Patents by Inventor Kenro Mitsuda
Kenro Mitsuda 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: 20120176730Abstract: An electric storage device includes an electric storage device body impregnated with an electrolyte solution, a sheath for hermetically sealing the electric storage device body, and a pressure regulator provided at the sheath. The pressure regulator includes a plurality of gas release mechanism portions. Further, the pressure regulator allows release of gases from an inside space of the sheath in which the electric storage device body exists to an outside space by causing the gases from the inside space to pass through the gas release mechanism portions in succession, and blocks entry of gases from the outside space to the inside space by the respective gas release mechanism portions. A buffer space is formed between the gas release mechanism portions by being partitioned by the gas release mechanism portions.Type: ApplicationFiled: January 5, 2012Publication date: July 12, 2012Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Daigo TAKEMURA, Tetsuya Yagi, Tatsunori Okada, Shuichi Matsumoto, Kenro Mitsuda
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Publication number: 20120171522Abstract: The storage cell includes a flat roll electrode that includes a strip of positive electrode having a positive electrode current collector foil and a positive electrode layer formed thereon, a strip of negative electrode having an electrode current collector foil and a negative electrode layer formed, and a strip of electrically insulated separator, the strip of positive electrode and the strip of negative electrode being wound into a flat roll configuration with the strip of electrically insulated separator sandwiched therebetween; a sealed casing that hermetically seals the flat roll electrode impregnated with an electrolyte; a positive terminal and a negative terminal each electrically insulated from the sealed casing, connected to the positive current collector foil and the negative current collector foil, respectively.Type: ApplicationFiled: March 12, 2012Publication date: July 5, 2012Applicant: Mitsubishi Electric CorporationInventors: Kenro Mitsuda, Daigo Takemura, Osamu Hiroi, Shigeru Aihara
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Publication number: 20120130655Abstract: A damage calculation unit (2, 3) performs: acquiring a charge current value, a charge period, and a representative temperature of the electricity storage device while the electricity storage device is being charged, calculating a cycle damage number for representative temperature based on the obtained values, and integrating the cycle damage number for representative temperature; and acquiring a representative temperature of the electricity storage device in at least an operation state out of the operation state and a storage state, and an elapsed period at the representative temperature, calculating a calendar damage number based on acquired values of the representative temperature and the elapsed period, and integrating the calendar damage number.Type: ApplicationFiled: November 17, 2011Publication date: May 24, 2012Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Kenro MITSUDA, Akihisa Yoshimura, Shoichi Kitamura, Takuto Yano
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Publication number: 20120114982Abstract: Provided is an energy storage device cell capable of enhancing energy density. The energy storage device cell includes: a battery main body including battery anode plate members and battery cathode plate members, in which the battery cathode plate members are placed at both ends in a stack direction; common anode plate members each including a common anode collector foil having a through-hole formed therein and common anode electrode layers, the common anode plate members being stacked on the battery cathode plate members placed at both ends in the stack direction of the battery main body; capacitor cathode plate members each including a capacitor cathode collector foil and a capacitor cathode electrode layer, in which the capacitor cathode electrode layer is placed between the common anode plate member and the capacitor cathode collector foil.Type: ApplicationFiled: November 2, 2011Publication date: May 10, 2012Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Kenro MITSUDA, Makiko Kise, Shoji Yoshioka, Shigeru Aihara
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Patent number: 8173289Abstract: The storage cell includes a flat roll electrode that includes a strip of positive electrode having a positive electrode current collector foil and a positive electrode layer formed thereon, a strip of negative electrode having an electrode current collector foil and a negative electrode layer formed, and a strip of electrically insulated separator, the strip of positive electrode and the strip of negative electrode being wound into a flat roll configuration with the strip of electrically insulated separator sandwiched therebetween; a sealed casing that hermetically seals the flat roll electrode impregnated with an electrolyte; a positive terminal and a negative terminal each electrically insulated from the sealed casing, connected to the positive current collector foil and the negative current collector foil, respectively.Type: GrantFiled: November 12, 2008Date of Patent: May 8, 2012Assignee: Mitsubishi Electric CorporationInventors: Kenro Mitsuda, Daigo Takemura, Osamu Hiroi, Shigeru Aihara
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Publication number: 20110281170Abstract: A method of manufacturing an energy storage device electrode in which breakage of electrode particles and warping of a collector are reduced, and internal resistance is lowered by lowering the contact resistance between the collector and an electrode layer. The method manufactures an electric double-layer capacitor electrode, and includes: forming a plurality of grooves that run in one direction in each of a front surface and rear surface of a collector foil; subsequently providing an electrode layer that includes plural electrode particles on each of the front surface and rear surface of the collector foil; and subsequently pressing the electrode layer toward the collector foil to move the plurality of electrode particles along the plurality of grooves until the plural electrode particles dig into the plurality of grooves.Type: ApplicationFiled: March 17, 2010Publication date: November 17, 2011Applicant: Mitsubishi Electric CorporationInventors: Kenro Mitsuda, Kazuki Kubo, Shigeru Aihara, Daigo Takemura
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Patent number: 7974073Abstract: An electric double-layer capacitor includes: a positive electrode containing a carbon material; a negative electrode containing a carbon material and a titanium oxide; and an electrolytic solution containing an ammonium salt. A weight ratio of the titanium oxide to the carbon material contained in the negative electrode is 2% by weight or more but not more than 50% by weight.Type: GrantFiled: October 9, 2007Date of Patent: July 5, 2011Assignee: Mitsubishi Electric CorporationInventors: Daigo Takemura, Kenro Mitsuda, Tetsuo Mitani, Kazuki Kubo
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Patent number: 7636232Abstract: A porous electrolytic solution reservoir which is capable of being impregnated with an electrolytic solution is provided in an exterior case so as to make contact with a separator. The average diameter of the pores in the electrolytic solution reservoir is greater than the average diameter of pores in the separator. The electrolytic solution reservoir is impregnated with a predetermined amount of electrolytic solution, so that the occupation ratio of electrolytic solution within the pores in the separator becomes 50% or more when fully charged, and the occupation ratio of electrolytic solution within the pores in the electrolytic solution reservoir becomes 100% or less when fully discharged.Type: GrantFiled: October 29, 2008Date of Patent: December 22, 2009Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kenro Mitsuda, Yoshiyuki Takuma, Daigo Takemura, Kazuki Kubo, Tetsuo Mitani, Fumiyuki Miyamoto, Takashi Masuda
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Patent number: 7616429Abstract: Provided is an electric double layer capacitor including a large capacity single cell having a large electrostatic capacity and a small capacity single cell are connected to the same exterior case in parallel, and a thickness of a separator of the large capacity single cell is made thicker than a thickness of a separator of the small capacity single cell. With this structure, a supply amount of an electrolyte solution to the large capacity single cell is markedly increased compared with the small capacity single cell, thereby being capable of preventing degradation of the large capacity single cells and the small capacity single cells and providing the electric double layer capacitor having an excellent cycle life and having a large power storage amount while keeping characteristics capable of instantaneously allowing large current to flow.Type: GrantFiled: February 28, 2007Date of Patent: November 10, 2009Assignee: Mitsubishi Electric CorporationInventors: Kenro Mitsuda, Ikuro Suga, Sadayuki Matsumoto, Makoto Seto, Naoki Ochi, Yoshiyuki Takuma
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Publication number: 20090148759Abstract: An energy storage device cell includes: a capacitor cathode including a capacitor cathode collector foil, and a capacitor cathode electrode layer formed on one face of the capacitor cathode collector foil and containing microparticles of activated carbon; a first separator; a common anode including an anode collector foil having a through-hole, and an anode electrode layer formed on one face of the anode collector foil; a second separator; and a battery cathode including a battery cathode collector foil, and a battery cathode electrode layer formed on one face of the battery cathode collector foil and containing particles of a lithium-containing metal compound. The first separator is sandwiched by the capacitor cathode electrode layer and the anode electrode layer. The second separator is sandwiched by the anode collector foil and the battery cathode electrode layer.Type: ApplicationFiled: December 5, 2008Publication date: June 11, 2009Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Kenro MITSUDA, Osamu Hiroi, Daigo Takemura, Shigeru Aihara
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Publication number: 20090147442Abstract: The present invention relates to an electric double-layer capacitor and a method for producing same capable of evenly and rapidly doping a negative electrode layer with lithium ions. The electric double-layer capacitor comprises: a positive electrode including a positive electrode layer formed on one surface of a positive electrode current collector; a negative electrode including a negative electrode layer formed on one surface of a negative electrode current collector; a first separator disposed between the positive electrode layer and the negative electrode layer; and a second separator disposed between the positive electrode current collector and the negative electrode current collector, in which the negative electrode includes holes penetrating through the negative electrode current collector and reaching the negative electrode layer.Type: ApplicationFiled: November 5, 2008Publication date: June 11, 2009Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Osamu HIROI, Daigo Takemura, Kenro Mitsuda, Shigeru Aihara, Kazuki Kubo, Yasushi Uehara
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Publication number: 20090136832Abstract: The storage cell comprises a flat roll electrode that includes a strip of positive electrode having a positive electrode current collector foil and a positive electrode layer formed thereon, a strip of negative electrode having an electrode current collector foil and a negative electrode layer formed, and a strip of electrically insulated separator, the strip of positive electrode and the strip of negative electrode being wound into a flat roll configuration with the strip of electrically insulated separator sandwiched therebetween; a sealed casing that hermetically seals the flat roll electrode impregnated with an electrolyte; a positive terminal and a negative terminal each electrically insulated from the sealed casing, connected to the positive current collector foil and the negative current collector foil, respectively.Type: ApplicationFiled: November 12, 2008Publication date: May 28, 2009Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Kenro MITSUDA, Daigo Takemura, Osamu Hiroi, Shigeru Aihara
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Publication number: 20090059473Abstract: A porous electrolytic solution reservoir which is capable of being impregnated with an electrolytic solution is provided in an exterior case so as to make contact with a separator. The average diameter of the pores in the electrolytic solution reservoir is greater than the average diameter of pores in the separator. The electrolytic solution reservoir is impregnated with a predetermined amount of electrolytic solution, so that the occupation ratio of electrolytic solution within the pores in the separator becomes 50% or more when fully charged, and the occupation ratio of electrolytic solution within the pores in the electrolytic solution reservoir becomes 100% or less when fully discharged.Type: ApplicationFiled: October 29, 2008Publication date: March 5, 2009Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Kenro Mitsuda, Yoshiyuki Takuma, Daigo Takemura, Kazuki Kubo, Tetsuo Mitani, Fumiyuki Miyamoto, Takashi Masuda
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Patent number: 7463478Abstract: A porous electrolytic solution reservoir which is capable of being impregnated with an electrolytic solution is provided in an exterior case so as to make contact with a separator. The average diameter of the pores in the electrolytic solution reservoir is greater than the average diameter of pores in the separator. The electrolytic solution reservoir is impregnated with a predetermined amount of electrolytic solution, so that the occupation ratio of electrolytic solution within the pores in the separator becomes 50% or more when fully charged, and the occupation ratio of electrolytic solution within the pores in the electrolytic solution reservoir becomes 100% or less when fully discharged.Type: GrantFiled: April 3, 2006Date of Patent: December 9, 2008Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kenro Mitsuda, Yoshiyuki Takuma, Daigo Takemura, Kazuki Kubo, Tetsuo Mitani, Fumiyuki Miyamoto, Takashi Masuda
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Publication number: 20080112112Abstract: An electric double-layer capacitor includes: a positive electrode containing a carbon material; a negative electrode containing a carbon material and a titanium oxide; and an electrolytic solution containing an ammonium salt. A weight ratio of the titanium oxide to the carbon material contained in the negative electrode is 2% by weight or more but not more than 50% by weight.Type: ApplicationFiled: October 9, 2007Publication date: May 15, 2008Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Daigo TAKEMURA, Kenro Mitsuda, Tetsuo Mitani, Kazuki Kubo
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Publication number: 20070215926Abstract: Provided is an electric double layer capacitor including a large capacity single cell having a large electrostatic capacity and a small capacity single cell are connected to the same exterior case in parallel, and a thickness of a separator of the large capacity single cell is made thicker than a thickness of a separator of the small capacity single cell. With this structure, a supply amount of an electrolyte solution to the large capacity single cell is markedly increased compared with the small capacity single cell, thereby being capable of preventing degradation of the large capacity single cells and the small capacity single cells and providing the electric double layer capacitor having an excellent cycle life and having a large power storage amount while keeping characteristics capable of instantaneously allowing large current to flow.Type: ApplicationFiled: February 28, 2007Publication date: September 20, 2007Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Kenro Mitsuda, Ikuro Suga, Sadayuki Matsumoto, Makoto Seto, Naoki Ochi, Yoshiyuki Takuma
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Patent number: 7141328Abstract: A fuel cell includes an electrolyte membrane, an anode on one surface of the electrolyte membrane and having an anode catalyst layer that is supplied with fuel and contains a platinum-ruthenium alloy catalyst, and a cathode on the other surface of the electrolyte membrane and having an cathode catalyst layer that is supplied with air and contains a platinum catalyst. The anode catalyst layer and the cathode catalyst layer include divided catalyst segments, and gaps between the divided catalyst segments that are adjacent to each other.Type: GrantFiled: August 12, 2002Date of Patent: November 28, 2006Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hisatoshi Fukumoto, Osamu Hiroi, Kenro Mitsuda, Hideo Maeda, Yasuhiro Yoshida, Tatsuya Hayashi, Akihisa Yoshimura
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Publication number: 20060238957Abstract: A porous electrolytic solution reservoir which is capable of being impregnated with an electrolytic solution is provided in an exterior case so as to make contact with a separator. The average diameter of the pores in the electrolytic solution reservoir is greater than the average diameter of pores in the separator. The electrolytic solution reservoir is impregnated with a predetermined amount of electrolytic solution, so that the occupation ratio of electrolytic solution within the pores in the separator becomes 50% or more when fully charged, and the occupation ratio of electrolytic solution within the pores in the electrolytic solution reservoir becomes 100% or less when fully discharged.Type: ApplicationFiled: April 3, 2006Publication date: October 26, 2006Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Kenro Mitsuda, Yoshiyuki Takuma, Daigo Takemura, Kazuki Kubo, Tetsuo Mitani, Fumiyuki Miyamoto, Takashi Masuda
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Patent number: 6878354Abstract: A catalyst for internal combustion engine exhaust purification without frequently switching to a rich burn mode. The catalyst includes a catalyst A containing an NOx absorbing substance and an NOx reducing catalyst, a catalyst B containing a hydrogen adsorption substance and a hydrogen oxidizing catalyst, an electron conductive substance C, and an ion conductive substance D. Electrons move between the catalyst A and the catalyst B through the electron conductive substance C, ions move through the ion conductive substance D, and an electrochemical reducing reaction and an electrochemical oxidizing reaction respectively occur on the catalyst A and on the catalyst B. Therefore, it is possible to quickly reduce the adsorbed NOx using the adsorbed hydrogen without depending on the atmosphere.Type: GrantFiled: August 24, 2000Date of Patent: April 12, 2005Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kenro Mitsuda, Minoru Satou, Hiroaki Sigeoka, Ryoji Nishiyama, Yuji Kishimoto, Hideaki Katashiba, Hirofumi Oouchi
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Patent number: 6755017Abstract: A device for purifying exhaust gas of an internal combustion engine which provides improved purifying efficiency even in a lean operating condition without deteriorating the fuel efficiency. The device includes an electrochemical catalyst 5 installed in the exhaust system 3 of the internal combustion engine 1, the electro chemical catalyst 5 containing an electron conducting substance and an ion conducting substance, the oxidizing reaction and the reducing reaction being promoted by the conduction of ions and electrons, thereby to electrochemically purify the exhaust gas G in the exhaust system.Type: GrantFiled: July 9, 2001Date of Patent: June 29, 2004Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hideaki Katashiba, Satoshi Wachi, Kenro Mitsuda, Kouji Hamano