Patents by Inventor Hisaya Tamura
Hisaya Tamura 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: 20090133898Abstract: It is to provide a flexible flat cable with a carrier tape capable of preventing conductors from being bent without increasing the cost of production. The flexible flat cable with the carrier includes a plurality of flexible flat cables 2 each of which has a plurality of conductors 2a sandwiched between two insulating materials 2b and arrayed substantially in parallel at a prescribed pitch, with the conductors 2a at opposite ends of each flexible flat cable exposed in a prescribed length, and a carrier tape 3 for supporting thereon surfaces of the flexible flat cables on one side thereof. The plural flexible flat cables are continuously arrayed and laminated with the carrier tape 3 in a state in which the conductors are individually cut off in half.Type: ApplicationFiled: June 1, 2007Publication date: May 28, 2009Inventors: Tetsuji Kojima, Hisaya Tamura
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Patent number: 7535332Abstract: A protective element has a heat-generating member and a low-melting metal member on a substrate, in which the low-melting metal member is blown out by the heat generated by the heat-generating member, wherein at least two strips of low-melting metal member are provided as the low-melting metal member, for example, between the pair of electrodes that pass current to the low-melting metal member, so that the lateral cross section of at least part of the low-melting metal member is substantially divided into at least two independent cross sections. This protective element has a shorter and more consistent operating time. It is preferable here to provide at least two strips of low-melting metal member between the pair of electrodes that pass current to the low-melting metal member. It is also preferable to provide one strip of low-melting metal member having a slit in its center, between the pair of electrodes that pass current to the low-melting metal member.Type: GrantFiled: December 5, 2003Date of Patent: May 19, 2009Assignee: Sony Chemicals CorporationInventors: Yuji Furuuchi, Hisaya Tamura, Masahiro Matsuyoshi, Kazutaka Furuta, Masami Kawazu
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Patent number: 7333315Abstract: A secondary battery device 1 including multiple protective circuits U1-U3 connected in parallel and each having two fuses fa, fb connected in series, wherein a terminal tc of each heater h is connected to a switch element 4 via rectifier element D1-D3. Even if a potential difference is generated between terminals tc, no residual current flows because any one of the rectifier elements D1-D3 is reverse-biased.Type: GrantFiled: May 31, 2005Date of Patent: February 19, 2008Assignees: Sony Chemical & Information Device Corporation, Sony CorporationInventors: Masami Kawazu, Hisaya Tamura, Yuji Furuuchi, Masahiro Matsuyoshi, Kazutaka Furuta
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Patent number: 7163757Abstract: A secondary battery with high safety is provided. A heater and a diode are connected in series, and a thermistor is connected in parallel with thus formed series circuit. A fuse is connected in series with thus formed parallel circuit to form a protective circuit, which is attached to an accumulator to complete a secondary battery. In the case of overcharging, the accumulator generates heat so that the thermistor heats up to increase the resistance value. As a result, the current pass through the heater, which generates heat to break the fuse. In the case of short circuit, the diode is reverse-biased and no current passes through the heater so that the fuse does not break.Type: GrantFiled: October 1, 2002Date of Patent: January 16, 2007Assignees: Sony Corp., Sony Chemical & Information Device CorporationInventors: Norikazu Iwasaki, Masami Kawazu, Hisaya Tamura, Kazutaka Furuta
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Publication number: 20050221164Abstract: A secondary battery device 1 including multiple protective circuits U1-U3 connected in parallel and each having two fuses fa, fb connected in series, wherein a terminal tc of each heater h is connected to a switch element 4 via rectifier element D1-D3. Even if a potential difference is generated between terminals tc, no residual current flows because any one of the rectifier elements D1-D3 is reverse-biased.Type: ApplicationFiled: May 31, 2005Publication date: October 6, 2005Applicant: SONY CHEMICALS CORP.Inventors: Masami Kawazu, Hisaya Tamura, Yuji Furuuchi, Masahiro Matsuyoshi, Kazutaka Furuta
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Patent number: 6917505Abstract: A protective circuit for a secondary battery is formed with a heater and a thermistor that are connected in parallel, and a main fuse is connected in series with the parallel circuit. In a secondary battery equipped with this protective circuit, a charging/discharging current passes through the protective circuit and is limited by the operation of the thermistor when the voltage applied during abnormal conditions is relatively low. On the other hand, the current will cause the main fuse to blow when the voltage during abnormal conditions is high.Type: GrantFiled: January 17, 2002Date of Patent: July 12, 2005Assignee: Sony Chemicals Corp.Inventors: Norikazu Iwasaki, Hisaya Tamura, Kazutaka Furuta, Masami Kawazu
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Patent number: 6661633Abstract: The protective element 20A includes a first PTC element 1, as well as a low-melting-point metal member 2, a heat-generating member 3 and a second PTC element. A the PTC material 1′ constituting the first PTC element 1 serves as a substrate for the low-melting-point metal member 2, the heat-generating member 3 or the second PTC element. This protective element using the PTC element can be manufactured easily, with fewer components, and at lower costs. Moreover, the protective element can be made thinner.Type: GrantFiled: July 27, 2000Date of Patent: December 9, 2003Assignee: Sony Chemicals Corp.Inventors: Kazutaka Furuta, Norikazu Iwasaki, Hisaya Tamura
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Publication number: 20030134183Abstract: A heater 13 and a thermistor 14 are connected in parallel, and a main fuse 11 is connected in series with thus formed parallel circuit to form a protective circuit 6. In a secondary battery 5 of the present invention, a charging/discharging current passes through the protective circuit 6, so that current is limited by the operation of the thermistor 14 when the voltage applied during abnormal conditions is relatively low while the main fuse 11 blows when the voltage during abnormal conditions is high.Type: ApplicationFiled: October 4, 2002Publication date: July 17, 2003Inventors: Norikazu Iwasaki, Hisaya Tamura, Kazutaka Furuta, Masami Kawazu
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Publication number: 20030064257Abstract: A secondary battery with high safety is provided. A heater and a diode are connected in series, and a thermistor is connected in parallel with thus formed series circuit. A fuse is connected in series with thus formed parallel circuit to form a protective circuit, which is attached to an accumulator to complete a secondary battery. In the case of overcharging, the accumulator generates heat so that the thermistor heats up to increase the resistance value. As a result, the current pass through the heater, which generates heat to break the fuse. In the case of short circuit, the diode is reverse-biased and no current passes through the heater so that the fuse does not break.Type: ApplicationFiled: October 1, 2002Publication date: April 3, 2003Inventors: Norikazu Iwasaki, Masami Kawazu, Hisaya Tamura, Kazutaka Furuta
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Patent number: 6351361Abstract: An electrical current protection device capable of highly safe and rapid shutoff or suppression of electric current is disclosed. In addition to internal electrical current protection capabilities, external environmental triggers are also provided. The current protection device may include substrate-based thermal metallic fuse, PTC current-suppressing protection, thermal heat elements, integrated-circuit based voltage-drop detector, an FET-based current switch, and an external detector for environmental sensing and trigger.Type: GrantFiled: April 13, 2000Date of Patent: February 26, 2002Assignee: Sony Chemicals CorporationInventors: Masami Kawazu, Hisaya Tamura, Norikazu Iwasaki
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Patent number: 6114672Abstract: A PTC-element to be used as a protective device against overcurrent or overvoltage, of which the volume resistivity does not substantially differ before and after a high temperature processing, such as reflowing of solder, and can be preserved even after having been subjected to repeated tripping, which contains a non-conductive crystalline polymer and a particulate conductor material dispersed in the non-conducting crystalline polymer, wherein the particulate conductor material includes electro-conductive particles having irregular surface contours.Type: GrantFiled: October 6, 1998Date of Patent: September 5, 2000Assignee: Sony CorporationInventors: Norikazu Iwasaki, Hisaya Tamura, Toyoji Yamazaki, Yukio Yamada
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Patent number: 5939217Abstract: A battery having a protecting element which has a simple structure and is easy to be miniaturized to permit installation within the battery cell without altering the structure and the production plan of the battery cell to a considerable extent and which has a function of melting down reliably upon detection of an abnormal state of the temperature or current of the battery.Type: GrantFiled: October 15, 1997Date of Patent: August 17, 1999Assignee: Sony Chemicals CorporationInventors: Hisaya Tamura, Motohide Takeichi, Norikazu Iwasaki
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Patent number: 5764118Abstract: A dielectric filter can be miniaturized. A dielectric filter comprised of a plurality of dielectric resonators (R.sub.1), (R.sub.2) having a dielectric block (11) with an outer conductor (12) and in which a plurality of through-holes (13), (13) bored through the dielectric block (11) and inner conductors (14) provided within the plurality of through-holes (13), (13) so as to be electrically connected on their one end faces to said outer conductor (12). Recesses (15) are formed on the other end faces of the plurality of through-holes (13) of the dielectric block (11), and electrodes (16) are formed within the recesses (15) so as to communicate with the inner conductors (14) to thereby construct an additional capacitance (Cp).Type: GrantFiled: December 20, 1996Date of Patent: June 9, 1998Assignee: Sony Chemicals CorporationInventors: Shoshichi Saito, Yasuji Nishino, Hisaya Tamura