko YAMAGUCHI, Yutaka KISHII, Shuuhei MURATA, Tomoaki ICHIKAWA
  • Publication number: 20100308477
    Abstract: The present invention relates to an epoxy resin composition for semiconductor encapsulation, which includes the following components (A) to (E): (A) a bifunctional epoxy resin, (B) a curing agent, (C) an imidazole compound represented by the formula (1), in which R1 and R2 each independently represent an alkyl group or an alkylol group, in which at least one of R1 and R2 represents an alkylol group, and R3 represents an alkyl group or an aryl group, (D) a linear saturated carboxylic acid having a number average molecular weight of 550 to 800, and (E) an inorganic filler.
    Type: Application
    Filed: June 3, 2010
    Publication date: December 9, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Shinya AKIZUKI, Tsuyoshi ISHIZAKA, Yasuko TABUCHI, Tomoaki ICHIKAWA
  • Patent number: 7833654
    Abstract: The invention provides an adhesive-carrying porous film for use as a battery separator, comprising: a substrate porous film, wherein when a 1 mm diameter penetrating thermomechanical analyzer probe is placed on the film under a 70 g load to measure a thickness while heating the film from room temperature at a rate of 200° C./minute to a temperature where the film thickness decreases by half when the probe was initially placed is 200° C. or more, a partially crosslinked adhesive carried on the film, the adhesive is prepared by reacting a reactive polymer having a functional group capable of reacting with an isocyanate group with a polyfunctional isocyanate so the reactive polymer is partially crosslinked, a porous film is temporarily bonded to an electrode to provide an electrode/separator laminate, the porous film in a battery functions as a separator which does not melt or break with small heat shrinkage under high temperatures.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: November 16, 2010
    Assignee: Nitto Denko Corporation
    Inventors: Tomoaki Ichikawa, Keisuke Kii, Yoshihiro Uetani, Kazushige Yamamoto, Michio Satsuma, Mutsuko Yamaguchi
  • Publication number: 20100227223
    Abstract: The method for producing a porous film of the present invention includes producing a stretched film by stretching a resin sheet containing at least polyolefin, and then irradiating the stretched film with a vacuum ultraviolet ray. The separator for a non-aqueous electrolyte battery of the present invention is composed of the porous film obtained by the production method of the present invention. The non-aqueous electrolyte battery of the present invention is provided with the separator for a non-aqueous electrolyte battery of the present invention.
    Type: Application
    Filed: May 23, 2008
    Publication date: September 9, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Shunsuke Noumi, Tomoaki Ichikawa, Shinichi Ooizumi, Yoshihiro Uetani, Masaki Ujihara
  • Patent number: 7641246
    Abstract: A bumper beam structure for a vehicle includes a height-raising wall provided on an upper portion of a beam body to be fixedly on left and right frames of a vehicle body. The height-raising wall includes: a bottom wall portion fixed to the upper portion of the beam body; a running-up preventing wall portion extending upwardly from the bottom wall portion; a first reinforcing wall portion connecting to the respective one end of the running-up preventing and bottom wall portions; and a second reinforcing wall portion connecting to the respective other ends of the running-up preventing and bottom wall portions. With such a height-raising wall, the bumper beam structure can interfere with another vehicle of a higher height to prevent the other vehicle from running up onto the vehicle provided with the bumper beam structure.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: January 5, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventors: Tomoaki Ichikawa, Keiichi Honda, Kojiro Okabe
  • Publication number: 20090202898
    Abstract: It is intended to provide a reactive polymer-supported porous film that is capable of achieving sufficient adhesion between the electrode and the separator; reduced in internal resistance; and excellent in high rate characteristics, the porous film being useful as a battery separator which, after production of the battery, is not melted or broken under a high temperature and functions as a separator having a small heat shrinkage ratio as well as to provide a process for producing batteries using the reactive polymer-supported porous film.
    Type: Application
    Filed: July 20, 2005
    Publication date: August 13, 2009
    Applicant: NITTO DENKO CORPORATION
    Inventors: Tomoaki Ichikawa, Kazushige Yamamoto, Yoshihiro Uetani, Keisuke Kii
  • Publication number: 20090098464
    Abstract: The invention provides a reactive polymer-supporting porous film for use as a battery separator which comprises a porous substrate film and a partially crosslinked reactive polymer supported on the porous substrate film, the partially crosslinked reactive polymer being obtained by the reaction of a crosslinkable polymer having at least one reactive group selected from the group consisting of 3-oxetanyl group and epoxy group in the molecule with a monocarboxylic acid.
    Type: Application
    Filed: January 10, 2006
    Publication date: April 16, 2009
    Inventors: Tomoaki Ichikawa, Yoshihiro Uetani, Shigeru Fujita, Keisuke Kii, Satoshi Nishikawa, Shinji Bessyo
  • Publication number: 20080315597
    Abstract: A bumper beam structure for a vehicle includes a height-raising wall provided on an upper portion of a beam body to be fixedly on left and right frames of a vehicle body. The height-raising wall includes: a bottom wall portion fixed to the upper portion of the beam body; a running-up preventing wall portion extending upwardly from the bottom wall portion; a first reinforcing wall portion connecting to the respective one end of the running-up preventing and bottom wall portions; and a second reinforcing wall portion connecting to the respective other ends of the running-up preventing and bottom wall portions. With such a height-raising wall, the bumper beam structure can interfere with another vehicle of a higher height to prevent the other vehicle from running up onto the vehicle provided with the bumper beam structure.
    Type: Application
    Filed: June 20, 2008
    Publication date: December 25, 2008
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Tomoaki Ichikawa, Keiichi Honda, Kojiro Okabe
  • Publication number: 20070184340
    Abstract: The invention provides an adhesive-carrying porous film for use as a battery separator, which comprises: a substrate porous film such that when a probe of a probe penetrating thermomechanical analyzer, said probe having a diameter of 1 mm, is placed on the porous film under a load of 70 g to measure a thickness thereof while heating the porous film from room temperature at a rate of 2° C./minute, a temperature at which the thickness of the porous film decreases to a half of the thickness of the porous film when the probe was initially placed thereon is 200° C. or more; and a partially crosslinked adhesive carried on the substrate porous film, the partially crosslinked adhesive being prepared by reacting a reactive polymer having a functional group capable of reacting with an isocyanate group therein with a polyfunctional isocyanate so that the reactive polymer is partially crosslinked. Such a porous film (a separator) is temporarily bonded to an electrode to provide an electrode/separator laminate.
    Type: Application
    Filed: April 1, 2004
    Publication date: August 9, 2007
    Inventors: Tomoaki Ichikawa, Keisuke Kii, Yoshihiro Uetani, Kazuhige Yamamoto, Michio Satsuma, Mutsuko Yamaguchi
  • Publication number: 20060099497
    Abstract: A reactive polymer-supported porous film for separator, that has sufficient adhesiveness between electrodes and separator and can suitably be used to produce a battery having low internal resistance and high rate performance, a method for producing the porous film, a method for producing a battery using the porous film, and an electrode/porous film assembly are disclosed. The reactive polymer-supported porous film for battery separator includes a porous film substrate having supported thereon a reactive polymer obtained by reacting a crosslinkable polymer having at least one reactive group selected from the group consisting of 3-oxetanyl group and epoxy group in the molecule, with an acid anhydride, thereby partially crosslinking the polymer.
    Type: Application
    Filed: November 7, 2005
    Publication date: May 11, 2006
    Inventors: Yoshihiro Uetani, Keisuke Kii, Tomoaki Ichikawa, Michio Satsuma, Satoshi Nishikawa, Shinji Bessho
  • Publication number: 20040101757
    Abstract: A partially crosslinked adhesive-supported porous film for battery separator, which in producing a battery, can effectively produce a battery as an electrode/separator laminate in which an electrode and a separator are temporarily bonded to each other without causing mutual slip movement between the electrode and the separator and which after producing a battery, functions itself as a separator having a small heat shrinkage factor even at high temperatures, and a process of producing a battery using such a partially crosslinked adhesive-supported porous film.
    Type: Application
    Filed: November 3, 2003
    Publication date: May 27, 2004
    Applicant: NITTO DENKO CORPORATION
    Inventors: Keisuke Kii, Michio Satsuma, Yoshihiro Uetani, Mutsuko Yamaguchi, Yutaka Kishii, Shuuhei Murata, Tomoaki Ichikawa
  • Publication number: 20040080068
    Abstract: A process of producing porous films having a high porosity and excellent air permeability, even though they have a small film thickness and a high strength, and a process of producing battery separators.
    Type: Application
    Filed: October 21, 2003
    Publication date: April 29, 2004
    Applicant: NITTO DENKO CORPORATION
    Inventors: Shinichi Ooizumi, Kazushige Yamamoto, Tomoaki Ichikawa