Patents by Inventor Masahiro Suguro
Masahiro Suguro 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: 20120100437Abstract: There can be provided an energy storage device comprising a positive electrode comprising a nitroxyl compound having a nitroxyl cation partial structure in an oxidized state and having a nitroxyl radical partial structure in a reduced state; a negative electrode comprising a carbon material which lithium ions can be reversibly intercalated into and deintercalated from; and an electrolytic solution comprising a lithium salt and an aprotic organic solvent, wherein the negative electrode is a negative electrode comprising the carbon material which lithium ions are previously intercalated into, apart from lithium ions associated with a capacity A of lithium capable of being intercalated and deintercalated in charge and discharge, thereby allowing the energy storage device to simultaneously achieve high energy density, high output characteristics, low environmental load, and high stability in charge and discharge cycles.Type: ApplicationFiled: May 26, 2010Publication date: April 26, 2012Applicant: NEC CORPORATIONInventors: Kentaro Nakahara, Shigeyuki Iwasa, Masahiro Suguro, Kazuaki Matsumoto, Kaichiro Nakano
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Publication number: 20120001163Abstract: A photoelectric conversion element is provided which includes a photoelectrode (101) having a porous semiconductor layer (106) and a transparent electrode (107) and a counter electrode (102) disposed to face the photoelectrode (101) and in which a nitroxyl radical compound expressed by General Formula 1 is mainly enclosed between the photoelectrode (101) and the counter electrode (102). (where A in General Formula 1 represents a substituted or unsubstituted aromatic group and may contain one or more atoms of oxygen, nitrogen, sulfur, silicon, phosphorus, boron, or halogen and the aromatic group may be obtained by condensing a plurality of aromatic groups).Type: ApplicationFiled: March 4, 2010Publication date: January 5, 2012Applicant: NEC CORPORATIONInventors: Kenji Kobayashi, Kentaro Nakahara, Masahiro Suguro, Shin Nakamura
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Publication number: 20110308617Abstract: A photoelectric conversion element is provided which includes a semiconductor electrode (108) containing a semiconductor layer (103) and a dye, a counter electrode (109), and an electrolyte layer (104) disposed between the semiconductor electrode (108) and the counter electrode (109) and in which the dye contains a compound expressed by General Formula 1. (where A in General Formula 1 represents a substituted or unsubstituted aromatic group and may contain one or more atoms of oxygen, nitrogen, sulfur, silicon, phosphorus, boron, or halogen and the aromatic group may be obtained by condensing a plurality of aromatic groups).Type: ApplicationFiled: March 4, 2010Publication date: December 22, 2011Applicant: NEC CORPORATIONInventors: Kentaro Nakahara, Kenji Kobayashi, Masahiro Suguro, Shin Nakamura
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Publication number: 20110172378Abstract: In the present invention, in order to provide an electrode active material that has a high capacity density and from which a large current can be extracted and to provide a battery that has a high energy density and produces a large output, in a battery comprising at least a cathode, an anode and an electrolyte, a polyradical compound having a partial structure represented by the following general formula (2) is used as an electrode active material for at least one of the cathode and the anode, wherein, in the formula (2), R1 to R3 independently represent a hydrogen atom or a methyl group; and R4 to R7 independently represent an alkyl group having 1 to 3 carbon atoms.Type: ApplicationFiled: March 21, 2011Publication date: July 14, 2011Applicant: NEC CORPORATIONInventors: Masahiro SUGURO, Shigeyuki IWASA, Jirou IRIYAMA, Kentaro NAKAHARA, Masaharu SATOU
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Publication number: 20110129730Abstract: A secondary battery using a polymer radical material and a conducting additive in which the performance of a conductive auxiliary layer is further improved and the internal resistance is reduced, thereby achieving a higher output. Specifically disclosed is a secondary battery in which at least one of a positive electrode and a negative electrode uses, as an electrode active material, a polymer radical material and a conducting additive having electrical conductivity. By providing a conductive auxiliary layer between a current collector and the polymer radical material/conducting additive electrode which is mainly composed of graphite, fibrous carbon or a granular carbon having a DBP absorption of not more than 110 cm3/100 g, the secondary battery with a higher output can be obtained.Type: ApplicationFiled: July 3, 2009Publication date: June 2, 2011Applicants: DIC Corporation, NEC CORPORATIONInventors: Masanori Kasai, Hiroshi Isozumi, Takayoshi Obata, Shigeyuki Iwasa, Kentaro Nakahara, Masahiro Suguro
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Publication number: 20110123877Abstract: An oxygen reduction catalyst and the catalyst as an electrode catalyst are provided. The oxygen reduction catalyst is characterized by including an organometallic polymer structure in which a transition metal or zinc is coordinated with an organic polymer compound including a ligand comprising a heterocyclic 5-membered ring or a heterocyclic 6-membered ring containing at least not less than two elements selected from nitrogen (N), oxygen (O), sulfur (S), and selenium (Se), and derivatives thereof. Thereby, even when an amount of a metal is smaller than that in a platinum particulate catalyst, an oxygen reduction capacity equal to or more than that of the platinum particulate catalyst can be obtained. Further, by coordinating a metal with an organic polymer, stability in an oxygen reduction condition can be significantly improved compared to the case of metal based macrocyclic compounds.Type: ApplicationFiled: August 5, 2008Publication date: May 26, 2011Applicant: NEC CORPORATIONInventors: Masashi Matsumoto, Hideto Imai, Yasuharu Okamoto, Tetsuaki Hirayama, Masahiro Suguro, Sadanori Kuroshima, Takashi Manako
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Publication number: 20100255372Abstract: Disclosed is a polyradical compound which can be used as an electrode active material for at least one of a positive electrode and a negative electrode. The polyradical compound has a repeating unit represented by general formula (1) and is crosslinked using a bifunctional crosslinking agent having two polymerizing groups in the molecule represented by general formula (2), wherein R1 to R3 each independently represent hydrogen or methyl group; R4 to R7 each independently represent C1 to C3 alkyl group; X represents single bond, linear, branched or cyclic C1 to C15 alkylenedioxy group, alkylene group, phenylenedioxy group, phenylene group or structure represented by general formula (3); and R8 to R13 each independently represent hydrogen or methyl group, and k represents an integer of 2 to 5.Type: ApplicationFiled: June 4, 2007Publication date: October 7, 2010Applicant: NEC CORPORATIONInventors: Masahiro Suguro, Shigeyuki Iwasa, Yuki Kusachi, Jiro Iriyama, Yukiko Morioka, Kentaro Nakahara, Sadahiko Miura
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Publication number: 20100009256Abstract: Disclosed is a composite body of an electrode active material and a conductivity-imparting agent, which has high capacity density and enables to take out a large current. Also disclosed are a method for producing such a composite body, and a battery having high energy density and a large output power. Specifically, a polyradical compound as an electrode active material and a conductive material are heated and mixed at a temperature not less than the softening temperature but less than the decomposition temperature of the polyradical compound, thereby for forming a composite body of the polyradical compound and the conductive material. By producing an electrode using such a composite body, there can be obtained a novel battery having high energy density and large output power.Type: ApplicationFiled: January 21, 2008Publication date: January 14, 2010Applicant: NEC CORPORATIONInventors: Yuki Kusachi, Masahiro Suguro, Shigeyuki Iwasa
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Patent number: 7476465Abstract: An object of the present invention is to provide a battery which is high in capacity density and superior in stability. An electrode containing a compound having a diazine-N,N?-dioxide structure shown by a general formula (1) described below as an electrode active material is used, where x, y, x?, and y? independently shows integer numbers of 0 or more respectively, and the order of condensation of diazine rings and benzene rings may be alternate or random. One of substituents R1, R2, R3, R4, Ra, Rb, Rc, and Rd shows a part of main chain or side chain of oligomer or polymer, and the other independently shows hydrogen atom, halogen atom, or a specific group.Type: GrantFiled: February 18, 2003Date of Patent: January 13, 2009Assignee: NEC CorporationInventors: Yukiko Morioka, Masahiro Suguro, Kentaro Nakahara, Jiro Iriyama, Shigeyuki Iwasa, Masaharu Satoh
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Publication number: 20080297350Abstract: To provide an RFID tag including therein a lightweight, thin, reusable by charging, and foldable power source. In an RFID tag including an IC module 2, an antenna 3, and a power source and with a thickness of 0.9 mm or less, there is included an organic radical battery with a thickness of 0.7 mm or less as the power source.Type: ApplicationFiled: December 4, 2006Publication date: December 4, 2008Applicant: NEC CORPORATIONInventors: Shigeyuki Iwasa, Yukiko Morioka, Masahiro Suguro, Yuki Kusachi, Jiro Iriyama, Kentaro Nakahara, Sadahiko Miura
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Publication number: 20080226986Abstract: An object of the present invention is to provide a power storage device with low internal resistance, employing a cathode containing a nitroxyl polymer. To attain the object in the present invention, in the power storage device employing a cathode comprising a nitroxyl polymer, a cathode collector having a conductive auxiliary layer comprising carbon as a main component formed and integrated on an aluminum electrode is used.Type: ApplicationFiled: December 17, 2004Publication date: September 18, 2008Inventors: Kentaro Nakahara, Jiro Iriyama, Shigeyuki Iwasa, Masahiro Suguro, Masaharu Satoh
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Publication number: 20080213669Abstract: An object of the present invention is to provide a power storage device with excellent cycle property, employing a cathode containing a nitroxyl polymer. To attain the object in the present invention, in the power storage device employing a cathode comprising a nitroxyl polymer, a lithium or lithium alloy anode is used as an anode active material and the cathode is in direct contact with the anode.Type: ApplicationFiled: December 17, 2004Publication date: September 4, 2008Inventors: Kentaro Nakahara, Jiro Iriyama, Shigeyuki Iwasa, Masahiro Suguro, Masaharu Satoh
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Publication number: 20080171265Abstract: In order to provide a positive electrode for a secondary battery having a low electric resistance and a large mechanical strength, and a secondary battery capable of charge and discharge using a large current and having a large capacity and excellent in storage characteristics, there is used a positive electrode for a secondary battery comprising an active material layer at least comprising a radical compound and a carbon fiber in which a graphite structure has an average value of interlayer distances d002 in the range of not less than 0.335 nm and not more than 0.340 nm. Such a carbon fiber having the interlayer distance has a modulus of elongation in the range of not less than 200 GPa and not more than 800 GPa. Particularly the carbon fiber preferably has a volume resistivity in the range of not less than 200??·cm and not more than 2000??·cm. The carbon fiber is preferably a vapor-grown carbon fiber or a graphitized carbon fiber derived from a mesophase pitch as a precursor.Type: ApplicationFiled: January 19, 2006Publication date: July 17, 2008Inventors: Jiro Iriyama, Kentaro Nakahara, Shigeyuki Iwasa, Masahiro Suguro, Masaharu Satoh
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Publication number: 20080038636Abstract: In the present invention, in order to provide an electrode active material that has a high capacity density and from which a large current can be extracted and to provide a battery that has a high energy density and produces a large output, in a battery comprising at least a cathode, an anode and an electrolyte, a polyradical compound having a partial structure represented by the following general formula (2) is used as an electrode active material for at least one of the cathode and the anode, wherein, in the formula (2), R1 to R3 independently represent a hydrogen atom or a methyl group; and R4 to R7 independently represent an alkyl group having 1 to 3 carbon atoms.Type: ApplicationFiled: October 17, 2005Publication date: February 14, 2008Applicant: NEC CorporationInventors: Masahiro Suguro, Shigeyuki Iwasa, Jirou Iriyama, Kentaro Nakahara, Masaharu Satou
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Patent number: 7312000Abstract: A battery, which has excellent safety in an overcharged state and is excellent in low-temperature characteristics and cycle characteristics, is provided. The electrolytic solution of the secondary battery contains a compound which has a diazine N,N?-dioxide structure represented by general formula (1). in which, n, m, n?, and m? each independently are an integer 0 or larger; the diazine rings and the benzene rings may be condensed alternately or randomly; and substituents R1, R2, R3, R4, Ra, Rb, Rc, and Rd each independently represent hydrogen atom, halogen atom, or specific group. However, when n is 2 or larger, then Ra and Rb may be the same or different, and when n? is 2 or larger, then Rc and Rd may be the same or different. In addition, these substituents, in cooperation with each other, may form a ring structure.Type: GrantFiled: December 12, 2002Date of Patent: December 25, 2007Assignee: NEC CorporationInventors: Jiro Iriyama, Yukiko Morioka, Sigeyuki Iwasa, Kentaro Nakahara, Masaharu Satoh, Masahiro Suguro
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Patent number: 7018738Abstract: An electrode including a compound acting as an electrode active material and represented by a general formula (1) having a diazine N,N?-dioxide structure. A novel battery with the higher specific density and the excellent charge and discharge stability can be provided by incorporating the electrode having the compound represented by the general formula (1).Type: GrantFiled: October 1, 2002Date of Patent: March 28, 2006Assignee: NEC CorporationInventors: Yukiko Morioka, Masaharu Satoh, Shigeyuki Iwasa, Jiro Iriyama, Kentaro Nakahara, Masahiro Suguro
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Publication number: 20050100787Abstract: An object of the present invention is to provide a battery which is high in capacity density and superior in stability. An electrode containing a compound having a diazine-N,N?-dioxide structure shown by a general formula (1) described below as an electrode active material is used, where x, y, x?, and y? independently shows integer numbers of 0 or more respectively, and the order of condensation of diazine rings and benzene rings may be alternate or random. One of substituents R1, R2, R3, R4, Ra, Rb, Rc, and Rd shows a part of main chain or side chain of oligomer or polymer, and the other independently shows hydrogen atom, halogen atom, or a specific group.Type: ApplicationFiled: February 18, 2003Publication date: May 12, 2005Inventors: Yukiko Morioka, Masahiro Suguro, Kentaro Nakahara, Tiro Iriyama, Shigeyuki Iwasa, Masahara Satoh
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Publication number: 20040197664Abstract: A battery, which has excellent safety in an overcharged state and is excellent in low-temperature characteristics and cycle characteristics, is provided.Type: ApplicationFiled: April 28, 2004Publication date: October 7, 2004Inventors: Jiro Iriyama, Yukiko Morioka, Sigeyuki Iwasa, Kentaro Nakahara, Masaharu Satoh, Masahiro Suguro
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Publication number: 20030082447Abstract: An electrode including a compound acting as an electrode active material and represented by a general formula (1) having a diazine N,N′-dioxide structure. A novel battery with the higher specific density and the excellent charge and discharge stability can be provided by incorporating the electrode having the compound represented by the general formula (1).Type: ApplicationFiled: October 1, 2002Publication date: May 1, 2003Applicant: NEC CORPORATIONInventors: Yukiko Morioka, Masaharu Satoh, Shigeyuki Iwasa, Jiro Iriyama, Kentaro Nakahara, Masahiro Suguro
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Patent number: 5846098Abstract: The disclosed capacitor connecting structure can connect two wires to a capacitor simply, while reducing the numbers of parts and connecting steps required. The capacitor connecting structure comprises: a capacitor (27; 85; 141) having two electrodes on both sides thereof; two junction terminals (41; 95, 91; 149) each formed with a pressure-connecting terminal portion (31; 107; 151) pressure-connected to a wire, and an elastic terminal portion (37; 97; 153) electrically connected to an electrode of the capacitor; and an insulating material cover (29; 87; 143) for covering the capacitor and the two junction terminals, respectively. The two electrodes of the capacitor can be connected electrically to the two wires via the two junction terminals, respectively, by pressure-connecting the wire to the pressure-connecting terminal portion of the junction terminal, respectively.Type: GrantFiled: July 30, 1996Date of Patent: December 8, 1998Assignee: Yazaki CorporationInventors: Masaaki Shiga, Masahiro Suguro