Patents by Inventor Kenya Tanaka

Kenya Tanaka 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: 20210032446
    Abstract: A polyethylene powder having an average particle size of 70 ?m or more and less than 150 ?m, wherein a compressive strength at a time of 10% displacement of particles having a particle size of 60 ?m is 1.2 times or more and less than 2.5 times based on a compressive strength at a time of 10% displacement of particles having a particle size of 100 ?m.
    Type: Application
    Filed: March 12, 2019
    Publication date: February 4, 2021
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventor: Kenya Tanaka
  • Patent number: 10597796
    Abstract: An object of the present invention is to provide a polyethylene powder for a fiber which is excellent in the color tone of an obtained article and allows an obtained fiber to be highly drawn, and a fiber and an article made of the polyethylene powder for a fiber. The present invention provides a polyethylene powder for a fiber, wherein the intrinsic viscosity measured at 135° C. in decalin is 10 dL/g or higher and 40 dL/g or lower, the total amount of Al, Mg, Ti, Zr, and Hf is 1.0 ppm or higher and lower than 15 ppm, the amount of a particle having a particle size exceeding 355 ?m is 2.0% by mass or lower, and the amount of a particle having a particle size of 75 ?m or smaller is 3.0% by mass or higher and 50.0% by mass or lower.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: March 24, 2020
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Kenya Tanaka, Akio Fujiwara
  • Patent number: 10544240
    Abstract: The present invention provides an ethylene polymer having a viscosity average molecular weight of 100×104 or more and 1,000×104 or less, in which a ratio between an isothermal crystallization time at 125° C. and an isothermal crystallization time at 123° C. obtained under specific isothermal crystallization time measurement conditions is 3.5 or more and 10.0 or less, and a degree of crystallization obtained using a differential scanning calorimeter (DSC) is 40% or more and 75% or less.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: January 28, 2020
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventor: Kenya Tanaka
  • Publication number: 20190359740
    Abstract: The present invention provides an ethylene polymer having a viscosity average molecular weight of 100×104 or more and 1,000×104 or less, in which a ratio between an isothermal crystallization time at 125° C. and an isothermal crystallization time at 123° C. obtained under specific isothermal crystallization time measurement conditions is 3.5 or more and 10.0 or less, and a degree of crystallization obtained using a differential scanning calorimeter (DSC) is 40% or more and 75% or less.
    Type: Application
    Filed: January 30, 2018
    Publication date: November 28, 2019
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventor: Kenya Tanaka
  • Patent number: 10312883
    Abstract: An elastic wave device includes a first IDT electrode on a first main surface of a LiNbO3 substrate, and a second IDT electrode on a second main surface thereof. The application of alternating voltages with reversed phases to each other to the first and second IDT electrodes excites plate waves in which SH waves in a high order mode predominate. The elastic wave device uses the plate waves in the high order mode in which the SH waves predominate.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: June 4, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Michio Kadota, Tetsuya Kimura, Kenya Hashimoto, Shuji Tanaka
  • Patent number: 9556380
    Abstract: A fluorescent material having a composition formula represented as (Gd1-?-?-?L?Ce?Tb?)3+a(Al1-u-vGauScv)5-bO12 (L is at least one element selected from Y and Lu), satisfying the following ranges: 0?a?0.1, 0?b?0.1, 0???0.3, 0.0003???0.005, 0.02???0.2, 0.27?u?0.75, and 0?v?0.02. Preferably, 0<a?0.07, 0<b?0.07, 0<??0.15, 0.0003???0.004, 0.03???0.15, 0.35?u?0.70, and 0?v?0.02.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: January 31, 2017
    Assignee: Hitachi Metals, Ltd.
    Inventors: Kenya Tanaka, Ryouhei Nakamura
  • Publication number: 20160017223
    Abstract: A fluorescent material having a composition formula represented as (Gd1-?-?-?L?Ce?Tb?)3+a(Al1-u-vGauScv)5-bO12 (L is at least one element selected from Y and Lu), satisfying the following ranges: 0?a?0.1, 0?b?0.1, 0???0.3, 0.0003???0.005, 0.02???0.2, 0.27?u?0.75, and 0?v?0.02. Preferably, 0<a?0.07, 0<b?0.07, 0<??0.15, 0.0003???0.004, 0.03???0.15, 0.35?u?0.70, and 0?v?0.02.
    Type: Application
    Filed: April 10, 2014
    Publication date: January 21, 2016
    Inventors: Kenya TANAKA, Ryouhei NAKAMURA
  • Publication number: 20150311425
    Abstract: A method for manufacturing piezoelectric ceramic including the steps of: preparing a raw material so as to contain A, B, Ba and Zr as major constituents in a composition ratio represented by the following formula: (1-s)ABO3-sBaZrO3 (where A is at least one element selected from alkali metals, B is at least one of transition metal elements and includes Nb, 0.06<s?0.15); molding the raw material to obtain a molded body; sintering the molded body in a reducing atmosphere; and subjecting a sintered body obtained at the sintering step to a heat treatment in an oxidative atmosphere.
    Type: Application
    Filed: November 27, 2013
    Publication date: October 29, 2015
    Inventors: Shuji YAMANAKA, Genei NAKAJIMA, Tomotsugu KATO, Kenya TANAKA, Tomoaki KARAKI
  • Publication number: 20150299903
    Abstract: An object of the present invention is to provide a polyethylene powder for a fiber which is excellent in the color tone of an obtained article and allows an obtained fiber to be highly drawn, and a fiber and an article made of the polyethylene powder for a fiber. The present invention provides a polyethylene powder for a fiber, wherein the intrinsic viscosity measured at 135° C. in decalin is 10 dL/g or higher and 40 dL/g or lower, the total amount of Al, Mg, Ti, Zr, and Hf is 1.0 ppm or higher and lower than 15 ppm, the amount of a particle having a particle size exceeding 355 ?m is 2.0% by mass or lower, and the amount of a particle having a particle size of 75 ?m or smaller is 3.0% by mass or higher and 50.0% by mass or lower.
    Type: Application
    Filed: April 17, 2015
    Publication date: October 22, 2015
    Applicant: Asahi Kasei Chemicals Corporation
    Inventors: Kenya Tanaka, Akio Fujiwara
  • Publication number: 20150037535
    Abstract: The present invention relates to an organic-inorganic composite comprising an inorganic compound particle and a polymer attached to the inorganic compound particle, wherein a molecular weight distribution of the polymer is 2.3 or less, and a content of the inorganic compound particle is 96% by mass or less with respect to a total mass of the organic-inorganic composite. Moreover, the present invention relates to a photonic crystal, an organic-inorganic composite film, a coating material, and a thermoplastic composition comprising the organic-inorganic composite.
    Type: Application
    Filed: March 13, 2012
    Publication date: February 5, 2015
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Mitsuyo Akimoto, Kenya Tanaka
  • Patent number: 8815122
    Abstract: A polycrystalline scintillator for detecting soft X-rays, which comprises Ce as a light-emitting element and at least Y, Gd, Al, Ga and O, and has a garnet crystal structure, and a composition represented by the general formula of (Y1-x-zGdxCez)3+a(Al1-uGau)5-aO12, wherein 0?a?0.1, 0.15?x?0.3, 0.002?z?0.015, and 0.35?u?0.55, with 0.05-1 ppm by mass of Fe and 0.5-10 ppm by mass of Si by outer percentage, a ratio ?50/?100 of 3 or more, wherein ?50 is an absorption coefficient of X-rays at 50 keV, and ?100 is an absorption coefficient of X-rays at 100 keV, and afterglow of 800 ppm or less after 3 ms from the termination of X-ray irradiation.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: August 26, 2014
    Assignee: Hitachi Metals, Ltd.
    Inventors: Ryouhei Nakamura, Kenya Tanaka, Shunsuke Ueda
  • Publication number: 20130337161
    Abstract: An organic-inorganic composite film containing an organic-inorganic composite including an inorganic compound particle and a polymer bonded to the inorganic compound particles. A percentage of voids in the film is 3 to 70 volume % with reference to a volume of the film.
    Type: Application
    Filed: February 20, 2012
    Publication date: December 19, 2013
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Mitsuyo Akimoto, Kenya Tanaka
  • Publication number: 20130043430
    Abstract: A polycrystalline scintillator for detecting soft X-rays, which comprises Ce as a light-emitting element and at least Y, Gd, Al, Ga and O, and has a garnet crystal structure, and a composition represented by the general formula of (Y1?x?zGdxCez)3+a(Al1?uGau)5?aO12, wherein 0?a?0.1, 0.15?x?0.3, 0.002?z?0.015, and 0.35?u?0.55, with 0.05-1 ppm by mass of Fe and 0.5-10 ppm by mass of Si by outer percentage, a ratio ?50/?100 of 3 or more, wherein ?50 is an absorption coefficient of X-rays at 50 keV, and ?100 is an absorption coefficient of X-rays at 100 keV, and afterglow of 800 ppm or less after 3 ms from the termination of X-ray irradiation.
    Type: Application
    Filed: October 25, 2011
    Publication date: February 21, 2013
    Applicant: HITACHI METALS, LTD.
    Inventors: Ryouhei Nakamura, Kenya Tanaka, Shunsuke Ueda
  • Patent number: 5677681
    Abstract: If a code is transmitted at a first transmission rate, a base station modulates the entirety of the code, namely a preamble, a synchronizing signal and a call-data, by two values and transmits them at the first transmission rate. If the code is transmitted at a second transmission rate, which is double the first transmission rate, the base station modulates the preamble and the logically inverted synchronizing signal (obtained by inverting the "1", "0" logic of the original synchronizing signal) by the two values, transmits them at the first transmission rate, modulates the call-data by four values and transmits it at the second transmission rate. As a result, it suffices to provide the pager with a single common preamble detector and a single common synchronizing detector, irrespective of the transmission rate.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: October 14, 1997
    Assignee: Fujitsu Limited
    Inventors: Kenya Tanaka, Yasuhiro Yokota
  • Patent number: 5140308
    Abstract: A mobile radio system has an upward and downward control channel for controlling a call-out transmitted from a mobile terminal station, independently from a communication channel. The system detects an abnormal state of an automobile equipped in the mobile terminal station, and automatically transmits a call-out signal through the upward control channel to said base station when the abnormal state is detected. The abnormal state occurs when a door is opened, for example. It receives a response signal via the downward control channel from a base station, the response signal corresponding to the call-out signal of the terminal station, and produces an alarm sound when identification signal ID of the terminal station is detected from the response signal. Thus, the abnormal state of the automobile can be indicated by the alarm sound outputted from the portable receiver, thereby preventing the automobile from theft.
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: August 18, 1992
    Assignee: Fujitsu Limited
    Inventor: Kenya Tanaka