Patents by Inventor Akira Okuno
Akira Okuno 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: 20250145897Abstract: Provided is a method for producing chemical products, including: a pyrolysis step of obtaining a first gas fraction, a pyrolysis oil, and a residual fraction by pyrolysis of a crushed material of a waste material including waste tires; a hydrogenolysis step of obtaining a second gas fraction, a light fraction with a boiling point of 350° C. or lower, and a heavy fraction with a boiling point higher than 350° C. by hydrogenolysis of a raw material oil containing at least a part of the pyrolysis oil; and a steam-cracking step of obtaining a chemical product by steam cracking of a steam-cracking raw material oil containing at least a part of the light fraction.Type: ApplicationFiled: January 17, 2023Publication date: May 8, 2025Applicants: ENEOS Corporation, Bridgestone CorporationInventors: Masahide KOBAYASHI, Naoko URUSHIZAKO, Rina IWAMOTO, Ryoji IDA, Masahiro HOJO, Seiichi TAHARA, Akira OKUNO, Marino KUNO ITODA
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Publication number: 20250145739Abstract: Provided is a method of decomposing a crosslinked rubber that includes: a first decomposition step of decomposing a crosslinked rubber containing a diene rubber, using a catalyst represented by the following general formula (1), (2), or (3), where M is ruthenium, molybdenum, or the like, X1, X2, L1, L2, and L3 each independently represent a ligand, R1, R2, and R3 each independently represent hydrogen, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aryl group, or the like (these groups may be substituted by one or more alkyl groups, halogens, alkoxy groups, or the like), L1 and L2, R1 and R2, and L1 and R1 may respectively bond with each other to form rings; and a second decomposition step of pyrolyzing a decomposition product obtained by the first decomposition step at a temperature of 300° C. to 950° C. in the presence of a catalyst.Type: ApplicationFiled: February 6, 2023Publication date: May 8, 2025Applicants: BRIDGESTONE CORPORATION, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Masahiro HOJO, Akira OKUNO, Marino KUNO, Norihisa FUKAYA, Satpriyo Putro WAHYU, Jun-Chul CHOI, Faried MIFTAH, Hiroshi YAMASHITA, Tadahiro FUJITANI, Makiko HATORI, Makoto SUGIKI
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Publication number: 20250136529Abstract: Provided is a method of decomposing a crosslinked rubber that includes: a first decomposition step of decomposing a crosslinked rubber containing a diene rubber, using a catalyst represented by the following general formula (1), (2), or (3), where Mis ruthenium, molybdenum, etc., X1, X2, L1, L2, and L3 each independently represent a ligand, R1, R2, and R3 each independently represent hydrogen, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aryl group, etc. (these groups may be substituted by one or more alkyl groups, halogens, alkoxy groups, etc.), L1 and L2, R1 and R2, and L1 and R1 may respectively bond with each other to form rings; and a second decomposition step of pyrolyzing a decomposition product obtained by the first decomposition step under an inert gas atmosphere and in the absence of a catalyst at a temperature of 300° C. to 450° C.Type: ApplicationFiled: February 6, 2023Publication date: May 1, 2025Applicants: BRIDGESTONE CORPORATION, TOHOKU UNIVERSITY, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Masahiro HOJO, Akira OKUNO, Marino KUNO, Toshiaki YOSHIOKA, Shogo KUMAGAI, Norihisa FUKAYA, Satpriyo Putro WAHYU, Jun-Chul CHOI, Faried MIFTAH, Hiroshi YAMASHITA, Tadahiro FUJITANI, Makiko HATORI, Makoto SUGIKI
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Publication number: 20250136530Abstract: Provided is a method of decomposing a crosslinked rubber that includes: a first decomposition step of decomposing a crosslinked rubber containing a diene rubber, using a catalyst represented by the following general formula (1), (2), or (3), where M is ruthenium, molybdenum, etc., X1, X2, L1, L2, and L3 each independently represent a ligand, R1, R2, and R3 each independently represent hydrogen, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aryl group, etc. (these groups may be substituted by one or more alkyl groups, halogens, alkoxy groups, etc.), L1 and L2, R1 and R2, and L1 and R1 may respectively bond with each other to form rings; and a second decomposition step of pyrolyzing a decomposition product obtained by the first decomposition step under an inert gas atmosphere and in the absence of a catalyst at a temperature of 600° C. to 950° C.Type: ApplicationFiled: February 6, 2023Publication date: May 1, 2025Applicants: BRIDGESTONE CORPORATION, TOHOKU UNIVERSITY, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Masahiro HOJO, Akira OKUNO, Marino KUNO, Toshiaki YOSHIOKA, Shogo KUMAGAI, Norihisa FUKAYA, Satpriyo Putro WAHYU, Jun-Chul CHOI, Faried MIFTAH, Hiroshi YAMASHITA, Tadahiro FUJITANI, Makiko HATORI, Makoto SUGIKI
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Publication number: 20250136780Abstract: Provided is a method of decomposing a crosslinked rubber that can improve monomer yield. The method of decomposing a crosslinked rubber includes: a first decomposition step of pyrolyzing a crosslinked rubber containing a rubber component that includes a diene-based rubber at not lower than 150° C. and not higher than 400° C.; and a second decomposition step of further pyrolyzing a decomposition product obtained through the first decomposition step at not lower than 600° C. and not higher than 950° C. in an inert gas atmosphere and in the absence of a catalyst. The first decomposition step is preferably performed in an inert gas atmosphere.Type: ApplicationFiled: February 6, 2023Publication date: May 1, 2025Applicants: BRIDGESTONE CORPORATION, TOHOKU UNIVERSITYInventors: Masahiro HOJO, Akira OKUNO, Marino KUNO, Hironori MORISHITA, Masahiro HOMMA, Toshiaki YOSHIOKA, Shogo KUMAGAI
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Publication number: 20250129291Abstract: Provided is a method of decomposing a crosslinked rubber that can improve monomer yield. The method of decomposing a crosslinked rubber includes: a first decomposition step of pyrolyzing a crosslinked rubber containing a rubber component that includes a diene-based rubber at not lower than 150° C. and not higher than 400° C.; and a second decomposition step of further pyrolyzing a decomposition product obtained through the first decomposition step at not lower than 300° C. and not higher than 450° C. in an inert gas atmosphere and in the absence of a catalyst. The first decomposition step is preferably performed in an inert gas atmosphere.Type: ApplicationFiled: February 6, 2023Publication date: April 24, 2025Applicants: BRIDGESTONE CORPORATION, TOHOKU UNIVERSITYInventors: Masahiro HOJO, Akira OKUNO, Marino KUNO, Hironori MORISHITA, Masahiro HOMMA, Toshiaki YOSHIOKA, Shogo KUMAGAI
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Publication number: 20250115732Abstract: The present disclosure addresses the problem of providing a method for decomposing a crosslinked rubber that can improve monomer yield. The solution is a method of decomposing a crosslinked rubber that includes: a first decomposition step of pyrolyzing a crosslinked rubber containing a diene rubber at a temperature of 150° C. or more and 400° C. or less, and a second decomposition step of pyrolyzing a decomposition product obtained by the first decomposition step under an inert gas atmosphere and in the presence of a catalyst at a temperature of 300° C. or more and 950° C. or less. Preferably 80 mass % or more of the diene rubber in the crosslinked rubber is decomposed to diene oligomers having a weight-average molecular weight of 100 to 50,000 via the first decomposition step.Type: ApplicationFiled: February 6, 2023Publication date: April 10, 2025Applicants: BRIDGESTONE CORPORATION, TOHOKU UNIVERSITY, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Masahiro HOJO, Akira OKUNO, Marino KUNO, Masahiro HOMMA, Toshiaki YOSHIOKA, Shogo KUMAGAI, Norihisa FUKAYA, Satpriyo Putro WAHYU, Jun-Chul CHOI, Faried MIFTAH, Hiroshi YAMASHITA, Tadahiro FUJITANI
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Publication number: 20250091882Abstract: Provided is a method for producing chemical products and carbides, including: a pyrolysis step of obtaining a first gas fraction, a pyrolysis oil, and a residual fraction by pyrolysis of a crushed material of waste tires; a carbide recovery step of recovering a carbide from the residual fraction; a hydrogenolysis step of obtaining a second gas fraction, a light fraction, and a heavy fraction by hydrogenolysis of a raw material oil containing at least a part of the pyrolysis oil; and a steam-cracking step of obtaining a chemical product and a raw material for producing a carbide by steam cracking of a steam-cracking raw material oil containing at least a part of the light fraction.Type: ApplicationFiled: January 17, 2023Publication date: March 20, 2025Applicants: ENEOS Corporation, Bridgestone CorporationInventors: Masahide KOBAYASHI, Naoko URUSHIZAKO, Rina IWAMOTO, Ryoji IDA, Masahiro HOJO, Seiichi TAHARA, Akira OKUNO, Marino KUNO ITODA
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Patent number: 12230421Abstract: A hermetic terminal includes a metal outer ring made of a low resistance conductor having a through hole, a lead made of a low resistance conductor inserted in the through hole of the metal outer ring, and an insulating material made of high expansion glass for sealing the metal outer ring and the lead.Type: GrantFiled: July 14, 2020Date of Patent: February 18, 2025Assignee: SCHOTT Japan CorporationInventors: Makoto Tanaka, Hiroshi Kato, Tetsushi Morikawa, Akira Okuno
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Publication number: 20250011652Abstract: Provided is a pretreatment method for rubber, which, in the pyrolysis treatment for used rubber, can reduce the odor during pyrolysis, effectively reduce the sulfur and/or nitrogen content in the resulting pyrolysis products, which is particularly easy to volatilize, and further reduce the odor of the oil obtained from the pyrolysis. This pretreatment method for rubber is a pretreatment method for rubber, in which sulfur crosslinked rubber is pretreated prior to pyrolysis treatment, characterized in that: the method includes a holding process in which the sulfur crosslinked rubber is held for minutes or longer under conditions satisfying the prescribed formulas (1) and (2) to obtain pretreated rubber; and that in the holding process, when the ambient pressure P is atmospheric pressure, the holding is performed under an air flow of inert gas.Type: ApplicationFiled: October 14, 2022Publication date: January 9, 2025Applicant: BRIDGESTONE CORPORATIONInventors: Akira OKUNO, Takayuki NASHI, Marino KUNO, Masahiro HOJO
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Publication number: 20240262738Abstract: A biocompatible glass substrate with through electrodes includes a glass plate of a biocompatible glass, and through electrodes made of a biocompatible metal that are provided by penetrating the glass plate. A biocompatible electronic device using this is the biocompatible electronic device including a biocompatible glass substrate with through electrode having a glass plate of a biocompatible glass, and through electrodes made of a biocompatible metal provided by penetrating the glass plate, and an electric/electronic device sealed onto the above described glass plate and is electrically connected to the above described through electrodes, and has bumps for connection on the through electrodes of the biocompatible electronic device.Type: ApplicationFiled: April 17, 2024Publication date: August 8, 2024Applicant: Schott Japan CorporationInventors: Yutaka ONEZAWA, Akira OKUNO, Kazuhito MIYAWAKI
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Publication number: 20220230787Abstract: A hermetic terminal includes a metal outer ring made of a low resistance conductor having a through hole, a lead made of a low resistance conductor inserted in the through hole of the metal outer ring, and an insulating material made of high expansion glass for sealing the metal outer ring and the lead.Type: ApplicationFiled: July 14, 2020Publication date: July 21, 2022Inventors: Makoto TANAKA, Hiroshi KATO, Tetsushi MORIKAWA, Akira OKUNO
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Publication number: 20220089474Abstract: A biocompatible glass substrate with through electrodes includes a glass plate of a biocompatible glass, and through electrodes made of a biocompatible metal that are provided by penetrating the glass plate. A biocompatible electronic device using this is the biocompatible electronic device including a biocompatible glass substrate with through electrode having a glass plate of a biocompatible glass, and through electrodes made of a biocompatible metal provided by penetrating the glass plate, and an electric/electronic device sealed onto the above described glass plate and is electrically connected to the above described through electrodes, and has bumps for connection on the through electrodes of the biocompatible electronic device.Type: ApplicationFiled: November 18, 2019Publication date: March 24, 2022Applicant: Schott Japan CorporationInventors: Yutaka ONEZAWA, Akira OKUNO, Kazuhito MIYAWAKI
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Patent number: 10834835Abstract: A hermetic terminal for a hard disk device (HDD device) that has an excellent gas barrier property and can be assembled in a small number of man-hours, and a hard disk device are provided. The hermetic terminal for an HDD device includes a metal eyelet, insulating glass which seals the metal eyelet on a side of an inner diameter of the metal eyelet, and a lead sealed by the insulating glass to pass therethrough. The lead includes a contact made of a conductive elastic material.Type: GrantFiled: June 20, 2017Date of Patent: November 10, 2020Assignee: SCHOTT Japan CorporationInventors: Akira Okuno, Tetsushi Morikawa
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Patent number: 10580602Abstract: A hermetic terminal for a high-capacity relay includes: a metal container provided with a through hole; a pipe lead inserted through the through hole; an insulating glass hermetically sealing the metal container and the pipe lead; and a terminal base passing through and hermetically secured to the pipe lead and made of a low-resistance metal.Type: GrantFiled: September 29, 2016Date of Patent: March 3, 2020Assignee: SCHOTT Japan CorporationInventors: Tetsushi Morikawa, Akira Okuno, Susumu Nishiwaki, Yutaka Onezawa
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Patent number: 10468801Abstract: A terminal that can be simply joined in the atmosphere; an electrical apparatus including the terminal; and a method of attaching a terminal to a housing made of a metal material by which a passivation film is readily formed on a surface thereof are provided. A terminal can be fixedly adhered to a housing, and includes: a metal outer ring; a lead penetrating through the metal outer ring; and an insulating material providing sealing between the metal outer ring and the lead. The metal outer ring has a joint edge to be joined to the housing. A coating layer turning into a liquid phase at a temperature lower than a melting temperature of the housing is provided at least in the joint edge.Type: GrantFiled: August 8, 2017Date of Patent: November 5, 2019Assignee: SCHOTT Japan CorporationInventors: Akira Okuno, Tetsushi Morikawa, Tarou Hirai, Kazuhito Miyawaki, Masahiro Taketomi, Yoshinaga Hamaguchi
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Publication number: 20190313539Abstract: A hermetic terminal for a hard disk device (HDD device) that has an excellent gas barrier property and can be assembled in a small number of man-hours, and a hard disk device are provided. The hermetic terminal for an HDD device includes a metal eyelet, insulating glass which seals the metal eyelet on a side of an inner diameter of the metal eyelet, and a lead sealed by the insulating glass to pass therethrough. The lead includes a contact made of a conductive elastic material.Type: ApplicationFiled: June 20, 2017Publication date: October 10, 2019Inventors: Akira OKUNO, Tetsushi MORIKAWA
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Patent number: 10249443Abstract: According to a hermetic terminal based on the present invention, a hermetic terminal (10) to be hermetically fixed to an aluminum electrolytic capacitor (20) includes: a base (11) which has a through hole, is to be attached to a case (16) of the aluminum electrolytic capacitor (20), and is made of a composite material having electrical conductivity; at least one lead (12) which is inserted into the through hole of the base (11), and is made of a composite material having electrical conductivity; and an insulating glass (13) which hermetically seals a gap between the base (11) and the lead (12). Surfaces of portions of the base (11) and the lead (12) which come into contact with an electrolytic solution within the case (16) are composed of a metal material having corrosion resistance to the electrolytic solution.Type: GrantFiled: June 2, 2016Date of Patent: April 2, 2019Assignee: SCHOTT Japan CorporationInventors: Hiroki Honda, Susumu Nishiwaki, Masahiro Taketomi, Akira Okuno, Tarou Hirai, Ko Mamiya
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Publication number: 20190036255Abstract: A terminal that can be simply joined in the atmosphere; an electrical apparatus including the terminal; and a method of attaching a terminal to a housing made of a metal material by which a passivation film is readily formed on a surface thereof are provided. A terminal can be fixedly adhered to a housing, and includes: a metal outer ring; a lead penetrating through the metal outer ring, and an insulating material providing sealing between the metal outer ring and the lead. The metal outer ring has a joint edge to be joined to the housing. A coating layer turning into a liquid phase at a temperature lower than a melting temperature of the housing is provided at least in the joint edge.Type: ApplicationFiled: August 8, 2017Publication date: January 31, 2019Inventors: Akira OKUNO, Tetsushi MORIKAWA, Tarou HIRAI, Kazuhito MIYAWAKI, Masahiro TAKETOMI, Yoshinaga HAMAGUCHI
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Publication number: 20180286614Abstract: A hermetic terminal for a high-capacity relay includes: a metal container provided with a through hole; a pipe lead inserted through the through hole; an insulating glass hermetically sealing the metal container and the pipe lead; and a terminal base passing through and hermetically secured to the pipe lead and made of a low-resistance metal.Type: ApplicationFiled: September 29, 2016Publication date: October 4, 2018Inventors: Tetsushi MORIKAWA, Akira OKUNO, Susumu NISHIWAKI, Yutaka ONEZAWA