Patents by Inventor Junichi Kawakami
Junichi Kawakami 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: 11139116Abstract: A gel electrolytic capacitor that can further improve withstand voltage is provided. The gel electrolytic capacitor includes: an anode foil; a cathode foil; and a gel electrolyte disposed between the anode foil and the cathode foil. The gel electrolyte consists of a polymer having three-dimensional (3D) network structure and an electrolyte solution held in said polymer. The polymer is formed by polymerizing 2-hydroxyethyl methacrylate or methacrylic acid. The electrolyte solution includes amines or quaternary cyclic amidinium.Type: GrantFiled: September 25, 2018Date of Patent: October 5, 2021Assignee: Nippon Chemi-Con CorporationInventor: Junichi Kawakami
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Publication number: 20200258691Abstract: A gel electrolytic capacitor that can further improve withstand voltage is provided. The gel electrolytic capacitor includes: an anode foil; a cathode foil; and a gel electrolyte disposed between the anode foil and the cathode foil. The gel electrolyte consists of a polymer having three-dimensional (3D) network structure and an electrolyte solution held in said polymer. The polymer is formed by polymerizing 2-hydroxyethyl methacrylate or methacrylic acid. The electrolyte solution includes amines or quaternary cyclic amidinium.Type: ApplicationFiled: September 25, 2018Publication date: August 13, 2020Inventor: Junichi KAWAKAMI
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Patent number: 10364199Abstract: A propane production method includes a hydrogenation reaction step of hydrogenation-reacting crude propylene and hydrogen in a presence of a catalyst to obtain gaseous crude propane containing impurities; and an impurity removal step of removing the impurities contained in the gaseous crude propane obtained in the hydrogenation reaction step to obtain purified propane. The impurity removal step includes an adsorptive removal stage of adsorbing and removing water, ethane and propylene contained as impurities in the gaseous crude propane by adsorption treatment in which the gaseous crude propane is brought into contact with an adsorbent, and a separation removal stage of separating and removing hydrogen, oxygen, nitrogen and methane contained as impurities in the crude propane after the adsorption treatment by partial condensation or distillation of crude propane after the adsorption treatment in the adsorptive removal stage.Type: GrantFiled: January 21, 2016Date of Patent: July 30, 2019Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Akihiro Kuwana, Junichi Kawakami, Shuji Tsuno
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Patent number: 9945516Abstract: A method provide high-purity nitric oxide by preserving quality of the nitric oxide by suitably inhibiting the disproportionation reaction of the nitric oxide that is transported in a state of being stored in a high-pressure gas cylinder, and decreasing the amount of nitrous oxide and nitrogen dioxide that are produced during the transportation. When the nitric oxide is transported in a state of being stored in the high-pressure gas cylinder, the nitric oxide is filled into the high-pressure gas cylinder at a gauge pressure between 1.96 MPa to 3.5 MPa to be stored, and is transported in a state in which the exterior surface temperature of the high-pressure gas cylinder is held in a range from ?15° C. to 5° C.Type: GrantFiled: September 4, 2013Date of Patent: April 17, 2018Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Junichi Kawakami, Akira Okabe, Masahiro Komatsu, Yukiyoshi Sawatani
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Publication number: 20170349506Abstract: A propane production method includes a hydrogenation reaction step of hydrogenation-reacting crude propylene and hydrogen in a presence of a catalyst to obtain gaseous crude propane containing impurities; and an impurity removal step of removing the impurities contained in the gaseous crude propane obtained in the hydrogenation reaction step to obtain purified propane. The impurity removal step includes an adsorptive removal stage of adsorbing and removing water, ethane and propylene contained as impurities in the gaseous crude propane by adsorption treatment in which the gaseous crude propane is brought into contact with an adsorbent, and a separation removal stage of separating and removing hydrogen, oxygen, nitrogen and methane contained as impurities in the crude propane after the adsorption treatment by partial condensation or distillation of crude propane after the adsorption treatment in the adsorptive removal stage.Type: ApplicationFiled: January 21, 2016Publication date: December 7, 2017Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Akihiro KUWANA, Junichi KAWAKAMI, Shuji TSUNO
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Patent number: 9589734Abstract: A high voltage proof solid electrolytic capacitor that can prevent deterioration of voltage proof property due to lead-free reflow etc. and a manufacturing method thereof are provided. A capacitor element having an anode and cathode electrode foils wound via a separator is impregnated with a dispersion comprising conductive polymer particles or powder and a solvent to form a solid electrolyte layer consisting of a conductive polymer, and the voids inside the capacitor element having the solid electrolyte layer formed are filled with an ion-conducting substance comprising a mixed solvent comprising ethylene glycol and ?-butyrolactone together with a solute selected from at least one type of an ammonium salt, a quaternary ammonium salt, a quaternized amidinium salt, and an amine salt of an organic acid, an inorganic acid, and a composite compound between organic acid and inorganic acids to obtain a solid electrolytic capacitor.Type: GrantFiled: July 30, 2013Date of Patent: March 7, 2017Assignee: NIPPON CHEMI-CON CORPORATIONInventors: Kazuya Koseki, Kouichi Kuroda, Junichi Kawakami, Masao Sakakura
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Patent number: 9556089Abstract: [PROBLEM] To provide an industrially advantageous method and system that are simple and have superior energy efficiency for obtaining high-purity propane from low-purity propane. [SOLUTION] Water, carbon dioxide, at least one of ethane and propylene, and at least one of isobutane and normal butane present in low-purity propane in a gaseous phase are adsorbed by means of a zeolite molecular sieve that preferentially adsorbs water and carbon dioxide over propane, an activated carbon molecular sieve that preferentially adsorbs ethane and propylene over propane, and activated carbon that preferentially adsorbs isobutane and normal butane over propane. Propane is condensed in a state in which nitrogen and oxygen are maintained in a gaseous state by introducing the low-purity propane in a gaseous phase into a partial condenser. Nitrogen and oxygen in the gaseous phase are extracted from the partial condenser.Type: GrantFiled: October 3, 2012Date of Patent: January 31, 2017Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Junichi Kawakami, Shinichi Tai, Saori Tanaka
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Patent number: 9496092Abstract: Provided is a flame-retardant electrolytic capacitor which is capable of maintaining flame-retardant effect even after a prolonged period of time. This is an electrolytic capacitor comprising an anode foil that is provided with an oxide film on the surface, a cathode foil, a separator, and an electrolytic solution that contains a solute in a solvent, wherein a phosphoric acid ester amide represented by the following general formula (1) is contained in the electrolytic solution: in which n is 1 or 2, and R1 and R2 each independently represent a linear or branched alkyl group having 1 to 10 carbon atoms, and Rf represents a linear or branched fluoroalkyl group having 1 to 10 carbon atoms or a linear or branched alkyl group having 1 to 10 carbon atoms).Type: GrantFiled: July 1, 2013Date of Patent: November 15, 2016Assignees: NIPPON CHEMI-CON CORPORATION, TOSOH F-TECH, INC.Inventors: Masashi Ozawa, Junichi Kawakami, Hideyuki Mimura, Hisao Eguchi
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Publication number: 20160003414Abstract: A method provide high-purity nitric oxide by preserving quality of the nitric oxide by suitably inhibiting the disproportionation reaction of the nitric oxide that is transported in a state of being stored in a high-pressure gas cylinder, and decreasing the amount of nitrous oxide and nitrogen dioxide that are produced during the transportation. When the nitric oxide is transported in a state of being stored in the high-pressure gas cylinder, the nitric oxide is filled into the high-pressure gas cylinder at a gauge pressure between 1.96 MPa to 3.5 MPa to be stored, and is transported in a state in which the exterior surface temperature of the high-pressure gas cylinder is held in a range from ?15° C. to 5° C.Type: ApplicationFiled: September 4, 2013Publication date: January 7, 2016Inventors: Junichi Kawakami, Akira Okabe, Masahiro Komatsu, Yukiyoshi Sawatani
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Publication number: 20150325381Abstract: Provided is a flame-retardant electrolytic capacitor which is capable of maintaining flame-retardant effect even after a prolonged period of time. This is an electrolytic capacitor comprising an anode foil that is provided with an oxide film on the surface, a cathode foil, a separator, and an electrolytic solution that contains a solute in a solvent, wherein a phosphoric acid ester amide represented by the following general formula (1) is contained in the electrolytic solution: in which n is 1 or 2, and R1 and R2 each independently represent a linear or branched alkyl group having 1 to 10 carbon atoms, and Rf represents a linear or branched fluoroalkyl group having 1 to 10 carbon atoms or a linear or branched alkyl group having 1 to 10 carbon atoms).Type: ApplicationFiled: July 1, 2013Publication date: November 12, 2015Inventors: Masashi Ozawa, Junichi Kawakami, Hideyuki Mimura, Hisao Eguchi
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Patent number: 9111685Abstract: A hydrophobic film is formed on the electrode foil surface by adding a straight-chain saturated dicarboxylic acid represented by the general formula: HOOC(CH2)nCOOH (wherein n indicates an integer from 9 to 11) to the electrolytic solution for medium/high-voltage electrolytic capacitor. Addition of a large amount of water to the electrolytic solution is allowed since this hydrophobic film suppresses the hydration reaction between the electrode foil and water. Further, it is possible to retain good lifespan property of the electrolytic capacitor in a medium/high-voltage electrolytic solution by having low specific resistance property and by suppressing the hydration decomposition of the electrode foil, wherein the electrolytic solution is azelaic acid, sebacic acid, 1-methyl-azelaic acid, 1,6-decanedicarboxylic acid, or a salt thereof dissolved in a solvent having ethylene glycol as the main component.Type: GrantFiled: March 25, 2011Date of Patent: August 18, 2015Assignee: NIPPON CHEMI-CON CORPORATIONInventors: Junichi Kawakami, Masao Sakakura, Masashi Ozawa
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Publication number: 20150213962Abstract: A high voltage proof solid electrolytic capacitor that can prevent deterioration of voltage proof property due to lead-free reflow etc. and a manufacturing method thereof are provided. A capacitor element having an anode and cathode electrode foils wound via a separator is impregnated with a dispersion comprising conductive polymer particles or powder and a solvent to form a solid electrolyte layer consisting of a conductive polymer, and the voids inside the capacitor element having the solid electrolyte layer formed are filled with an ion-conducting substance comprising a mixed solvent comprising ethylene glycol and ?-butyrolactone together with a solute selected from at least one type of an ammonium salt, a quaternary ammonium salt, a quaternized amidinium salt, and an amine salt of an organic acid, an inorganic acid, and a composite compound between organic acid and inorganic acids to obtain a solid electrolytic capacitor.Type: ApplicationFiled: July 30, 2013Publication date: July 30, 2015Inventors: Kazuya Koseki, Kouichi Kuroda, Junichi Kawakami, Masao Sakakura
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Patent number: 8913369Abstract: Disclosed are an aluminum electrolytic capacitor having low impedance properties and a long service life, and an electrolytic solution which enables to give such capacitor. The electrolytic solution contains a solvent containing water, a phosphorus oxoacid ion-generating compound which can generate a phosphorus oxoacid ion in an aqueous solution, and a chelating agent which can coordinate with aluminum to form an aqueous aluminum chelate complex. The electrolytic solution further contains a compound selected from the group consisting of azelaic acid and an azelaic acid salt, and a compound selected from the group consisting of formic acid, a formic acid salt, adipic acid, an adipic acid salt, glutaric acid and a glutaric acid salt. The content of azelaic acid and/or the azelaic acid salt is at least 0.03 moles per kg of the solvent.Type: GrantFiled: January 28, 2014Date of Patent: December 16, 2014Assignee: Nippon Chemi-Con CorporationInventors: Masao Sakakura, Junichi Kawakami, Kazuma Okura, Shingo Takeuchi, Masashi Ozawa, Kenji Tamamitsu
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Publication number: 20140343341Abstract: [PROBLEM] To provide an industrially advantageous method and system that are simple and have superior energy efficiency for obtaining high-purity propane from low-purity propane. [SOLUTION] Water, carbon dioxide, at least one of ethane and propylene, and at least one of isobutane and normal butane present in low-purity propane in a gaseous phase are adsorbed by means of a zeolite molecular sieve that preferentially adsorbs water and carbon dioxide over propane, an activated carbon molecular sieve that preferentially adsorbs ethane and propylene over propane, and activated carbon that preferentially adsorbs isobutane and normal butane over propane. Propane is condensed in a state in which nitrogen and oxygen are maintained in a gaseous state by introducing the low-purity propane in a gaseous phase into a partial condenser. Nitrogen and oxygen in the gaseous phase are extracted from the partial condenser.Type: ApplicationFiled: October 3, 2012Publication date: November 20, 2014Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Junichi Kawakami, Shinichi Tai, Saori Tanaka
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Patent number: 8785710Abstract: A method for purifying a paraffin from a source material containing a paraffin having 2 to 6 carbon atoms and an olefin having 2 to 6 carbon atoms includes a first step of bringing the source material into contact with a silver ion-containing solution (absorption liquid) at a predetermined temperature and pressure in an absorption column 1 and recovering a non-absorbed gas not absorbed by the absorption liquid while the olefin in the source material is preferentially absorbed by the absorption liquid, and a second step of desorbing and discharging a gas component from the absorption liquid having undergone the first step at a predetermined temperature and pressure in a desorption column 2. The first step and the second step are performed continuously in parallel while the absorption liquid is circulated between the first step and the second step.Type: GrantFiled: December 21, 2009Date of Patent: July 22, 2014Assignee: Sumitomo Seika Chemicals Co., Ltd.Inventors: Hiroaki Nago, Shinichi Tai, Junichi Kawakami, Hiroyuki Hata, Shigeru Morimoto
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Publication number: 20140133066Abstract: Disclosed are an aluminum electrolytic capacitor having low impedance properties and a long service life, and an electrolytic solution which enables to give such capacitor. The electrolytic solution contains a solvent containing water, a phosphorus oxoacid ion-generating compound which can generate a phosphorus oxoacid ion in an aqueous solution, and a chelating agent which can coordinate with aluminum to form an aqueous aluminum chelate complex. The electrolytic solution further contains a compound selected from the group consisting of azelaic acid and an azelaic acid salt, and a compound selected from the group consisting of formic acid, a formic acid salt, adipic acid, an adipic acid salt, glutaric acid and a glutaric acid salt. The content of azelaic acid and/or the azelaic acid salt is at least 0.03 moles per kg of the solvent.Type: ApplicationFiled: January 28, 2014Publication date: May 15, 2014Applicant: NIPPON CHEMI-CON CORPORATIONInventors: Masao SAKAKURA, Junichi KAWAKAMI, Kazuma OKURA, Shingo TAKEUCHI, Masashi OZAWA, Kenji TAMAMITSU
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Patent number: 8675347Abstract: Disclosed are an aluminum electrolytic capacitor having low impedance properties and a long service life, and an electrolytic solution which enables to give such capacitor. The electrolytic solution contains a solvent containing water, a phosphorus oxoacid ion-generating compound which can generate a phosphorus oxoacid ion in an aqueous solution, and a chelating agent which can coordinate with aluminum to form an aqueous aluminum chelate complex. The electrolytic solution further contains a compound selected from the group consisting of azelaic acid and an azelaic acid salt, and a compound selected from the group consisting of formic acid, a formic acid salt, adipic acid, an adipic acid salt, glutaric acid and a glutaric acid salt. The content of azelaic acid and/or the azelaic acid salt is at least 0.03 moles per kg of the solvent.Type: GrantFiled: July 11, 2009Date of Patent: March 18, 2014Assignee: Nippon Chemi-Con CorporationInventors: Masao Sakakura, Junichi Kawakami, Kazuma Okura, Shingo Takeuchi, Masashi Ozawa, Kenji Tamamitsu
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Publication number: 20130063868Abstract: A hydrophobic film is formed on the electrode foil surface by adding a straight-chain saturated dicarboxylic acid represented by the general formula: HOOC(CH2)nCOOH (wherein n indicates an integer from 9 to 11) to the electrolytic solution for medium/high-voltage electrolytic capacitor. Addition of a large amount of water to the electrolytic solution is allowed since this hydrophobic film suppresses the hydration reaction between the electrode foil and water. Further, it is possible to retain good lifespan property of the electrolytic capacitor in a medium/high-voltage electrolytic solution by having low specific resistance property and by suppressing the hydration decomposition of the electrode foil, wherein the electrolytic solution is azelaic acid, sebacic acid, 1-methyl-azelaic acid, 1,6-decanedicarboxylic acid, or a salt thereof dissolved in a solvent having ethylene glycol as the main component.Type: ApplicationFiled: March 25, 2011Publication date: March 14, 2013Inventors: Junichi Kawakami, Masao Sakakura, Masashi Ozawa
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Patent number: 8113561Abstract: Mounting structure of a door grip in a door for the vehicle includes a inner panel composing a door body. The mounting structure of a door grip further includes a door trim arranged so as to oppose to the inner side of the inner panel. The door grip is fixed to the inner panel via the door trim and having a pair of connecting parts to be connected to the door trim. Further included are fixing members for fixing the door trim to the inner panel. The fixing members are arranged in both sides of the connecting parts regarding an axis line passing through both the first connecting part and the second connecting part. The fixing members are respectively provided in both sides of the first connecting part while the fixing members are respectively provided in both sides of the second connecting part.Type: GrantFiled: December 2, 2008Date of Patent: February 14, 2012Assignee: Toyota Boshoku Kabushiki KaishaInventors: Kazuki Yamada, Masami Uratsu, Makoto Horiba, Junichi Kawakami
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Publication number: 20120026645Abstract: Disclosed are an aluminum electrolytic capacitor having low impedance properties and a long service life, and an electrolytic solution which enables to give such capacitor. The electrolytic solution contains a solvent containing water, a phosphorus oxoacid ion-generating compound which can generate a phosphorus oxoacid ion in an aqueous solution, and a chelating agent which can coordinate with aluminum to form an aqueous aluminum chelate complex. The electrolytic solution further contains a compound selected from the group consisting of azelaic acid and an azelaic acid salt, and a compound selected from the group consisting of formic acid, a formic acid salt, adipic acid, an adipic acid salt, glutaric acid and a glutaric acid salt. The content of azelaic acid and/or the azelaic acid salt is at least 0.03 moles per kg of the solvent.Type: ApplicationFiled: July 11, 2009Publication date: February 2, 2012Inventors: Masao Sakakura, Junichi Kawakami, Kazuma Okura, Shingo Takeuchi, Masashi Ozama, Kenji Tamamitsu