Patents by Inventor Masato Isogai
Masato Isogai 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: 20230167322Abstract: A water-based ink includes a pigment, water, a penetrating agent, and a binder resin. The penetrating agent includes a compound of formula (1). x is greater than or equal to 6. The binder resin includes a urethane bond. A content of the binder resin in the water-based ink is greater than 1.0 mass %. The compound of formula (1) is preferably diethylene glycol monohexyl ether. The water-based ink preferably further includes an organic solvent having a solubility parameter (SP) value of 12 to 14.Type: ApplicationFiled: November 29, 2022Publication date: June 1, 2023Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Makito IGUCHI, Nao Mizuno, Masato Isogai
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Publication number: 20230167317Abstract: A water-based ink includes water, a colorant, and a water-soluble organic solvent. The water-soluble organic solvent includes a penetrating agent and a wetting agent. The penetrating agent includes a compound of formula (1), and the wetting agent comprises a compound of formula (2). In formula (1), x is 4 or more, and y is 2 or more, in formula (2), x is 2 or more. An amount of the compound of formula (1) relative to a total mass of the water-based ink is preferably 0.1 to 2.0 mass %. An amount of the compound of formula (2) relative to a total mass of the water-based ink is preferably 1.0 to 10.0 mass %.Type: ApplicationFiled: November 29, 2022Publication date: June 1, 2023Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Nao MIZUNO, Makito IGUCHI, Masato ISOGAI
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Publication number: 20230167318Abstract: A water-based ink includes a colorant, water, a penetrating agent, and a wetting agent. The penetrating agent includes diethylene glycol monohexyl ether (DEHE). The wetting agent includes a compound having an SP value of 12 to 14. A ratio (A/B) of an amount (A) of the compound having an SP value of 12 to 14 to the amount (B) of DEHE is 2.5 or more. The wetting agent preferably includes at least one of triethylene glycol and tripropylene glycol. The ratio (A/B) of the amount (A) of the compound having an SP value of 12 to 14 to the amount (B) of DEHE is preferably 2.5 or more and less than 10.Type: ApplicationFiled: November 29, 2022Publication date: June 1, 2023Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Masato ISOGAI, Makito IGUCHI, Nao MIZUNO
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Patent number: 8947023Abstract: In a memory, the surface temperature and the internal resistance of an assembled battery detected under the condition where a difference between the surface and the internal temperature is within a predetermined value are stored, and an internal temperature diagnosis unit that diagnoses whether or not the internal temperature estimated by an internal temperature estimation unit is correct, detects the internal resistance with an internal resistance calculation unit when the internal temperature estimation unit estimates the internal temperature, searches for an internal resistance corresponding to the surface temperature equal to the estimated internal temperature value from among the stored internal resistances, and diagnoses the estimated internal temperature value based upon the result of comparison of a search result of the internal resistance and the internal resistance detected during internal temperature estimation.Type: GrantFiled: October 14, 2009Date of Patent: February 3, 2015Assignees: Hitachi, Ltd., Hitachi Automotive Systems, Ltd.Inventors: Youhei Kawahara, Akihiko Emori, Akihiko Kudo, Atsuo Suga, Masato Isogai, Kenji Kubo
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Patent number: 8353374Abstract: A battery module includes: a plurality of battery cells; a casing in which the plurality of battery cells are housed; a plurality of conductive members used to electrically connect the plurality of battery cells; a first chamber, formed in the casing, in which the plurality of battery cells are disposed; and a second chamber, formed in the casing and isolated from the first chamber, into which emitted matter from the battery cells is released, wherein: the conductive members and the battery cells are connected together within the second chamber.Type: GrantFiled: November 6, 2009Date of Patent: January 15, 2013Assignees: Hitachi Vehicle Energy, Ltd., Hitachi, Ltd.Inventors: Tatsuo Sugawara, Seiichi Satoh, Yoshihisa Tsurumi, Masato Isogai, Sadashi Seto
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Publication number: 20120256569Abstract: In a memory, the surface temperature and the internal resistance of an assembled battery detected under the condition where a difference between the surface and the internal temperature is within a predetermined value are stored, and an internal temperature diagnosis unit that diagnoses whether or not the internal temperature estimated by an internal temperature estimation unit is correct, detects the internal resistance with an internal resistance calculation unit when the internal temperature estimation unit estimates the internal temperature, searches for an internal resistance corresponding to the surface temperature equal to the estimated internal temperature value from among the stored internal resistances, and diagnoses the estimated internal temperature value based upon the result of comparison of a search result of the internal resistance and the internal resistance detected during internal temperature estimation.Type: ApplicationFiled: October 14, 2009Publication date: October 11, 2012Inventors: Youhei Kawahara, Akihiko Emori, Akihiko Kudo, Atsuo Suga, Masato Isogai, Kenji Kubo
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Publication number: 20100116570Abstract: A battery module includes: a plurality of battery cells; a casing in which the plurality of battery cells are housed; a plurality of conductive members used to electrically connect the plurality of battery cells; a first chamber, formed in the casing, in which the plurality of battery cells are disposed; and a second chamber, formed in the casing and isolated from the first chamber, into which emitted matter from the battery cells is released, wherein: the conductive members and the battery cells are connected together within the second chamber.Type: ApplicationFiled: November 6, 2009Publication date: May 13, 2010Applicants: Hitachi Vehicle Energy, Ltd., Hitachi, Ltd.Inventors: Tatsuo SUGAWARA, Seiichi Satoh, Yoshihisa Tsurumi, Masato Isogai, Sadashi Seto
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Patent number: 7495415Abstract: A DC backup power supply system having a battery a charge-discharge circuit for charging and discharging a power between the battery and a DC line and a control circuit for controlling the charge-discharge circuit, wherein the battery has a number of battery cells and cylindrical portions of the battery cells are laid on an approximately horizontal plane.Type: GrantFiled: May 17, 2005Date of Patent: February 24, 2009Assignees: Hitachi, Ltd., Hitachi Maxwell Ltd., Hitachi Computer Peripherals Co.Inventors: Akihiko Kanouda, Minehiro Nemoto, Fumikazu Takahashi, Masahiro Hamaogi, Yoshihide Takahashi, Takashi Tanabe, Takao Gotou, Masato Isogai, Toshikatsu Miyata
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Patent number: 7245469Abstract: A reliable uninterruptible DC power supply device. The DC backup power supply device includes an AC/DC converter, a DC/DC converter, voltage step-up/down choppers and a battery connected to a DC path of a main circuit connected with a load via a switch, and a microcomputer. In the device, under control of the microcomputer, the voltage step-up/down choppers are first operated under a condition that the MOS FET was turned OFF for self diagnosis of the backup power supply device. Next, the switch is turned ON to execute the remaining self diagnosis. The DC backup power supply device can execute its self diagnosis with a reduced likelihood of danger of exerting an adverse effect on the main circuit and also can exhibit a reliable uninterruptible power supply function.Type: GrantFiled: April 14, 2003Date of Patent: July 17, 2007Assignees: Hitachi, Ltd., Hitachi Maxell, Ltd., Hitachi Computer Peripherals Co., Ltd.Inventors: Minehiro Nemoto, Akihiko Kanouda, Fumikazu Takahashi, Masahiro Hamaogi, Yoshihide Takahashi, Takashi Tanabe, Takao Gotou, Masato Isogai, Toshikatsu Miyata
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Patent number: 7157810Abstract: The present invention reduces the capacity of the AC-DC converter for the peak load and realizes low price and reduction in the volume of the power unit. The apparatus built-in backup power supply has the peak cut function for sharing a part of the load current at the time of peak load from the secondary battery. The two-way DC-DC converter 5 and the secondary battery 4 are installed on the DC output side of the AC-DC converter 3 and a current larger than a predetermined peak cut level is discharged from the secondary battery 4 at the time of peak load. Further, when the load is less than the predetermined cut level, the secondary battery 4 is charged from the AC-DC converter 3 via the two-way DC-DC converter 5. Furthermore, a most suitable peak cut level according to the SOC of the secondary battery and load pattern is automatically set and dynamically changed.Type: GrantFiled: January 12, 2004Date of Patent: January 2, 2007Assignees: Hitachi, Ltd., Hitachi Maxell, Ltd., Hitachi Computer Peripherals Co., Ltd.Inventors: Akihiko Kanouda, Satoru Masuyama, Masato Isogai, Ryouhei Saga, Kenichi Onda, Norikazu Tokunaga
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Patent number: 6977448Abstract: Apparatus built-in backup power supply system has a “peak cut” function for sharing a part of the load current at the time of a peak load using a secondary battery. For this purpose, a two-way DC—DC converter 5 and the secondary battery 4 are installed on the DC output side of the AC-DC converter 3, and that portion of the load current that exceeds a predetermined peak cut level is discharged from the secondary battery 4 during peak loading. When the load is less than the predetermined cut level, the secondary battery 4 is charged from the AC-DC converter 3 via the two-way DC—DC converter 5. A suitable peak cut level is determined according to the state of charge of the secondary battery and load pattern, and is changed dynamically.Type: GrantFiled: April 28, 2003Date of Patent: December 20, 2005Assignees: Hitachi, Ltd., Hitachi Maxwell, Ltd., Hitachi Computer Peripherals Co., Ltd.Inventors: Akihiko Kanouda, Satoru Masuyama, Masato Isogai, Ryouhei Saga, Kenichi Onda, Norikazu Tokunaga
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Publication number: 20050206242Abstract: A DC backup power supply system having a battery a charge-discharge circuit for charging and discharging a power between the battery and a DC line and a control circuit for controlling the charge-discharge circuit, wherein the battery has a number of battery cells and cylindrical portions of the battery cells are laid on an approximately horizontal plane.Type: ApplicationFiled: May 17, 2005Publication date: September 22, 2005Inventors: Akihiko Kanouda, Minehiro Nemoto, Fumikazu Takahashi, Masahiro Hamaogi, Yoshihide Takahashi, Takashi Tanabe, Takao Gotou, Masato Isogai, Toshikatsu Miyata
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Publication number: 20050146223Abstract: An information apparatus including a DC backup power supply system for supplying DC power to the information apparatus. The DC backup power supply system includes a battery pack having a plurality of sets of battery cells, each set including a plurality of serially connected battery cells extending in one direction, and the plurality of sets of the battery cells being disposed in a second direction which is transverse to the first direction. The plurality of sets of battery cells are serially connected to one another, and at least adjacent sets of the battery cells have an insulated sheet disposed therebetween.Type: ApplicationFiled: March 2, 2005Publication date: July 7, 2005Inventors: Akihiko Kanouda, Minehiro Nemoto, Fumikazu Takahashi, Masahiro Hamaogi, Yoshihide Takahashi, Takashi Tanabe, Takao Gotou, Masato Isogai, Toshikatsu Miyata
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Publication number: 20040145926Abstract: The present invention reduces the capacity of the AC-DC converter for the peak load and realizes low price and reduction in the volume of the power unit. The apparatus built-in backup power supply has the peak cut function for sharing a part of the load current at the time of peak load from the secondary battery. The two-way DC-DC converter 5 and the secondary battery 4 are installed on the DC output side of the AC-DC converter 3 and a current larger than a predetermined peak cut level is discharged from the secondary battery 4 at the time of peak load. Further, when the load is less than the predetermined cut level, the secondary battery 4 is charged from the AC-DC converter 3 via the two-way DC-DC converter 5. Furthermore, a most suitable peak cut level according to the SOC of the secondary battery and load pattern is automatically set and dynamically changed.Type: ApplicationFiled: January 12, 2004Publication date: July 29, 2004Inventors: Akihiko Kanouda, Satoru Masuyama, Masato Isogai, Ryouhei Saga, Kenichi Onda, Norikazu Tokunaga
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Publication number: 20030231009Abstract: A reliable uninterruptible DC power supply device. The DC backup power supply device includes an AC/DC converter, a DC/DC converter, voltage step-up/down choppers and a battery connected to a DC path of a main circuit connected with a load via a switching means, and a microcomputer. In the device, under control of the microcomputer, the voltage step-up/down choppers are first operated under a condition that the MOS FET was turned OFF for self diagnosis of the backup power supply device. Next, the switching means is turned ON to execute the remaining self diagnosis. The DC backup power supply device can execute its self diagnosis with a lessened likelihood of danger of exerting an adverse effect on the main circuit and also can exhibit a reliable uninterruptible power supply function.Type: ApplicationFiled: April 14, 2003Publication date: December 18, 2003Inventors: Minehiro Nemoto, Akihiko Kanouda, Fumikazu Takahashi, Masahiro Hamaogi, Yoshihide Takahashi, Takashi Tanabe, Takao Gotou, Masato Isogai, Toshikatsu Miyata
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Publication number: 20030222618Abstract: A DC backup power supply system having a battery; a charge-discharge circuit for charging and discharging a power between the battery and a DC line; and a control circuit for controlling the charge-discharge circuit, wherein the battery has a number of battery cells and cylindrical portions of the battery cells are laid on an approximately horizontal plane.Type: ApplicationFiled: April 14, 2003Publication date: December 4, 2003Inventors: Akihiko Kanouda, Minehiro Nemoto, Fumikazu Takahashi, Masahiro Hamaogi, Yoshihide Takahashi, Takashi Tanabe, Takao Gotou, Masato Isogai, Toshikatsu Miyata
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Publication number: 20030184937Abstract: The present invention reduces the capacity of the AC-DC converter for the peak load and realizes low price and reduction in the volume of the power unit. The apparatus built-in backup power supply has the peak cut function for sharing a part of the load current at the time of peak load from the secondary battery. The two-way DC-DC converter 5 and the secondary battery 4 are installed on the DC output side of the AC-DC converter 3 and a current larger than a predetermined peak cut level is discharged from the secondary battery 4 at the time of peak load. Further, when the load is less than the predetermined cut level, the secondary battery 4 is charged from the AC-DC converter 3 via the two-way DC-DC converter 5. Furthermore, a most suitable peak cut level according to the SOC of the secondary battery and load pattern is automatically set and dynamically changed.Type: ApplicationFiled: April 28, 2003Publication date: October 2, 2003Applicants: Hitachi, Ltd., Hitachi Maxell, Ltd., Hitachi Computer Peripherals Co., Ltd.Inventors: Akihiko Kanouda, Satoru Masuyama, Masato Isogai, Ryouhei Saga, Kenichi Onda, Norikazu Tokunaga
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Patent number: 6593031Abstract: A nickel metal-hydride cell having a paste type nickel positive electrode containing nickel hydroxide and a cobalt conducting aid selected from the group consisting of metal cobalt and cobalt compounds, a negative electrode which comprises a hydrogen absorbing alloy having a composition of the formula: MmNi5−x+yMx in which Mm is a rare earth element, M is a metal element, 0<x<2, and −0.2<y<0.6, a separator interposed between two electrodes, and an alkaline electrolytic solution, where a ratio of C—H to C—Co(II) is 1.3 or less, wherein C—H is a quantity of electricity of a discharge reserve formed in the negative electrode, and C—Co(II) is a quantity of electricity necessary for reducing cobalt oxide in the positive electrode to cobalt(II) oxide.Type: GrantFiled: August 11, 2000Date of Patent: July 15, 2003Assignee: Hitachi Maxell, Ltd.Inventors: Masuhiro Onishi, Hiroshi Fukunaga, Masato Isogai, Ryo Nagai
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Publication number: 20020186576Abstract: The present invention reduces the capacity of the AC-DC converter for the peak load and realizes low price and reduction in the volume of the power unit. The apparatus built-in backup power supply has the peak cut function for sharing a part of the load current at the time of peak load from the secondary battery. The two-way DC-DC converter 5 and the secondary battery 4 are installed on the DC output side of the AC-DC converter 3 and a current larger than a predetermined peak cut level is discharged from the secondary battery 4 at the time of peak load. Further, when the load is less than the predetermined cut level, the secondary battery 4 is charged from the AC-DC converter 3 via the two-way DC-DC converter 5. Furthermore, a most suitable peak cut level according to the SOC of the secondary battery and load pattern is automatically set and dynamically changed.Type: ApplicationFiled: February 27, 2002Publication date: December 12, 2002Inventors: Akihiko Kanouda, Satoru Masuyama, Masato Isogai, Ryouhei Saga, Kenichi Onda, Norikazu Tokunaga
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Patent number: 6430066Abstract: An electric power system comprises a plurality of capacitors connected in series, a plurality of DC-AC conversion circuits converting each DC voltage of the plurality of capacitor to an AC signal that an AC component equivalent to the inter-terminal DC voltage of each of the capacitors is superimposed on the respective DC voltages and a plurality of condenser couplers break the respective DC voltages and output the AC components respectively, and a processing circuit detecting the inter-terminal DC voltage of the corresponding capacitor from the AC component.Type: GrantFiled: March 13, 2001Date of Patent: August 6, 2002Assignees: Hitachi, Ltd., Hitachi Maxell, Ltd.Inventors: Akihiko Emori, Hisao Sonobe, Masato Isogai, Takuya Kinoshita