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).
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Patent number: 11744071Abstract: 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: GrantFiled: June 28, 2021Date of Patent: August 29, 2023Assignee: Kioxia CorporationInventors: Gin Suzuki, Hiroki Yamashita, Yuichiro Fujiyama, Takuji Ohashi
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Publication number: 20210327899Abstract: 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: ApplicationFiled: June 28, 2021Publication date: October 21, 2021Applicant: Toshiba Memory CorporationInventors: Gin SUZUKI, Hiroki YAMASHITA, Yuichiro FUJIYAMA, Takuji OHASHI
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Patent number: 11101285Abstract: 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: GrantFiled: August 28, 2019Date of Patent: August 24, 2021Assignee: Toshiba Memory CorporationInventors: Gin Suzuki, Hiroki Yamashita, Yuichiro Fujiyama, Takuji Ohashi
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Publication number: 20200295034Abstract: 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: ApplicationFiled: August 28, 2019Publication date: September 17, 2020Applicant: Toshiba Memory CorporationInventors: Gin SUZUKI, Hiroki YAMASHITA, Yuichiro FUJIYAMA, Takuji OHASHI
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Patent number: 9862654Abstract: 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: GrantFiled: May 24, 2012Date of Patent: January 9, 2018Assignees: JX Nippon Oil & Energy Corporation, CHIYODA CORPORATIONInventors: Shinichiro Yanagawa, Yuichiro Fujiyama, Yasuyuki Iwasa, Ryoji Ida, Susumu Yasui, Yoshishige Sugi, Atsushi Fukui, Akira Utatsu
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Patent number: 9828309Abstract: 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 stepType: GrantFiled: May 24, 2012Date of Patent: November 28, 2017Assignees: JX Nippon Oil & Energy Corporation, CHIYODA CORPORATIONInventors: Shinichiro Yanagawa, Yuichiro Fujiyama, Yasuyuki Iwasa, Ryoji Ida, Masahide Kobayashi, Susumu Yasui, Yoshishige Sugi, Atsushi Fukui, Atsuro Nagumo
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Patent number: 9567531Abstract: 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: GrantFiled: October 8, 2009Date of Patent: February 14, 2017Assignee: NIPPON OIL CORPORATIONInventors: Yuichiro Fujiyama, Toshiaki Okuhara, Shigeko Okuhara
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Patent number: 9550273Abstract: 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: GrantFiled: June 11, 2015Date of Patent: January 24, 2017Assignee: Kabushiki Kaisha ToshibaInventors: Shiguma Kato, Yuichiro Fujiyama, Takumi Takahashi, Taku Maruo
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Publication number: 20160207165Abstract: 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: ApplicationFiled: June 11, 2015Publication date: July 21, 2016Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Shiguma KATO, Yuichiro Fujiyama, Takumi Takahashi, Taku Maruo
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Patent number: 8877042Abstract: 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: GrantFiled: May 19, 2011Date of Patent: November 4, 2014Assignees: Saudi Arabian Oil Company, Nippon Oil CorporationInventors: Christopher F. Dean, Yuichiro Fujiyama, Takata Okuhara
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Publication number: 20140221714Abstract: 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: ApplicationFiled: May 24, 2012Publication date: August 7, 2014Applicants: CHIYODA CORPORATION, JX NIPPON OIL & ENERGY CORPORATIONInventors: Shinichiro Yanagawa, Yuichiro Fujiyama, Yasuyuki Iwasa, Ryoji Ida, Susumu Yasui, Yoshishige Sugi, Atsushi Fukui, Akira Utatsu
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Publication number: 20140200378Abstract: 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 stepType: ApplicationFiled: May 24, 2012Publication date: July 17, 2014Applicants: CHIYODA CORPORATION, JX NIPPON OIL & ENERGY CORPORATIONInventors: Shinichiro Yanagawa, Yuichiro Fujiyama, Yasuyuki Iwasa, Ryoji Ida, Masahide Kobayashi, Susumu Yasui, Yoshishige Sugi, Atsushi Fukui, Atsuro Nagumo
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Patent number: 8476479Abstract: 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: GrantFiled: August 6, 2007Date of Patent: July 2, 2013Assignee: Nippon Oil CorporationInventors: Yuichiro Fujiyama, Shigeko Okuhara
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Patent number: 8415756Abstract: 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: GrantFiled: August 27, 2010Date of Patent: April 9, 2013Assignee: Renesas Electronics CorporationInventors: Keisuke Tsukamoto, Shinya Hirano, Yuichiro Fujiyama, Tatsunori Murata
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Patent number: 8313548Abstract: 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: GrantFiled: July 5, 2007Date of Patent: November 20, 2012Assignees: Japan Cooperation Center, Petroleum, Nippon Oil CorporationInventors: Yuichiro Fujiyama, Toshiaki Okuhara, Shigeko Okuhara, legal representative, Akira Uchiura
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Patent number: 8101132Abstract: 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: GrantFiled: July 10, 2007Date of Patent: January 24, 2012Assignees: Japan Cooperation Center, Petroleum, Nippon Oil CorporationInventors: Yuichiro Fujiyama, Toshiaki Okuhara, Shigeko Okuhara, legal representative
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Patent number: 8083824Abstract: 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: GrantFiled: July 5, 2007Date of Patent: December 27, 2011Assignees: Japan Cooperation Center, Petroleum, Nippon Oil CorporationInventors: Yuichiro Fujiyama, Toshiaki Okuhara, Shigeko Okuhara, legal representative
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Patent number: 8070846Abstract: 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: GrantFiled: July 5, 2007Date of Patent: December 6, 2011Assignees: Japan Cooperation Center, Petroleum, Nippon Oil CorporationInventors: Yuichiro Fujiyama, Toshiaki Okuhara, Shigeko Okuhara, legal representative, Akira Uchiura
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Publication number: 20110226668Abstract: 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: ApplicationFiled: May 19, 2011Publication date: September 22, 2011Inventors: Christopher F. DEAN, Yuichiro Fujiyama, Takata Okuhara
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Patent number: 7988756Abstract: 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: GrantFiled: July 5, 2007Date of Patent: August 2, 2011Assignees: Japan Cooperation Ctr., Petroleum, Nippon Oil CorporationInventors: Yuichiro Fujiyama, Toshiaki Okuhara, Shigeko Okuhara, legal representative