Patents by Inventor Kazufumi Kato

Kazufumi Kato 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: 10811658
    Abstract: An object of the present invention is to provide a separator maintaining high rate characteristics and enabling suppression of short circuit. The object is achieved by a separator comprising a substrate having an inner surface and an outer surface, and inorganic particles presented on the outer surface and the inner surface of the substrate, wherein the substrate has a porosity of 55% or more and a mean flow pore size of 30 ?m or less, the inorganic particles have an average particle size of 1.0 to 4.0 ?m, and the inorganic particles comprises 40% by volume or less of particles having a particle size of 1.0 ?m or less and 30 to 75% by volume of particles having a particle size of 2.0 ?m or more.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: October 20, 2020
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Yusuke Yamada, Makoto Uozumi, Takashi Misao, Mitsutaka Nakamura, Masaaki Sasayama, Kazufumi Kato
  • Publication number: 20200316906
    Abstract: Provided is a nonwoven fabric and a laminated nonwoven fabric suitable as the skin material of a composite sound-absorbing material. The nonwoven fabric and laminated nonwoven fabric are easily formable, thin, and lightweight and excel in form stability, and can nevertheless be controlled within a given range of aeration after being formed into shape. A nonwoven fabric having a laminate structure in which at least one ultra-fine fiber layer (M) having an average fiber diameter of 0.3 to 7 ?m (inclusive) and a basis weight of 1 g/m2 to 40 g/m2 (inclusive) and at least one continuous filament layer (S) having an average fiber diameter of 10 to 30 ?m (inclusive) are integrated together by partial thermocompression bonding.
    Type: Application
    Filed: December 13, 2018
    Publication date: October 8, 2020
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Shinya Yamamuro, Rumina Obi, Kazufumi Kato, Tomoya Tanaka, Chie Okamura, Yasushi Isono, Junki Saito
  • Patent number: 10700325
    Abstract: A nonwoven fabric separator for a lead storage battery includes a nonwoven fabric configured with regenerated fibers or synthetic fibers. The nonwoven fabric is composed of a recycled fiber or synthetic fiber having a relationship between the average pore diameter (D) of the nonwoven fabric separator and the number of pores (N) that satisfies the following equation: 1.0×102<D*N<1.0×104. The nonwoven fabric separator includes at least two layers which are integrated.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: June 30, 2020
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Junichi Kusakabe, Seiichi Amano, Kazufumi Kato
  • Publication number: 20200040495
    Abstract: The present disclosure provides: a biodegradable nonwoven fabric for thermoforming, the biodegradable nonwoven fabric being composed of a fiber of a polylactic acid-based polymer, and having a basis weight of 20-300 g/m2, preferably, a biodegradable nonwoven fabric characterized by being composed of a long fiber of a polylactic acid polymer, having an MD-direction elongation of 50% or more at 120° C., and having an MD-direction dimensional change rate of ±4% or less at 80-140° C. as determined by thermomechanical analysis; a method for producing a molded body by using said biodegradable nonwoven fabric; and a method for molding a biodegradable beverage extraction container, the method being characterized in that the molded body has an MD-direction elongation change rate of 4% or less, as determined by thermomechanical analysis (TMA) under a load of 0.05 N/2 mm at 30-100° C.
    Type: Application
    Filed: October 12, 2017
    Publication date: February 6, 2020
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Yusuke Yamada, Chie Okamura, Takuya Matsumoto, Rumina Obi, Kazufumi Kato
  • Publication number: 20190071228
    Abstract: The present invention provides a novel packaging material for sterilization which has processing suitability as a packaging material, is compatible with all sterilization processing methods such as those performed under high-temperature conditions, has small variation in shapes and dimensions, and is capable of maintaining an internal sterilized condition. This packaging material for sterilization is configured from at least two layers of laminated non-woven fabrics comprising a non-woven fabric layer (I) formed of continuous long fibers having an average fiber diameter of 5-30 ?m and a non-woven fabric layer (II) formed of ultra-fine fibers having an average fiber diameter of 0.1-4 ?m.
    Type: Application
    Filed: February 21, 2017
    Publication date: March 7, 2019
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Junichi Kusakabe, Masaaki Mori, Seiichi Amano, Kazufumi Kato
  • Publication number: 20190051878
    Abstract: A nonwoven fabric separator for a lead storage battery includes a nonwoven fabric configured with regenerated fibers or synthetic fibers.
    Type: Application
    Filed: February 21, 2017
    Publication date: February 14, 2019
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Junichi Kusakabe, Seiichi Amano, Kazufumi Kato
  • Patent number: 9972913
    Abstract: An object of the present invention is to provide a noise absorbing fabric in which electromagnetic waves are not susceptible to being reflected and which has superior noise absorbing ability, a noise absorbing fabric having noise absorbing ability across a wide band, a noise absorbing fabric that is soft, highly flexible, thin, and can be incorporated in intricate portions of electronic components or housings and the like by being bent or folded and the like, and a noise absorbing fabric that can be easily and stably produced without using an expensive soft magnetic material, is inexpensive and demonstrates high performance. In the noise absorbing fabric, a metal is subjected to metal processing on at least one side of a fabric, and the common logarithmic value of the surface resistivity of the surface subjected to metal processing is within the range of 0 to 4.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: May 15, 2018
    Assignee: ASAHI KASEI FIBERS CORPORATION
    Inventors: Kazufumi Kato, Tomoya Tanaka, Rumina Obi
  • Publication number: 20170002488
    Abstract: Provided is a noise-absorbing sheet that is highly effective at absorbing noise from magnetic and/or electric fields, the noise-absorbing effect being effective in wider bandwidths. A noise-absorbing sheet upon which at least two layers are stacked, wherein the noise absorbing sheet is characterized in that a magnetic layer containing a magnetic material and a layer of a noise-absorbing fabric in which a metal is deposited on constituent fibers are layered on said sheet, and the common logarithmic value of the surface resistivity of at least one side of the noise-absorbing fabric is 0 to 6.
    Type: Application
    Filed: November 21, 2014
    Publication date: January 5, 2017
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Tomoya TANAKA, Chie OKAMURA, Shinichi OKAJIMA, Tomoyuki KAWAMURA, Kazufumi KATO
  • Patent number: 9461290
    Abstract: Provided is a separator which shows excellent performance in electric insulation, electrolyte-holding property and ion- or electron-permeability and which can be stably manufactured. The separator is configured from a laminate non-woven fabric consisting of at least two layers, said layers including a non-woven fabric layer (layer I) that comprises a synthetic fiber having a fiber size of 0.1 ?m or greater and less than 4.0 ?m and a non-woven fabric layer (layer II) that comprises a thermoplastic resin fiber having a fiber size of 4.0-30.0 ?m inclusive, and has a weight per area of 3.0 g/m2 or greater and less than 20.0 g/m2.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: October 4, 2016
    Assignee: ASAHI KASEI FIBERS CORPORATION
    Inventors: Yusuke Yamada, Junichi Kusakabe, Rumina Obi, Shinichi Okajima, Kazufumi Kato
  • Patent number: 9233517
    Abstract: Disclosed is an electromagnetic shielding sheet that has a smaller increase in the thickness of a base after the formation of a metal coating film when compared with conventional electromagnetic shielding sheets, and which has excellent electromagnetic wave shielding properties despite a small amount of adhered metal. According to the present invention, the electromagnetic shielding sheet can endure metal working processes and has high electromagnetic wave shielding properties, resulting in a thin, very flexible fabric sheet. Specifically disclosed is an electromagnetic shielding sheet which is composed of a laminated non-woven fabric that has at least a first layer and a second layer, and which is characterized in that the first layer is a layer of thermoplastic synthetic fibers having a fiber diameter of 6 ?m to 50 ?m, the second layer is a layer of ultrafine fibers having a fiber diameter of 0.1 ?m to 5.0 ?m, and a metal is adhered to at least one surface of the sheet.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: January 12, 2016
    Assignee: ASAHI KASEI FIBERS CORPORATION
    Inventors: Kazufumi Kato, Kazuaki Shikata, Rumina Obi, Ikuo Ueno
  • Publication number: 20150270522
    Abstract: An object of the present invention is to provide a separator maintaining high rate characteristics and enabling suppression of short circuit. The object is achieved by a separator comprising a substrate having an inner surface and an outer surface, and inorganic particles presented on the outer surface and the inner surface of the substrate, wherein the substrate has a porosity of 55% or more and a mean flow pore size of 30 ?m or less, the inorganic particles have an average particle size of 1.0 to 4.0 ?m, and the inorganic particles comprises 40% by volume or less of particles having a particle size of 1.0 ?m or less and 30 to 75% by volume of particles having a particle size of 2.0 ?m or more.
    Type: Application
    Filed: September 17, 2013
    Publication date: September 24, 2015
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Yusuke Yamada, Makoto Uozumi, Takashi Misao, Mitsutaka Nakamura, Masaaki Sasayama, Kazufumi Kato
  • Publication number: 20150171397
    Abstract: Provided is a separator which shows excellent performance in electric insulation, electrolyte-holding property and ion- or electron-permeability and which can be stably manufactured. The separator is configured from a laminate non-woven fabric consisting of at least two layers, said layers including a non-woven fabric layer (layer I) that comprises a synthetic fiber having a fiber size of 0.1 ?m or greater and less than 4.0 ?m and a non-woven fabric layer (layer II) that comprises a thermoplastic resin fiber having a fiber size of 4.0-30.0 ?m inclusive, and has a weight per area of 3.0 g/m2 or greater and less than 20.0 g/m2.
    Type: Application
    Filed: April 4, 2013
    Publication date: June 18, 2015
    Applicant: ASAHI KASEI FIBERS CORPORATION
    Inventors: Yusuke Yamada, Junichi Kusakabe, Rumina Obi, Shinichi Okajima, Kazufumi Kato
  • Patent number: 8953304
    Abstract: There is provided a high performance solid electrolytic capacitor that can be manufactured stably. The present invention provides the solid electrolytic capacitor comprising an anode foil and a cathode foil, and a separator arranged between the anode foil and the cathode foil, wherein the anode foil, the cathode foil, and the separator are wound around, so that the separator is intervened between the anode foil and the cathode foil, the anode foil has a dielectric oxide film layer, the separator comprises a solid electrolyte and a nonwoven fabric holding the solid electrolyte, the nonwoven fabric composing the separator is a laminated nonwoven fabric having at least two layers of the nonwoven fabric layers, and the laminated nonwoven fabric comprises a nonwoven fabric layer (layer I) composed of ultra fine fiber having a fiber diameter of 0.1 to 4 ?m, and a nonwoven fabric layer (layer II) composed of a thermoplastic resin fiber having a fiber diameter of 6 to 30 ?m.
    Type: Grant
    Filed: August 19, 2010
    Date of Patent: February 10, 2015
    Assignee: Asahi Kasei Fibers Corporation
    Inventors: Kazufumi Kato, Rumina Obi, Ikuo Ueno
  • Publication number: 20120247868
    Abstract: An object of the present invention is to provide a noise absorbing fabric in which electromagnetic waves are not susceptible to being reflected and which has superior noise absorbing ability, a noise absorbing fabric having noise absorbing ability across a wide band, a noise absorbing fabric that is soft, highly flexible, thin, and can be incorporated in intricate portions of electronic components or housings and the like by being bent or folded and the like, and a noise absorbing fabric that can be easily and stably produced without using an expensive soft magnetic material, is inexpensive and demonstrates high performance. In the noise absorbing fabric, a metal is subjected to metal processing on at least one side of a fabric, and the common logarithmic value of the surface resistivity of the surface subjected to metal processing is within the range of 0 to 4.
    Type: Application
    Filed: December 15, 2010
    Publication date: October 4, 2012
    Inventors: Kazufumi Kato, Tomoya Tanaka, Rumina Obi
  • Publication number: 20120154985
    Abstract: There is provided a high performance solid electrolytic capacitor that can be manufactured stably. The present invention provides the solid electrolytic capacitor comprising an anode foil and a cathode foil, and a separator arranged between the anode foil and the cathode foil, wherein the anode foil, the cathode foil, and the separator are wound around, so that the separator is intervened between the anode foil and the cathode foil, the anode foil has a dielectric oxide film layer, the separator comprises a solid electrolyte and a nonwoven fabric holding the solid electrolyte, the nonwoven fabric composing the separator is a laminated nonwoven fabric having at least two layers of the nonwoven fabric layers, and the laminated nonwoven fabric comprises a nonwoven fabric layer (layer I) composed of ultra fine fiber having a fiber diameter of 0.1 to 4 ?m, and a nonwoven fabric layer (layer II) composed of a thermoplastic resin fiber having a fiber diameter of 6 to 30 ?m.
    Type: Application
    Filed: August 19, 2010
    Publication date: June 21, 2012
    Inventors: Kazufumi Kato, Rumina Obi, Ikuo Ueno
  • Publication number: 20120111627
    Abstract: Disclosed is an electromagnetic shielding sheet that has a smaller increase in the thickness of a base after the formation of a metal coating film when compared with conventional electromagnetic shielding sheets, and which has excellent electromagnetic wave shielding properties despite a small amount of adhered metal. According to the present invention, the electromagnetic shielding sheet can endure metal working processes and has high electromagnetic wave shielding properties, resulting in a thin, very flexible fabric sheet. Specifically disclosed is an electromagnetic shielding sheet which is composed of a laminated non-woven fabric that has at least a first layer and a second layer, and which is characterized in that the first layer is a layer of thermoplastic synthetic fibers having a fiber diameter of 6 ?m to 50 ?m, the second layer is a layer of ultrafine fibers having a fiber diameter of 0.1 ?m to 5.0 ?m, and a metal is adhered to at least one surface of the sheet.
    Type: Application
    Filed: July 22, 2010
    Publication date: May 10, 2012
    Inventors: Kazufumi Kato, Kazuaki Shikata, Rumina Obi, Ikuo Ueno
  • Patent number: 7809468
    Abstract: A server includes a communication section which receives event information from an event detection device which detects a plurality of types of events occurring in a plurality of temporary storage devices provided at different locations, and transmits transportation load display information to a PC, a storage section which stores lot state data indicating states of lots and storage state data indicating states of the temporary storage devices, an update section which updates the lot state data and the storage state data based on the event information, and an information generation section which generates transportation load display information for notifying a lot transportation state to the user based on the lot state data and the storage state data.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: October 5, 2010
    Assignees: Seiko Epson Corporation, OMRON Corporation
    Inventors: Takashi Yamagishi, Kazufumi Kato, Takuma Miura, Katsutoshi Ozawa
  • Publication number: 20080113135
    Abstract: The present invention provides a bag which can be opened easily and straightly in the same direction as the opening direction and can ensure easier removal of contents therefrom. Further, the present invention provides a bag having excellent moistureproof effect and improved storage stability of contents by interleaving an aluminum foil as an interlayer. There is disclosed a bag characterized in that the bag is made of a laminated film of a biaxially stretched polystyrene film which comprises an amorphous polystyrene copolymer resin and has a Vicat softening temperature of 110 to 155° C. and a polyethylene film, wherein the biaxially stretched polystyrene film is disposed outside the bag and the polyethylene film is disposed inside the bag. There is also disclosed a bag characterized in that the bag has excellent moistureproof effect and improved storage stability of contents by interleaving an aluminum foil as an interlayer.
    Type: Application
    Filed: October 27, 2005
    Publication date: May 15, 2008
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Kazufumi Kato, Yuuji Mizutari
  • Publication number: 20080021594
    Abstract: A server includes a communication section which receives event information from an event detection device which detects a plurality of types of events occurring in a plurality of temporary storage devices provided at different locations, and transmits transportation load display information to a PC, a storage section which stores lot state data indicating states of lots and storage state data indicating states of the temporary storage devices, an update section which updates the lot state data and the storage state data based on the event information, and an information generation section which generates transportation load display information for notifying a lot transportation state to the user based on the lot state data and the storage state data.
    Type: Application
    Filed: August 27, 2007
    Publication date: January 24, 2008
    Inventors: Takashi Yamagishi, Kazufumi Kato, Takuma Miura, Katsutoshi Ozawa
  • Patent number: RE43405
    Abstract: A method of displaying a measurement result in an inspection process using network, the method includes a first step that a host, which intensively controls and manages a device for inspecting a lot to be processed in one or a plurality of steps, transmits to the device a condition of measuring a lot determined to be put in, a second step that the device measures the lot based on the measurement condition received via the network and then obtains measured data, a third step that the host determines whether the measured data received via the network is abnormal or normal based on a predetermined assessment standard and then produces a result of assessing a measured value so as to transmit the result to the device and a fourth step that the device provides a display corresponding to the result of assessing the measured value in accordance with the received result of assessing the measured value as well as a previously registered display standard.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: May 22, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Kazufumi Kato