Patents by Inventor Hidehisa Mokudai
Hidehisa Mokudai 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: 9711824Abstract: A secondary battery that has an electrode active material mainly composed of a low-molecular-weight multi-electron organic compound that has two or more electrons to be involved in a battery electrode reaction, and a solvent for an electrolyte solution that contains a sulfone compound. Apart of the electrode active material is dissolved in and reacted with the electrolyte solution at the first charge and discharge, thereby oligomerizing a part of the electrode active material.Type: GrantFiled: May 8, 2015Date of Patent: July 18, 2017Assignees: MURATA MANUFACTURING CO., LTD., CARLIT HOLDINGS CO., LTD.Inventors: Tomoaki Onoue, Masaharu Sato, Eiji Kokubu, Kazumi Chiba, Kazato Yanada, Toshiyuki Kiryu, Teruhisa Takada, Hidehisa Mokudai, Toru Sukigara
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Patent number: 9647268Abstract: Provided is a battery having a high charging/discharging capacity density as compared with a conventional one. The battery (1) is characterized by comprising a positive electrode (2), a negative electrode (3), and an electrolytic solution interposed between the positive electrode (2) and the negative electrode (3) and formed by dissolving an electrolytic solution in a solvent, wherein the positive electrode (2) includes rubeanic acid or a rubeanic acid derivative as an active material and the solvent includes an ionic liquid. In the battery (1), it is possible to neutralize, by anions present in the ions, positive charges generated when rubeanic acid or the rubeanic acid derivative is oxidized. Therefore, rubeanic acid or the rubeanic acid derivative can take three states from an oxidant to a reductant, so that a high charging/discharging capacity density can be obtained in comparison with a conventional one.Type: GrantFiled: September 7, 2012Date of Patent: May 9, 2017Assignees: HONDA MOTOR CO., LTD., MURATA MANUFACTURING CO., LTD.Inventors: Hidehisa Mokudai, Toru Sukigara, Masaharu Sato, Tomoaki Onoue
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Patent number: 9601757Abstract: An electrode active material has, as a main component, a mixture of an organic compound containing a rubeanic acid and oxamide. The rubeanic acid is represented by the following general formula: In the formula, n indicates an integer between 1 and 20, and R1-R4 indicate hydrogen atoms, halogen atoms, or a prescribed substituent group such as a hydroxide group, a 1-3C alkyl group, an amino group, a phenyl group, a cyclohexyl group, or a sulfo group.Type: GrantFiled: May 16, 2014Date of Patent: March 21, 2017Assignees: MURATA MANUFACTURING CO., LTD., HONDA GIKEN KOGYO KABUSHIKI KAISHAInventors: Masaharu Sato, Tomoaki Onoue, Masanori Mita, Hidehisa Mokudai, Toru Sukigara
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Patent number: 9601778Abstract: An electrode active material has, as a main component, a mixture of an organic compound containing a rubeanic acid and cyanomethanesulfonylamide. The rubeanic acid is represented by the following general formula: In the formula, n indicates an integer between 1 and 20, and R1-R4 indicate hydrogen atoms, halogen atoms, or a prescribed substituent group such as a hydroxide group, a 1-3C alkyl group, an amino group, a phenyl group, a cyclohexyl group, or a sulfo group.Type: GrantFiled: May 16, 2014Date of Patent: March 21, 2017Assignees: MURATA MANUFACTURING CO., LTD., HONDA GIKEN KOGYO KABUSHIKI KAISHAInventors: Masaharu Sato, Tomoaki Onoue, Hidehisa Mokudai, Toru Sukigara
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Publication number: 20150263387Abstract: A secondary battery that has an electrode active material mainly composed of a low-molecular-weight multi-electron organic compound that has two or more electrons to be involved in a battery electrode reaction, and a solvent for an electrolyte solution that contains a sulfone compound. Apart of the electrode active material is dissolved in and reacted with the electrolyte solution at the first charge and discharge, thereby oligomerizing a part of the electrode active material.Type: ApplicationFiled: May 8, 2015Publication date: September 17, 2015Inventors: Tomoaki Onoue, Masaharu Sato, Eiji Kokubu, Kazumi Chiba, Kazato Yanada, Toshiyuki Kiryu, Teruhisa Takada, Hidehisa Mokudai, Toru Sukigara
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Publication number: 20150263349Abstract: Provided is a battery having a higher charge-discharge capacity density than conventional batteries, and exhibiting excellent charge-discharge cycle properties and charge-discharge efficiency. This battery (1) is provided with a positive electrode (2), a negative electrode (3), and an electrolyte solution which lies between the positive electrode (2) and the negative electrode (3) and which comprises an electrolyte, the positive electrode (2) containing rubeanic acid or a rubeanic acid derivative as an active material, and the molar concentration of the electrolyte in the electrolytic solution being greater than 1.0 mol/L. This battery (1) has a large volume of anions originating from the electrolyte, and rubeanic acid or a rubeanic acid derivative can be used from the oxidant to reduced form thereof, thus it is possible to obtain a higher charge-discharge capacity density than conventional batteries, excellent charge-discharge cycle properties and excellent charge-discharge efficiency.Type: ApplicationFiled: August 1, 2013Publication date: September 17, 2015Applicant: HONDA MOTOR CO., LTD.Inventor: Hidehisa Mokudai
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Publication number: 20150243992Abstract: A secondary battery that includes a positive electrode active material layer, which is mainly composed of an organic compound having a multi-electron system, on a surface of a positive electrode current collector. The surface of the positive electrode active material layer is covered by an ion-conducting thin film that selectively transmits lithium ions. A positive electrode is composed of the positive electrode current collector, the positive electrode active material layer, and the ion-conducting thin film.Type: ApplicationFiled: May 8, 2015Publication date: August 27, 2015Inventors: Norihiko Maruyama, Masaharu Sato, Eiji Kokubu, Kazumi Chiba, Kazato Yanada, Toshiyuki Kiryu, Teruhisa Takada, Hidehisa Mokudai, Toru Sukigara
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Publication number: 20150132667Abstract: A secondary battery having an electrode active material mainly composed of an organic compound that includes, in a constituent unit, at least one compound selected from the group consisting of a dithione compound having a dithione structure, a dione compound having a dione structure, an organic radical compound containing a stable radical group and a diamine compound having a diamine structure. The secondary battery also has an electrolyte that contains a chain sulfone compound.Type: ApplicationFiled: January 16, 2015Publication date: May 14, 2015Inventors: Masaharu Sato, Eiji Kokubu, Kazumi Chiba, Toshiyuki Kiryu, Hidehisa Mokudai, Toru Sukigara
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Publication number: 20140248536Abstract: An electrode active material has, as a main component, a mixture of an organic compound containing a rubeanic acid and oxamide. The rubeanic acid is represented by the following general formula: In the formula, n indicates an integer between 1 and 20, and R1-R4 indicate hydrogen atoms, halogen atoms, or a prescribed substituent group such as a hydroxide group, a 1-3C alkyl group, an amino group, a phenyl group, a cyclohexyl group, or a sulfo group.Type: ApplicationFiled: May 16, 2014Publication date: September 4, 2014Applicants: MURATA MANUFACTURING CO., LTD., Honda Giken Kogyo Kabushiki KaishaInventors: Masaharu Sato, Tomoaki Onoue, Masanori Mita, Hidehisa Mokudai, Toru Sukigara
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Publication number: 20140248535Abstract: An electrode active material has, as a main component, a mixture of an organic compound containing a rubeanic acid and cyanomethanesulfonylamide. The rubeanic acid is represented by the following general formula: In the formula, n indicates an integer between 1 and 20, and R1-R4 indicate hydrogen atoms, halogen atoms, or a prescribed substituent group such as a hydroxide group, a 1-3C alkyl group, an amino group, a phenyl group, a cyclohexyl group, or a sulfo group.Type: ApplicationFiled: May 16, 2014Publication date: September 4, 2014Applicants: MURATA MANUFACTURING CO.,LTD., Honda Giken Kogyo Kabushiki KaishaInventors: Masaharu Sato, Tomoaki Onoue, Hidehisa Mokudai, Toru Sukigara
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Publication number: 20140212754Abstract: Provided is a battery having a high charging/discharging capacity density as compared with a conventional one. The battery (1) is characterized by comprising a positive electrode (2), a negative electrode (3), and an electrolytic solution interposed between the positive electrode (2) and the negative electrode (3) and formed by dissolving an electrolytic solution in a solvent, wherein the positive electrode (2) includes rubeanic acid or a rubeanic acid derivative as an active material and the solvent includes an ionic liquid. In the battery (1), it is possible to neutralize, by anions present in the ions, positive charges generated when rubeanic acid or the rubeanic acid derivative is oxidized. Therefore, rubeanic acid or the rubeanic acid derivative can take three states from an oxidant to a reductant, so that a high charging/discharging capacity density can be obtained in comparison with a conventional one.Type: ApplicationFiled: September 7, 2012Publication date: July 31, 2014Applicants: MURATA MANUFACTURING CO., LTD., HONDA MOTOR CO., LTD.Inventors: Hidehisa Mokudai, Toru Sukigara, Masaharu Sato, Tomoaki Onoue
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Patent number: 8684118Abstract: A cooling structure having a sufficient cooling efficiency in cooling an electricity storage device while securing a living space in a vehicle cabin when installed in a compact vehicle having a short distance from a rear seat to the rear end of the vehicle. A battery is contained in an IPU installed in the vehicle. The cooling structure for the battery has an air inlet opened into the vehicle cabin, an air intake duct extending from the air inlet to the IPU and a cover disposed to cover the air inlet and having a hole communicating the air intake duct with the inner side of the vehicle cabin. The air inlet has an opening inclined toward the inner side of the vehicle cabin in one side section of a rear portion of the vehicle cabin near a C-pillar located obliquely posterior to a rear seat.Type: GrantFiled: October 29, 2010Date of Patent: April 1, 2014Assignee: Honda Motor Co., Ltd.Inventors: Keishi Kosaka, Byoungju Lee, Yoshiaki Takahashi, Tohru Kuribayashi, Hidehisa Mokudai
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Publication number: 20130344385Abstract: An electrode active material has the general formula (I) or (II) in a constituent unit. In the formulas, X is C or Si; and Y1 and Y2, or Y3 and Y4 are different substituent groups selected from among S, O, Se, Te, NH, SR1?R2?, and SR3?R4?. R1 to R4 and R1? to R4? are predetermined substituent groups. Z is CH2, CF2, O, S, SO, SO2, Se, or N—Z? (where Z? is a hydrogen atom, an alkyl group, an aryl group, or an oxygen radical). Thereby, high energy density, high output, and excellent cycle characteristics which has a small deterioration of capacity even in repeating charge and discharge are realized.Type: ApplicationFiled: August 23, 2013Publication date: December 26, 2013Applicants: Honda Giken Kogyo Kabushiki Kaisha, MURATA MANUFACTURING CO., LTD.Inventors: Tomoaki Onoue, Masaharu Satoh, Toru Sukigara, Hidehisa Mokudai
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Publication number: 20120247848Abstract: A cooling structure having a sufficient cooling efficiency in cooling an electricity storage device while securing a living space in a vehicle cabin when installed in a compact vehicle having a short distance from a rear seat to the rear end of the vehicle. A battery is contained in an IPU installed in the vehicle. The cooling structure for the battery has an air inlet opened into the vehicle cabin, an air intake duct extending from the air inlet to the IPU and a cover disposed to cover the air inlet and having a hole communicating the air intake duct with the inner side of the vehicle cabin. The air inlet has an opening inclined toward the inner side of the vehicle cabin in one side section of a rear portion of the vehicle cabin near a C-pillar located obliquely posterior to a rear seat.Type: ApplicationFiled: October 29, 2010Publication date: October 4, 2012Applicant: HONDA MOTOR CO., LTD.Inventors: Keishi Kosaka, Byoungju Lee, Yoshiaki Takahashi, Tohru Kuribayashi, Hidehisa Mokudai
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Patent number: 7442758Abstract: The present invention provides a polymer compound for an electrode material permitting operation at low temperatures and attainment of large capacities, an electrode using the polymer compound, and a nonaqueous solution battery involving the electrode as the positive electrode thereof. The polymer compound includes a structure capable of intramolecularly forming at least one S—S bond in a single side chain of the repeating unit thereof. The S—S bond constitutes a part of a 4- to 6-membered heterocycle. The electrode includes as an electrode material the polymer compound including a structure capable of intramolecularly forming at least one S—S bond in the single side chain of the repeating unit thereof.Type: GrantFiled: December 10, 2004Date of Patent: October 28, 2008Assignees: Sensa Corporation, Honda Motor Co., Ltd.Inventors: Hiroshi Uemachi, Katsunori Nakaya, Hidehisa Mokudai
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Patent number: 7029794Abstract: An electrode includes an electrically conductive matrix containing a disulfide group, wherein an S—S bond of the disulfide group is cleaved by electrochemical reduction and reformed by electrochemical oxidation. A plurality of carbon nanotubes are substantially disentangled and dispersed in the electrically conductive matrix. The electrode can be used as a cathode of a lithium battery. A method for producing disentangled carbon nanotubes includes the steps of: adding a plurality of aggregates of carbon nanotubes to a liquid; and providing sheer force (e.g. passing the liquid through a narrow gap at a high speed) onto the liquid for disentangling the aggregates of carbon nanotubes therein.Type: GrantFiled: May 1, 2001Date of Patent: April 18, 2006Assignee: Celanese Ventures GmbHInventors: Shizuo Ogura, Hidehisa Mokudai, Makoto Murata, Barrie Linton Davies
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Publication number: 20050142441Abstract: The present invention provides a polymer compound for an electrode material permitting operation at low temperatures and attainment of large capacities, an electrode using the polymer compound, and a nonaqueous solution battery involving the electrode as the positive electrode thereof. The polymer compound includes a structure capable of intramolecularly forming at least one S—S bond in a single side chain of the repeating unit thereof. The S—S bond constitutes a part of a 4- to 6-membered heterocycle. The electrode includes as an electrode material the polymer compound including a structure capable of intramolecularly forming at least one S—S bond in the single side chain of the repeating unit thereof.Type: ApplicationFiled: December 10, 2004Publication date: June 30, 2005Inventors: Hiroshi Uemachi, Katsunori Nakaya, Hidehisa Mokudai
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Patent number: 6703163Abstract: An electrode includes an electrically conductive matrix containing a disulfide group, wherein an S—S bond of the disulfide group is cleaved by electrochemical reduction and reformed by electrochemical oxidation. A plurality of carbon nanotubes is dispersed in the electrically conductive matrix. The electrode can be used as a cathode of a lithium battery.Type: GrantFiled: May 1, 2001Date of Patent: March 9, 2004Assignee: Celanese Ventures GmbHInventors: Shizuo Ogura, Hidehisa Mokudai, Makoto Murata, Barrie Linton Davies
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Publication number: 20020182495Abstract: An electrode includes an electrically conductive matrix containing a disulfide group, wherein an S—S bond of the disulfide group is cleaved by electrochemical reduction and reformed by electrochemical oxidation. A plurality of carbon nanotubes are substantially disentangled and dispersed in the electrically conductive matrix. The electrode can be used as a cathode of a lithium battery. A method for producing disentangled carbon nanotubes includes the steps of: adding a plurality of aggregates of carbon nanotubes to a liquid; and providing sheer force (e.g. passing the liquid through a narrow gap at a high speed) onto the liquid for disentangling the aggregates of carbon nanotubes therein.Type: ApplicationFiled: May 1, 2001Publication date: December 5, 2002Inventors: Shizuo Ogura, Hidehisa Mokudai, Makoto Murata, Barrie Linton Davies
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Publication number: 20020061441Abstract: An electrode includes an electrically conductive matrix containing a disulfide group, wherein an S—S bond of the disulfide group is cleaved by electrochemical reduction and reformed by electrochemical oxidation. A plurality of carbon nanotubes is dispersed in the electrically conductive matrix. The electrode can be used as a cathode of a lithium battery.Type: ApplicationFiled: May 1, 2001Publication date: May 23, 2002Inventors: Shizuo Ogura, Hidehisa Mokudai, Makoto Murata, Barrie Linton Davies