Patents by Inventor Yuichiro Fujiyama

Yuichiro Fujiyama 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: 11744071
    Abstract: According to one embodiment, a semiconductor memory device includes a memory cell array; a first insulating layer; and a passivation film. The memory cell array includes first interconnect layers and a first memory pillar. The first interconnect layers extend in a first direction substantially parallel to a semiconductor substrate. The first memory pillar passes through the first interconnect layers and extends in a second direction substantially perpendicular to the semiconductor substrate. The first insulating layer is provided above the memory cell array. The passivation film is provided on the first insulating layer, and includes a protrusion at least above the memory cell array and between the passivation film and the first insulating layer.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: August 29, 2023
    Assignee: Kioxia Corporation
    Inventors: Gin Suzuki, Hiroki Yamashita, Yuichiro Fujiyama, Takuji Ohashi
  • Publication number: 20210327899
    Abstract: According to one embodiment, a semiconductor memory device includes a memory cell array; a first insulating layer; and a passivation film. The memory cell array includes first interconnect layers and a first memory pillar. The first interconnect layers extend in a first direction substantially parallel to a semiconductor substrate. The first memory pillar passes through the first interconnect layers and extends in a second direction substantially perpendicular to the semiconductor substrate. The first insulating layer is provided above the memory cell array. The passivation film is provided on the first insulating layer, and includes a protrusion at least above the memory cell array and between the passivation film and the first insulating layer.
    Type: Application
    Filed: June 28, 2021
    Publication date: October 21, 2021
    Applicant: Toshiba Memory Corporation
    Inventors: Gin SUZUKI, Hiroki YAMASHITA, Yuichiro FUJIYAMA, Takuji OHASHI
  • Patent number: 11101285
    Abstract: According to one embodiment, a semiconductor memory device includes a memory cell array; a first insulating layer; and a passivation film. The memory cell array includes first interconnect layers and a first memory pillar. The first interconnect layers extend in a first direction substantially parallel to a semiconductor substrate. The first memory pillar passes through the first interconnect layers and extends in a second direction substantially perpendicular to the semiconductor substrate. The first insulating layer is provided above the memory cell array. The passivation film is provided on the first insulating layer, and includes a protrusion at least above the memory cell array and between the passivation film and the first insulating layer.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: August 24, 2021
    Assignee: Toshiba Memory Corporation
    Inventors: Gin Suzuki, Hiroki Yamashita, Yuichiro Fujiyama, Takuji Ohashi
  • Publication number: 20200295034
    Abstract: According to one embodiment, a semiconductor memory device includes a memory cell array; a first insulating layer; and a passivation film. The memory cell array includes first interconnect layers and a first memory pillar. The first interconnect layers extend in a first direction substantially parallel to a semiconductor substrate. The first memory pillar passes through the first interconnect layers and extends in a second direction substantially perpendicular to the semiconductor substrate. The first insulating layer is provided above the memory cell array. The passivation film is provided on the first insulating layer, and includes a protrusion at least above the memory cell array and between the passivation film and the first insulating layer.
    Type: Application
    Filed: August 28, 2019
    Publication date: September 17, 2020
    Applicant: Toshiba Memory Corporation
    Inventors: Gin SUZUKI, Hiroki YAMASHITA, Yuichiro FUJIYAMA, Takuji OHASHI
  • Patent number: 9862654
    Abstract: A method for producing xylene from feedstock oil includes a cracking/reforming reaction step of bringing the feedstock oil into contact with a catalyst to produce monocyclic aromatic hydrocarbons; a separation/recovery step of separating and recovering, from a product obtained by the cracking/reforming reaction step, a fraction A containing monocyclic aromatic hydrocarbons having a 10 vol % distillation temperature of 75° C. or higher and a 90 vol % distillation temperature of 140° C. or lower, a xylene fraction containing xylene, and a fraction B containing monocyclic aromatic hydrocarbons having a 10 vol % distillation temperature of 145° C. or higher and a 90 vol % distillation temperature of 215° C. or lower; and a xylene conversion step of bringing a mixed fraction obtained by mixing the fractions A and B with each other into contact with a catalyst containing a solid acid to convert the mixed fraction into xylene.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: January 9, 2018
    Assignees: JX Nippon Oil & Energy Corporation, CHIYODA CORPORATION
    Inventors: Shinichiro Yanagawa, Yuichiro Fujiyama, Yasuyuki Iwasa, Ryoji Ida, Susumu Yasui, Yoshishige Sugi, Atsushi Fukui, Akira Utatsu
  • Patent number: 9828309
    Abstract: Method for producing monocyclic aromatic hydrocarbons includes a cracking and reforming reaction step of obtaining products containing monocyclic aromatic hydrocarbons having 6 to 8 carbon atoms and a heavy fraction having 9 or more carbon atoms by bringing the feedstock oil into contact with a catalyst for producing monocyclic aromatic hydrocarbons containing crystalline aluminosilicate to cause a reaction, a catalyst separation step of separating and removing the catalyst for producing monocyclic aromatic hydrocarbons together with tricyclic aromatic hydrocarbons contained in the products from a mixture of the products and a small amount of the catalyst for producing monocyclic aromatic hydrocarbons carried by the products, both of which are derived in the cracking and reforming reaction step, and a purification and recovery step of purifying and recovering the monocyclic aromatic hydrocarbons having 6 to 8 carbon atoms which are separated from the products formed in the cracking and reforming reaction step
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: November 28, 2017
    Assignees: JX Nippon Oil & Energy Corporation, CHIYODA CORPORATION
    Inventors: Shinichiro Yanagawa, Yuichiro Fujiyama, Yasuyuki Iwasa, Ryoji Ida, Masahide Kobayashi, Susumu Yasui, Yoshishige Sugi, Atsushi Fukui, Atsuro Nagumo
  • Patent number: 9567531
    Abstract: The fluid catalytic cracking process according to the present invention includes a first step of feeding a feedstock to a first fluid catalytic cracker, and catalytically cracking the feedstock in the first fluid catalytic cracker, so as to produce a fraction (LCO) having a boiling range of 221 to 343° C. and having a total aromatic content of 40 to 80 volume %; and a second step of feeding an oil to be processed containing the fraction to a second fluid catalytic cracker having a reaction zone, a separation zone, a stripping zone, and a regeneration zone, and catalytically cracking the oil in the reaction zone of the second fluid catalytic cracker, in the presence of a cracking catalyst, at an outlet temperature of the reaction zone of 550 to 750° C., a contact time between the oil and the catalyst of 0.1 to 1 second, and a catalyst/oil ratio of 20 to 40 wt/wt.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: February 14, 2017
    Assignee: NIPPON OIL CORPORATION
    Inventors: Yuichiro Fujiyama, Toshiaki Okuhara, Shigeko Okuhara
  • Patent number: 9550273
    Abstract: According to an embodiment, a polishing device includes a stage, a polishing unit, and a strain measuring unit. The stage is rotatable together with a semiconductor wafer. The polishing unit polishes the rear surface of the semiconductor wafer mounted on the stage beside the stage. The strain measuring unit measures a first strain that is a radial-direction strain of the semiconductor wafer and a second strain that is a circumferential-direction strain of the semiconductor wafer during the polishing.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: January 24, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shiguma Kato, Yuichiro Fujiyama, Takumi Takahashi, Taku Maruo
  • Publication number: 20160207165
    Abstract: According to an embodiment, a polishing device includes a stage, a polishing unit, and a strain measuring unit. The stage is rotatable together with a semiconductor wafer. The polishing unit polishes the rear surface of the semiconductor wafer mounted on the stage beside the stage. The strain measuring unit measures a first strain that is a radial-direction strain of the semiconductor wafer and a second strain that is a circumferential-direction strain of the semiconductor wafer during the polishing.
    Type: Application
    Filed: June 11, 2015
    Publication date: July 21, 2016
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shiguma KATO, Yuichiro Fujiyama, Takumi Takahashi, Taku Maruo
  • Patent number: 8877042
    Abstract: The production of light hydrocarbons consisting of ethylene, propylene, butylenes, and of gasoline is enhanced by introducing a heavy oil feedstream derived from an external source into an ancillary downflow reactor that utilizes the same catalyst composition as an adjacent FCC unit for cracking the heavy oil and withdrawing the desired lighter hydrocarbon reaction product stream from the downflow reactor and regenerating the catalyst in the same regeneration vessel that is used to regenerate the spent catalyst from the FCC unit. The efficiency of the recovery of the desired lighter olefinic hydrocarbons is maximized by limiting the feedstream to the downflow reactor to heavy oils that can be processed under relatively harsher conditions, while minimizing production of undesired by-products.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: November 4, 2014
    Assignees: Saudi Arabian Oil Company, Nippon Oil Corporation
    Inventors: Christopher F. Dean, Yuichiro Fujiyama, Takata Okuhara
  • Publication number: 20140221714
    Abstract: A method for producing xylene from feedstock oil includes a cracking/reforming reaction step of bringing the feedstock oil into contact with a catalyst to produce monocyclic aromatic hydrocarbons; a separation/recovery step of separating and recovering, from a product obtained by the cracking/reforming reaction step, a fraction A containing monocyclic aromatic hydrocarbons having a 10 vol % distillation temperature of 75° C. or higher and a 90 vol % distillation temperature of 140° C. or lower, a xylene fraction containing xylene, and a fraction B containing monocyclic aromatic hydrocarbons having a 10 vol % distillation temperature of 145° C. or higher and a 90 vol % distillation temperature of 215° C. or lower; and a xylene conversion step of bringing a mixed fraction obtained by mixing the fractions A and B with each other into contact with a catalyst containing a solid acid to convert the mixed fraction into xylene.
    Type: Application
    Filed: May 24, 2012
    Publication date: August 7, 2014
    Applicants: CHIYODA CORPORATION, JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Shinichiro Yanagawa, Yuichiro Fujiyama, Yasuyuki Iwasa, Ryoji Ida, Susumu Yasui, Yoshishige Sugi, Atsushi Fukui, Akira Utatsu
  • Publication number: 20140200378
    Abstract: Method for producing monocyclic aromatic hydrocarbons includes a cracking and reforming reaction step of obtaining products containing monocyclic aromatic hydrocarbons having 6 to 8 carbon atoms and a heavy fraction having 9 or more carbon atoms by bringing the feedstock oil into contact with a catalyst for producing monocyclic aromatic hydrocarbons containing crystalline aluminosilicate to cause a reaction, a catalyst separation step of separating and removing the catalyst for producing monocyclic aromatic hydrocarbons together with tricyclic aromatic hydrocarbons contained in the products from a mixture of the products and a small amount of the catalyst for producing monocyclic aromatic hydrocarbons carried by the products, both of which are derived in the cracking and reforming reaction step, and a purification and recovery step of purifying and recovering the monocyclic aromatic hydrocarbons having 6 to 8 carbon atoms which are separated from the products formed in the cracking and reforming reaction step
    Type: Application
    Filed: May 24, 2012
    Publication date: July 17, 2014
    Applicants: CHIYODA CORPORATION, JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Shinichiro Yanagawa, Yuichiro Fujiyama, Yasuyuki Iwasa, Ryoji Ida, Masahide Kobayashi, Susumu Yasui, Yoshishige Sugi, Atsushi Fukui, Atsuro Nagumo
  • Patent number: 8476479
    Abstract: In processing of biomass by catalytic cracking in a fluidized catalytic cracker having a reaction zone, a separation zone, a stripping zone, and a regeneration zone, the feedstock oil containing the biomass is processed in the reaction zone using a catalyst containing 10 to 50 mass % of ultrastable Y-type zeolite under the conditions: outlet temperature of the reaction zone 580 to 680° C., catalyst/oil ratio 10 to 40 wt/wt, reaction pressure 1 to 3 kg/cm2 G, and contact time of the feedstock oil with the catalyst in the reaction zone 0.1 to 1.0 sec, and the catalyst is then treated in the regeneration zone under the conditions: regeneration zone temperature 640 to 720° C., regeneration zone pressure 1 to 3 kg/cm2 G, and exhaust gas oxygen concentration at the regeneration zone outlet 0 to 3 mol %.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: July 2, 2013
    Assignee: Nippon Oil Corporation
    Inventors: Yuichiro Fujiyama, Shigeko Okuhara
  • Patent number: 8415756
    Abstract: There are provided a semiconductor device in which short circuit failures in magnetic resistor elements and the like are reduced, and a method of manufacturing the same. An interlayer insulating film in which memory cells are formed is formed such that the upper surface of the portion of the interlayer insulating film located in a memory cell region where the magnetic resistor elements are formed is at a position lower than that of the upper surface of the portion of the interlayer insulating film located in a peripheral region. Another interlayer insulating film is formed so as to cover the magnetic resistor elements. In the another interlayer insulating film, formed are bit lines electrically coupled to the magnetic resistor elements. Immediately below the magnetic resistor elements, formed are digit lines.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: April 9, 2013
    Assignee: Renesas Electronics Corporation
    Inventors: Keisuke Tsukamoto, Shinya Hirano, Yuichiro Fujiyama, Tatsunori Murata
  • Patent number: 8313548
    Abstract: A method of designing a gas-solid separator that has an inner cylinder having a closed lower end and an opened upper end, and extending in a vertical direction; an outer cylinder that coaxially covers the inner cylinder from the outside and has a gas vent port formed on the upper end side of the inner cylinder and communicating with an exterior; and a plurality of axially extending long holes formed a side surface on the lower end side of the inner cylinder in a circumferential direction, one of long side edge parts of each of the long holes being provided with a guide blade that protrudes outward and is inclined circumferentially so as to cover the long hole.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: November 20, 2012
    Assignees: Japan Cooperation Center, Petroleum, Nippon Oil Corporation
    Inventors: Yuichiro Fujiyama, Toshiaki Okuhara, Shigeko Okuhara, legal representative, Akira Uchiura
  • Patent number: 8101132
    Abstract: To provide a mixing device capable of effectively mixing stock oil with a catalyst, while increasing the amount of throughput, the relations of 8.0?Q×(W/D)/(u1+u2), Q=300 to 2000 [kg/m2s], W/D=0.2 to 0.5, u1=5 to 300 [m/s], and u2=5 to 300 [m/s] are satisfied when a mass flow per unit area of a moving bed is Q [kg/nes], the difference between an outer diameter and an inner diameter of the moving bed is W [m], an inner diameter of a reaction tube is D [m], a linear velocity of a horizontal component of the stock oil at a jet orifice of the internal stock oil injection nozzle u1 [m/s], and a linear velocity of a horizontal component of the stock oil at a jet orifice of the external stock oil injection nozzle u2 [m/s].
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: January 24, 2012
    Assignees: Japan Cooperation Center, Petroleum, Nippon Oil Corporation
    Inventors: Yuichiro Fujiyama, Toshiaki Okuhara, Shigeko Okuhara, legal representative
  • Patent number: 8083824
    Abstract: A gas-solid separator has: an inner cylinder 10 having a closed lower end 11 and an opened upper end 1, and extending in a vertical direction; and an outer cylinder 2 that coaxially covers the inner cylinder 10 from the outside and has a gas vent port 6 formed on the upper end side and communicating with an exterior, wherein a plurality of axially extending long holes 4 are formed on a side surface on the lower end 11 side of the inner cylinder 10 in a circumferential direction, one of long side edge parts of each of the long holes 4 is provided with a guide blade 5 that protrudes outward and is inclined circumferentially so as to cover the long hole 4, and in a section of the outer cylinder 2 that surrounds the plurality of long holes 4 of the inner cylinder 10, an inner diameter D1 of a lower part is larger than an inner diameter D2 of an upper part.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: December 27, 2011
    Assignees: Japan Cooperation Center, Petroleum, Nippon Oil Corporation
    Inventors: Yuichiro Fujiyama, Toshiaki Okuhara, Shigeko Okuhara, legal representative
  • Patent number: 8070846
    Abstract: A method for operating a gas-solid separator that has: an inner cylinder 10 having a closed lower end 11 and an opened upper end 1, and extending in a vertical direction; an outer cylinder 2 that coaxially covers the inner cylinder 10 from the outside and has a gas vent port 6 formed on the upper end side of the inner cylinder and communicating with an exterior; and a plurality of axially extending long holes 4 having a length L[m] and formed on a side surface on the lower end 11 side of the inner cylinder 10 in a circumferential direction, one of long side edge parts of each of the long holes being provided with a guide blade 5 that protrudes outward and is inclined circumferentially so as to cover the long hole 4, wherein the length L of each long hole 4 is defined such as to satisfy an expression of non-dimensional Stokes number St=(?pdp2/(18?))·U/L?0.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: December 6, 2011
    Assignees: Japan Cooperation Center, Petroleum, Nippon Oil Corporation
    Inventors: Yuichiro Fujiyama, Toshiaki Okuhara, Shigeko Okuhara, legal representative, Akira Uchiura
  • Publication number: 20110226668
    Abstract: The production of light hydrocarbons consisting of ethylene, propylene, butylenes, and of gasoline is enhanced by introducing a heavy oil feedstream derived from an external source into an ancillary downflow reactor that utilizes the same catalyst composition as an adjacent FCC unit for cracking the heavy oil and withdrawing the desired lighter hydrocarbon reaction product stream from the downflow reactor and regenerating the catalyst in the same regeneration vessel that is used to regenerate the spent catalyst from the FCC unit. The efficiency of the recovery of the desired lighter olefinic hydrocarbons is maximized by limiting the feedstream to the downflow reactor to heavy oils that can be processed under relatively harsher conditions, while minimizing production of undesired by-products.
    Type: Application
    Filed: May 19, 2011
    Publication date: September 22, 2011
    Inventors: Christopher F. DEAN, Yuichiro Fujiyama, Takata Okuhara
  • Patent number: 7988756
    Abstract: A gas-solid separator has: an inner cylinder 10 having a closed lower end 11 and an opened upper end 1, and extending in a vertical direction; and an outer cylinder 2 that coaxially covers the inner cylinder 10 from the outside and has a gas vent port 6 formed on the upper end side of the inner cylinder and communicating with an exterior, wherein a plurality of axially extending long holes 4 are formed on a side surface on the lower end 11 side of the inner cylinder 10 in a circumferential direction, one of long side edge parts of each of the long holes 4 is provided with a guide blade 5 that protrudes outward and is inclined circumferentially so as to cover the long hole 4, and a part between the long holes 4 of the inner cylinder 10 is concaved in a center direction of the inner cylinder 10.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: August 2, 2011
    Assignees: Japan Cooperation Ctr., Petroleum, Nippon Oil Corporation
    Inventors: Yuichiro Fujiyama, Toshiaki Okuhara, Shigeko Okuhara, legal representative