Patents by Inventor Hiroyuki Doi
Hiroyuki Doi 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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Publication number: 20230212343Abstract: The present invention provides a carbon material dispersion in which a carbon material is contained at a high concentration in a liquid medium containing an organic solvent but is unlikely to reaggregate and is stably dispersed, and from which various products, such as an ink capable of forming a coating film having excellent electric conductivity, can be formed.Type: ApplicationFiled: July 2, 2021Publication date: July 6, 2023Inventors: Hiroyuki SHIMANAKA, Yoshikazu MURAKAMI, Jun KAMABAYASHI, Seiji DOI
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Publication number: 20230059212Abstract: A solid-state imaging device includes an N-type semiconductor layer, an element layer including a photoelectric conversion element and an active element, an interconnect layer providing an interconnect for the active element, and an element isolation trench penetrating the semiconductor layer. The element layer includes a P-type region and an N-type region. A first hole storage layer is formed on a surface of the semiconductor layer on a side opposite to the element layer. A second hole storage layer is formed in contact portions of the semiconductor layer and the element layer with the element isolation trench. The P-type region of the element layer and the first hole storage layer are connected to each other by the second hole storage layer.Type: ApplicationFiled: February 19, 2021Publication date: February 23, 2023Applicants: TOWER PARTNERS SEMICONDUCTOR CO., LTD., TOWER SEMICONDUCTOR LTD.Inventors: Masahiro ODA, Hiroki TAKAHASHI, Hiroyuki DOI, Hirohisa OTSUKI
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Publication number: 20210269536Abstract: The present invention provides a method of cell culture comprising adding a cell-containing seed medium to an initial medium and starting to culture the cell in the initial medium, wherein the initial medium has an organism-derived culture medium additive added thereto and the amount of the C-terminal amidated species in the produced protein is controlled by the copper content of the initial medium at the start of cell culture.Type: ApplicationFiled: May 21, 2021Publication date: September 2, 2021Inventors: Seiko YAMAMOTO, Hiroyuki Doi, Isamu Terashima
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Patent number: 11046772Abstract: The present invention provides a method of cell culture comprising adding a cell-containing seed medium to an initial medium and starting to culture the cell in the initial medium, wherein the initial medium has an organism-derived culture medium additive added thereto and the amount of the C-terminal amidated species in the produced protein is controlled by the copper content of the initial medium at the start of cell culture.Type: GrantFiled: March 25, 2016Date of Patent: June 29, 2021Assignee: Chugai Seiyaku Kabushiki KaishaInventors: Seiko Yamamoto, Hiroyuki Doi, Isamu Terashima
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Patent number: 10378366Abstract: A steam turbine rotor blade achieving both abrasion resistance and reliability, and a method for manufacturing a steam turbine rotor blade capable of obtaining such a steam turbine rotor blade are provided. A steam turbine rotor blade according to the invention is characterized by including a blade base material and an erosion shield formed on a surface of the blade base material, wherein the blade base material is composed of a titanium alloy, and the erosion shield is composed of a weld overlay layer including a parent phase composed of pure titanium in which a metal element is solid-dissolved or a titanium alloy in which a metal element is solid-dissolved, and a hard phase dispersed in the parent phase.Type: GrantFiled: April 11, 2016Date of Patent: August 13, 2019Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Shinji Oikawa, Masahiko Arai, Hiroyuki Doi, Hideo Yoda
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Patent number: 10260357Abstract: It is an objective of the invention to provide a steam turbine rotor of which a rotor shaft is made of a low-cost heat resistant ferritic steel and that can withstand high main steam temperatures of about 650° C. There is provided a steam turbine rotor comprising: a rotor shaft made of a heat resistant ferritic steel such as a 12-Cr steel; and a rotor blade made of a Ti—Al alloy, wherein the Ti—Al alloy includes: from 38 to 45 atomic % of Al; from 0.5 to 2 atomic % of V; from 2 to 6 atomic % of Cr and/or Mo; and the balance being Ti and incidental impurities.Type: GrantFiled: December 16, 2015Date of Patent: April 16, 2019Assignee: Mitsubishi Hitachi Power Systems, Ltd.Inventors: Shinji Oikawa, Shinya Imano, Hiroyuki Doi, Akira Yoshinari
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Publication number: 20180080329Abstract: A steam turbine rotor blade achieving both abrasion resistance and reliability, and a method for manufacturing a steam turbine rotor blade capable of obtaining such a steam turbine rotor blade are provided. A steam turbine rotor blade according to the invention is characterized by including a blade base material and an erosion shield formed on a surface of the blade base material, wherein the blade base material is composed of a titanium alloy, and the erosion shield is composed of a weld overlay layer including a parent phase composed of pure titanium in which a metal element is solid-dissolved or a titanium alloy in which a metal element is solid-dissolved, and a hard phase dispersed in the parent phase.Type: ApplicationFiled: April 11, 2016Publication date: March 22, 2018Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Shinji OIKAWA, Masahiko ARAI, Hiroyuki DOI, Hideo YODA
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Publication number: 20180051090Abstract: The present invention provides a method of cell culture comprising adding a cell-containing seed medium to an initial medium and starting to culture the cell in the initial medium, wherein the initial medium has an organism-derived culture medium additive added thereto and the amount of the C-terminal amidated species in the produced protein is controlled by the copper content of the initial medium at the start of cell culture.Type: ApplicationFiled: March 25, 2016Publication date: February 22, 2018Applicant: Chugai Seiyaku Kabushiki KaishaInventors: Seiko YAMAMOTO, Hiroyuki DOI, Isamu TERASHIMA
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Patent number: 9878403Abstract: A Ni-based alloy for a welding material including, by mass, 0.001 to 0.1% of C, 18 to 25% of Co, 16 to 20% of Cr, 2.5 to 3.5% of Al, 9.0 to 15.0% of Mo+W, 0.001 to 0.03% of B and the balance being Ni and inevitable impurities.Type: GrantFiled: February 19, 2013Date of Patent: January 30, 2018Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Shinya Imano, Hiroyuki Doi, Jun Sato
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Patent number: 9873930Abstract: It is an objective of the present invention to provide a precipitation-hardening martensitic stainless steel having well-balanced properties of high mechanical strength, high toughness and good corrosion resistance properties. There is provided a precipitation-hardening martensitic stainless steel comprising: 0.10 mass % or less of C; 13.0 to 15.0 mass % of Cr; 7.0 to 10.0 mass % of Ni; 2.0 to 3.0 mass % of Mo; 0.5 to 2.5 mass % of Ti; 0.5 to 2.5 mass % of Al; 0.5 mass % or less of Si; 0.1 to 1.0 mass % of Mn; and the balance including Fe and incidental impurities, in which the mass % content of the Ti (represented by [Ti content]), the mass % content of the Al (represented by [Al content]) and the mass % content of the C (represented by [C content]) satisfy relationships of “0.5?[Ti content]?2.5” and “0.5?[Al content]+2[C content]?2.7”.Type: GrantFiled: November 9, 2011Date of Patent: January 23, 2018Assignee: Mitsubishi Hitachi Power Systems, Ltd.Inventors: Shinji Oikawa, Hideo Yoda, Masahiko Arai, Hiroyuki Doi
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Patent number: 9567656Abstract: A nickel (Ni) based alloy for forging includes: 0.001 to 0.1 wt. % of carbon (C); 12 to 23 wt. % of chromium (Cr); 3.5 to 5.0 wt. % of aluminum (Al); 5 to 12 combined wt. % of tungsten (W) and molybdenum (Mo) in which the Mo content is 5 wt. % or less; a negligible small amount of titanium (Ti), tantalate (Ta) and niobium (Nb); and the balance of Ni and inevitable impurities.Type: GrantFiled: September 25, 2014Date of Patent: February 14, 2017Assignee: Mitsubishi Hitachi Power Systems, Ltd.Inventors: Shinya Imano, Hiroyuki Doi, Jun Sato
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Patent number: 9541281Abstract: A high-temperature piping product is configured from a plurality of primary pipe members and a welding material. The primary pipe members are each made from an Ni-based forged alloy containing: Ni, Al, and at least one of Mo and W. The total content of the Mo and the W being 3-8 mass %. The Ni-based forged alloy exhibiting a ??-phase dissolution temperature of from 920 to 970° C., and the ?? phase being precipitated in 30 volume % or more in a temperature range of from 700 to 800° C. The welding material is made from an Ni-based cast alloy having a cast structure formed by welding. The Ni-based cast alloy containing: Ni, Al, and at least one of Mo and W, the total content of the Mo and the W being 9-15 mass %, the Ni-based cast alloy exhibiting a ??-phase dissolution temperature of from 850 to 900° C.Type: GrantFiled: April 8, 2013Date of Patent: January 10, 2017Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Shinya Imano, Hiroyuki Doi, Jun Sato
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Patent number: 9388702Abstract: The problem to be solved of the present invention is to provide a precipitation hardening martensitic stainless steel having excellent tissue stability, strength, toughness, and corrosion-resistance, requiring no sub-zero treatment, and having excellent productivity; and also a steam turbine long blade using the same. The problem is solved by providing a precipitation hardening martensitic stainless steel containing, by mass, 0.1% or less of C; 0.1% or less of N; 9.0% or more and 14.0% or less of Cr; 9.0% or more and 14.0% or less of Ni; 0.5% or more and 2.5% or less of Mo; 0.5% or less of Si; 1.0% or less of Mn; 0.25% or more and 1.75% or less of Ti; 0.25% or more and 1.75% or less of Al, and the rest is Fe and inevitable impurities; and a steam turbine long blade using the precipitation hardening martensitic stainless steel.Type: GrantFiled: January 15, 2013Date of Patent: July 12, 2016Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Shinji Oikawa, Hideo Yoda, Masahiko Arai, Hiroyuki Doi
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Publication number: 20160177742Abstract: It is an objective of the invention to provide a steam turbine rotor of which a rotor shaft is made of a low-cost heat resistant ferritic steel and that can withstand high main steam temperatures of about 650° C. There is provided a steam turbine rotor comprising: a rotor shaft made of a heat resistant ferritic steel such as a 12-Cr steel; and a rotor blade made of a Ti—Al alloy, wherein the Ti—Al alloy includes: from 38 to 45 atomic % of Al; from 0.5 to 2 atomic % of V; from 2 to 6 atomic % of Cr and/or Mo; and the balance being Ti and incidental impurities.Type: ApplicationFiled: December 16, 2015Publication date: June 23, 2016Inventors: Shinji OIKAWA, Shinya IMANO, Hiroyuki DOI, Akira YOSHINARI
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Publication number: 20160130954Abstract: The invention provides a Ni—Fe-based alloy which is preferable for a welding of a joint between different materials such as a steel material and a Ni-based alloy, and a rotor for a steam turbine which is manufactured by using the same. The invention employs a Ni—Fe-based alloy including Cr: 14 to 18%, Al: 1.0 to 2.5%, Mo+W: 2.5 to 5.0%, C: 0.01 to 0.10%, B: 0.001 to 0.03%, and Fe: 15 to 20%, in mass, in which the remaining portion is constructed by an unavoidable impurity and Ni, as a welding metal. As a result, it is possible to provide a rotor for a steam turbine which can hold down a reduction of a ductility and a toughness generated in the case of welding the different materials, and is excellent in a strength and the ductility.Type: ApplicationFiled: January 15, 2016Publication date: May 12, 2016Inventors: Jun SATO, Shinya IMANO, Hiroyuki DOI
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Publication number: 20160108743Abstract: Disclosed is a turbine blade including a turbine blade substrate including an iron-base alloy; an erosion shield plate including a Co-base alloy; and a shim including a Ni—Fe alloy, in which the erosion shield plate is fixed to a leading edge of the turbine blade substrate with the shim therebetween by an electron beam welding. Thus, a turbine blade having a highly reliable, bonded portion of an erosion shield, and a turbine rotor and a steam turbine using the turbine blade are provided.Type: ApplicationFiled: December 31, 2015Publication date: April 21, 2016Inventors: Masahiko ARAI, Hiroyuki DOI, Hideo YODA, Katsumi TANAKA
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Patent number: 9320154Abstract: An electrode connected to a TH pad requiring electric conduction is formed on a bonded surface of a first multilayer substrate having piercing TH to form a solder bump on the electrode. An electrode connected to the TH pad is formed on a bonded surface of a second multilayer substrate to be bonded having a piercing TH at a position opposite the electrode formed on the first multilayer substrate to form a solder bump on the electrode. A three-layered sheet is formed by applying an adhesive as a resin material that is not completely cured to both surfaces of a core material as the cured resin, and has holes at positions corresponding to the TH and the solder bump, respectively. The first and the second multilayer substrates are then laminated having the bonded surfaces facing each other while having the three-layered sheet positioned and interposed therebetween, and batch thermocompression bonded.Type: GrantFiled: May 27, 2014Date of Patent: April 19, 2016Assignee: HITACHI, LTD.Inventors: Akira Soeda, Chiko Yorita, Shinichirou Tooya, Takayuki Ono, Mitsuru Takahira, Yuuichi Sekino, Akira Goto, Yoshimasa Tashiro, Hiroyuki Doi, Tsutomu Sakamoto
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Patent number: 9315372Abstract: A grease pump unit has a metering valve 37 and a grease supplying device 50 in which a suction tube 16 on a pump device 11 extends through a follower plate 19 in a grease can 100, grease in the grease can 100 being sucked through the suction tube 16 and discharged through a discharge port 17 by activation of the pump device 11. Provided are a bubble dividing device 32 which supplies the grease discharged through the discharge port 17 through an supply pipe 24 to micronize bubbles in the grease and which supplies the grease through a supply pipe 36 to the metering valve 37, and a return pipe 47 which returns a portion of the grease not discharged through the metering valve 37 into the grease can 100 via the follower plate 19.Type: GrantFiled: January 17, 2012Date of Patent: April 19, 2016Assignees: IHI COMPRESSOR AND MACHINERY CO., LTD., KOGANEI CORPORATIONInventors: Hiroyuki Doi, Hirokazu Tanaka
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Patent number: 9289411Abstract: Provided is a novel anti-HCV agent including as an active ingredient a peroxide derivative represented by the general formula (I). In the general formula (I), C represents an alicyclic hydrocarbon ring group which may be substituted, n represents an integer of from 1 to 6, and R represents a hydrogen atom or a hydroxyalkyl group. The peroxide derivative exhibits potent anti-HCV activity by remarkably suppressing HCV-RNA replication.Type: GrantFiled: October 2, 2012Date of Patent: March 22, 2016Assignee: NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITYInventors: Nobuyuki Kato, Masanori Ikeda, Yusuke Wataya, Hye-Sook Kim, Hiroyuki Doi
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Patent number: 9263482Abstract: A solid-state imaging apparatus having a plurality of pixels, comprising: a substrate; a wiring layer formed on the substrate and including an insulating film and a plurality of wires; a plurality of lower electrodes formed on the wiring layer in one-to-one correspondence with the plurality of pixels; a photoelectric conversion film formed covering the plurality of lower electrodes; a light-transmissive upper electrode formed on the photoelectric conversion film; and a shield electrode extending through a gap between each pair of adjacent lower electrodes among the plurality of lower electrodes, the shield electrode having a fixed potential and being electrically insulated from the plurality of lower electrodes.Type: GrantFiled: December 27, 2013Date of Patent: February 16, 2016Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Hiroyuki Doi, Mitsuo Yasuhira, Ryohei Miyagawa, Yoshiyuki Ohmori