Patents by Inventor Takashi Hiraoka
Takashi Hiraoka 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: 11834608Abstract: An aqueous sol used in CO2 foam flooding, one of EOR flooding methods for recovering crude oil by injection into the oil reservoir of an onshore or offshore oil field, the aqueous sol increasing foam stability even over a substantial period of time, at high temperatures and pressures, and in salt water, thus improving crude oil recovery rate. The aqueous sol for increasing stability of froth or emulsion in a mixture containing carbon dioxide, water, and oil in CO2 foam flooding of EOR, the sol including silica particles having an average particle diameter of 1 to 100 nm as measured by dynamic light scattering and having surfaces at least partially coated with a silane compound having a hydrolyzable group, the silica particles serving as a dispersoid and dispersed in an aqueous solvent having a pH of 1.0 to 6.0 serving as a dispersion medium.Type: GrantFiled: November 26, 2020Date of Patent: December 5, 2023Assignees: INPEX CORPORATION, HIROSAKI UNIVERSITY, NISSAN CHEMICAL CORPORATIONInventors: Takashi Hiraoka, Hideharu Yonebayashi, Yoshihiro Miyagawa, Masanobu Sagisaka, Masashi Abe
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Publication number: 20230374372Abstract: An aqueous sol used in CO2 foam flooding, one of EOR flooding methods for recovering crude oil by injection into the oil reservoir of an onshore or offshore oil field, the aqueous sol increasing foam stability even over a substantial period of time, at high temperatures and pressures, and in salt water, thus improving crude oil recovery rate. The aqueous sol for increasing stability of froth or emulsion in a mixture containing carbon dioxide, water, and oil in CO2 foam flooding of EOR, the sol including silica particles having an average particle diameter of 1 to 100 nm as measured by dynamic light scattering and having surfaces at least partially coated with a silane compound having a hydrolyzable group, the silica particles serving as a dispersoid and dispersed in an aqueous solvent having a pH of 1.0 to 6.0 serving as a dispersion medium.Type: ApplicationFiled: July 31, 2023Publication date: November 23, 2023Applicants: INPEX CORPORATION, HIROSAKI UNIVERSITY, NISSAN CHEMICAL CORPORATIONInventors: Takashi HIRAOKA, Hideharu YONEBAYASHI, Yoshihiro MIYAGAWA, Masanobu SAGISAKA, Masashi ABE
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Patent number: 11760870Abstract: An object of the present invention is to provide a resin composition for encapsulation capable of suppressing warpage even when a large-area substrate is encapsulated. In order to solve the above problems, a resin composition for encapsulating an electronic member containing an epoxy resin (A), a compound having a polyalkylene glycol chain (B), and an inorganic filler (C) is provided. Thus, even when a large-area substrate is encapsulated, an effect of suppressing the warpage can be obtained.Type: GrantFiled: January 23, 2019Date of Patent: September 19, 2023Assignee: NAGASE CHEMTEX CORPORATIONInventors: Yosuke Oi, Takashi Hiraoka
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Patent number: 11718770Abstract: A curable resin composition includes: a first epoxy resin having a polyoxyalkylene chain; a second epoxy resin different from the first epoxy resin; a thermoplastic resin having a weight average molecular weight of 300,000 or less, and having a reactive functional group; at least one selected from the group consisting of a curing agent and a curing accelerator; and an inorganic filler.Type: GrantFiled: July 12, 2019Date of Patent: August 8, 2023Assignee: NAGASE CHEMTEX CORPORATIONInventors: Takayuki Hashimoto, Eiichi Nomura, Katsushi Kan, Daisuke Mori, Yosuke Oi, Yukio Yada, Takashi Hiraoka, Takeyuki Kitagawa
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Publication number: 20230002669Abstract: An aqueous sol used in CO2 foam flooding, one of EOR flooding methods for recovering crude oil by injection into the oil reservoir of an onshore or offshore oil field, the aqueous sol increasing foam stability even over a substantial period of time, at high temperatures and pressures, and in salt water, thus improving crude oil recovery rate. The aqueous sol for increasing stability of froth or emulsion in a mixture containing carbon dioxide, water, and oil in CO2 foam flooding of EOR, the sol including silica particles having an average particle diameter of 1 to 100 nm as measured by dynamic light scattering and having surfaces at least partially coated with a silane compound having a hydrolyzable group, the silica particles serving as a dispersoid and dispersed in an aqueous solvent having a pH of 1.0 to 6.0 serving as a dispersion medium.Type: ApplicationFiled: November 26, 2020Publication date: January 5, 2023Applicants: INPEX CORPORATION, HIROSAKI UNIVERSITY, NISSAN CHEMICAL CORPORATIONInventors: Takashi HIRAOKA, Hideharu YONEBAYASHI, Yoshihiro MIYAGAWA, Masanobu SAGISAKA, Masashi ABE
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Publication number: 20210403765Abstract: A curable resin composition includes: a first epoxy resin having a polyoxyalkylene chain; a second epoxy resin different from the first epoxy resin; a thermoplastic resin having a weight average molecular weight of 300,000 or less, and having a reactive functional group; at least one selected from the group consisting of a curing agent and a curing accelerator; and an inorganic filler.Type: ApplicationFiled: July 12, 2019Publication date: December 30, 2021Applicant: NAGASE CHEMTEX CORPORATIONInventors: Takayuki HASHIMOTO, Eiichi NOMURA, Katsushi KAN, Daisuke MORI, Yosuke OI, Yukio YADA, Takashi HIRAOKA, Takeyuki KITAGAWA
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Publication number: 20210054187Abstract: An object of the present invention is to provide a resin composition for encapsulation capable of suppressing warpage even when a large-area substrate is encapsulated. In order to solve the above problems, a resin composition for encapsulating an electronic member containing an epoxy resin (A), a compound having a polyalkylene glycol chain (B), and an inorganic filler (C) is provided. Thus, even when a large-area substrate is encapsulated, an effect of suppressing the warpage can be obtained.Type: ApplicationFiled: January 23, 2019Publication date: February 25, 2021Inventors: Yosuke OI, Takashi HIRAOKA
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Patent number: 9726976Abstract: A photoresist composition comprising an acid generator and a resin comprising a structural unit derived from a monomer represented by the formula (1): wherein R1 represents a hydrogen atom etc., R2 represents a hydrogen atom or a C1-C4 alkyl group, A1 represents a single bond etc., and B1 represents a group represented by the formula (1a): wherein R3, R4 and R5 each independently represents a C1-C16 aliphatic hydrocarbon group and R4 and R5 can be bonded each other to form a C3-C18 ring together with the carbon atom to which R4 and R5 are bonded, a C4-C20 saturated cyclic group having a lactone structure or a C5-C20 saturated cyclic hydrocarbon group having at least one hydroxyl group.Type: GrantFiled: September 14, 2010Date of Patent: August 8, 2017Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Koji Ichikawa, Hiromu Sakamoto, Masako Sugihara, Takashi Hiraoka
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Patent number: 9671693Abstract: A resist composition contains; (A1) a resin having a structural unit represented by the formula (aa) and at least one structural unit selected from the group consisting of a structural unit represented by the formula (a1-1) and a structural unit represented by the formula (a1-2); (A2) a resin which does not have the structural unit represented by the formula (aa) and which is insoluble or poorly soluble in aqueous alkali solution, but becomes soluble in aqueous alkali solution by the action of acid; and (B) an acid generator, wherein Raa1, Aaa1, Raa2, La1, La2, Ra4, Ra5, Ra6, Ra7, m1, n1 and n1? are defined in the specification.Type: GrantFiled: December 14, 2011Date of Patent: June 6, 2017Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Koji Ichikawa, Takashi Hiraoka, Shingo Fujita
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Patent number: 9487701Abstract: A liquid crystal composition satisfies at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a large optical anisotropy, a large positive dielectric anisotropy, a large specific resistance, a large elastic constant, a high stability to ultraviolet light and heat, or is suitably balanced between at least two of the characteristics. An AM device has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition includes a specific two-ring compound having a high maximum temperature and a large elastic constant as a first component, a specific compound having a large dielectric anisotropy as a second component, and has a nematic phase. The liquid crystal display device contains this composition.Type: GrantFiled: September 1, 2010Date of Patent: November 8, 2016Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Norikatsu Hattori, Takashi Hiraoka, Taketo Maeda, Masayuki Saito
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Patent number: 9453163Abstract: To provide a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature of a nematic phase, low minimum temperature of the nematic phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat, or to provide a liquid crystal composition having suitable balance regarding at least two of the characteristics; and to provide an AM device having short response time, large voltage holding ratio, large contrast ratio, long service life and so forth. The liquid crystal composition has a nematic phase and contains a specific compound having large dielectric anisotropy as a first component, may contain a specific compound having high maximum temperature or small viscosity as a second component and a specific compound having high maximum temperature or large dielectric anisotropy as a third component; and a liquid crystal display device including the liquid crystal composition.Type: GrantFiled: February 22, 2013Date of Patent: September 27, 2016Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Yoshimasa Furusato, Taketo Maeda, Takashi Hiraoka
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Patent number: 9429841Abstract: A resist composition having a resin having a structural unit represented by the formula (I), a resin being insoluble or poorly soluble in alkali aqueous solution, but becoming soluble in an alkali aqueous solution by the action of an acid and not including the structural unit represented by the formula (I), and an acid generator, wherein R1, A1, A13, A14, X12, Rb1, Rb2, Lb1, ring Wb1, Rb3, Rb4, m and Z1+ are defined in the specification.Type: GrantFiled: July 18, 2012Date of Patent: August 30, 2016Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Koji Ichikawa, Takashi Hiraoka, Hiromu Sakamoto
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Patent number: 9405187Abstract: The present invention is a salt represented by the formula (I) wherein R1 and R2 independently represent a fluorine atom or a C1 to C6 perfluoroalkyl group; L1 represents a C1 to C17 divalent saturated hydrocarbon group, a —CH2— contained in the saturated hydrocarbon group may be replaced by —O— or —CO—; ring W1 represents a C2 to C36 heterocycle; R3 represents a hydrogen atom or a C1 to C12 hydrocarbon group, a —CH2— contained in the hydrocarbon group may be replaced by —O— or —CO—; R4 in each occurrence independently represent a C1 to C6 hydrocarbon group, a —CH2— contained in the hydrocarbon group may be replaced by —O— or —CO—; m represents an integer of 0 to 6; and Z+ represents an organic cation.Type: GrantFiled: June 28, 2011Date of Patent: August 2, 2016Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Takashi Hiraoka, Hiromu Sakamoto, Koji Ichikawa
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Publication number: 20150225647Abstract: A liquid crystal composition and an AM liquid crystal display device are described. The liquid crystal composition contains a specific compound having a high maximum temperature or a large positive dielectric anisotropy as a first component and a specific compound having a large negative dielectric anisotropy and a low minimum temperature as a second component, may also contain a specific compound having a small viscosity or a large maximum temperature as a third component, and has a positive dielectric anisotropy. The AM liquid crystal display device includes the composition.Type: ApplicationFiled: September 6, 2013Publication date: August 13, 2015Inventors: Yoshimasa Furusato, Yoshinari Matsumura, Takashi Hiraoka, Toshiki Asakura, Kazuhiko Saigusa
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Publication number: 20150062495Abstract: To provide a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature of a nematic phase, low minimum temperature of the nematic phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat, or to provide a liquid crystal composition having suitable balance regarding at least two of the characteristics; and to provide an AM device having short response time, large voltage holding ratio, large contrast ratio, long service life and so forth. The liquid crystal composition has a nematic phase and contains a specific compound having large dielectric anisotropy as a first component, may contain a specific compound having high maximum temperature or small viscosity as a second component and a specific compound having high maximum temperature or large dielectric anisotropy as a third component; and a liquid crystal display device including the liquid crystal composition.Type: ApplicationFiled: February 22, 2013Publication date: March 5, 2015Inventors: Yoshimasa Furusato, Taketo Maeda, Takashi Hiraoka
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Patent number: 8916330Abstract: The present invention provides a resist composition giving a resist pattern excellent in CD uniformity and focus margin. A chemically amplified photoresist composition comprises a resin (A) and an acid generator (B), and the resin (A) contains, as a part or an entirety thereof, a copolymer (A1) which is obtained by polymerizing at least: a (meth)acrylic monomer (a1) having C5-20 alicyclic hydrocarbon group which becomes soluble in an aqueous alkali solution by the action of an acid; a (meth)acrylic monomer (a2) having a hydroxy group-containing adamantyl group; and a (meth)acrylic monomer (a3) having a lactone ring, and the copolymer (A1) has a weight-average molecular weight of 2500 or more and 5000 or less, and a content of the copolymer (A1) is not less than 50 parts by mass with respect to 100 parts by mass of the resin (A).Type: GrantFiled: June 23, 2010Date of Patent: December 23, 2014Assignee: Sumitomo Chemical Company, LimitedInventors: Koji Ichikawa, Takashi Hiraoka
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Patent number: 8883394Abstract: The present invention provides a resist composition giving a resist pattern excellent in CD uniformity and focus margin. A chemically amplified photoresist composition comprises a resin (A) and an acid generator (B), and the resin (A) contains, as a part or an entirety thereof, a copolymer (A1) which is obtained by polymerizing at least: a (meth)acrylic monomer (a1) having C5-20 alicyclic hydrocarbon group which becomes soluble in an aqueous alkali solution by the action of an acid; a (meth)acrylic monomer (a2) having a hydroxy group-containing adamantyl group; and a (meth)acrylic monomer (a3) having a lactone ring, and the copolymer (A1) has a weight-average molecular weight of 2500 or more and 5000 or less, and a content of the copolymer (A1) is not less than 50 parts by mass with respect to 100 parts by mass of the resin (A).Type: GrantFiled: June 23, 2010Date of Patent: November 11, 2014Assignee: Sumitomo Chemical Company, LimitedInventors: Koji Ichikawa, Takashi Hiraoka
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Patent number: 8718237Abstract: A mobile phone 100 with music reproduction function comprising a reproduction unit 106 that reproduces music data and a ring tone which are recorded in a music data recording medium 105 and a ring tone, a communication unit 108 that detects an incoming call from outside and a control unit 103 that instructs the reproduction unit 106 to perform a fade-out process of reproducing music data and to perform a fade-in process of outputting a ring tone when the communication unit 108 detects an incoming call while the reproduction unit 106 is reproducing music data.Type: GrantFiled: December 3, 2010Date of Patent: May 6, 2014Assignee: Panasonic CorporationInventors: Kenji Tagawa, Takashi Hiraoka
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Patent number: 8709699Abstract: A resist composition having a resin having a structural unit represented by the formula (I), a resin being insoluble or poorly soluble in alkali aqueous solution, but becoming soluble in an alkali aqueous solution by the action of an acid and not including the structural unit represented by the formula (I), and an acid generator represented by the formula (II), wherein R1, A1, A13, A14, X12, Q1, Q2, L1, ring W, Rf1 and Rf2, n and Z+ are defined in the specification.Type: GrantFiled: July 18, 2012Date of Patent: April 29, 2014Assignee: Sumitomo Chemical Company, LimitedInventors: Koji Ichikawa, Takashi Hiraoka, Mitsuyoshi Ochiai
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Patent number: 8663899Abstract: A resist composition having a resin having a structural unit represented by the formula (I), a resin being insoluble or poorly soluble in alkali aqueous solution, but becoming soluble in an alkali aqueous solution by the action of an acid and not including the structural unit represented by the formula (I), and an acid generator, wherein R1, A1, R2, Rb1, Rb2, Lb1, ring Wb1, Rb3, Rb4, and Z1+ are defined in the specification.Type: GrantFiled: July 18, 2012Date of Patent: March 4, 2014Assignee: Sumitomo Chemical Company, LimitedInventors: Koji Ichikawa, Takashi Hiraoka, Hiromu Sakamoto