Patents by Inventor Kazutaka Furuta
Kazutaka Furuta 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: 20090126877Abstract: The present invention provides a thermocompression bonding head capable of mounting an electric component on a wiring board in a short time with high connection reliability, and provides a mounting device using the same. A thermocompression bonding head 3 includes a heatable metal head body 5 having an elastic pressure-bonding member 7 made of elastomer and a metal pressing member 5b. The metal pressing member 5b, corresponding to an electric component 20 as a target to be bonded with pressure, is provided as a united body with the head body 5, and the elastic pressure-bonding member 7 is attached to the head body 5 such that a pressing surface 50 of the metal pressing member 5b is exposed in a recessed state on the periphery of the metal pressing member 5b. The head body 5 is made of a frame-shaped member having a concave portion 5a, and the metal pressing member 5b is integrally formed in the concave portion 5a of the head body 5.Type: ApplicationFiled: May 22, 2007Publication date: May 21, 2009Applicant: SONY CHEMICAL & INFORMATION DEVICE CORPORATIONInventors: Kazutaka Furuta, Masaki Taniguchi
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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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Publication number: 20090090001Abstract: A method of producing an electric component-mounted substrate having a cavity structure is provided. Because a supporting substrate and electric components and are connected together to a first face of a base substrate, the number of steps for the connection is reduced to shorten the producing time. When electric components are to be connected to a second face, the base substrate is supported by the supporting substrate, and the electric components and connected to the first face do not contact a processing table and therefore they undergo no damage. Thus, an electric component-mounted substrate having high reliability can be produced in a short time.Type: ApplicationFiled: September 26, 2008Publication date: April 9, 2009Applicant: Sony Chemical & Information Device CorporationInventors: Masaki Taniguchi, Kazutaka Furuta
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Publication number: 20090039291Abstract: An electric device having high reliability is to be produced. An adhesive layer includes a thermosetting resin and a radiation-curable resin, and a portion of the adhesive layer is protruded outwardly from an edge of the electric part. Radiation rays do not pass through the electric part, and the radiation-curable resin is cured in the protruding portion, while the radiation-curable resin in that portion of the adhesive layer which is positioned right behind the electric part is not polymerized. Since the electric part is fixed with the polymerized radiation-curable type resin, the electric part is not misaligned when the electric part is pressed under heating.Type: ApplicationFiled: September 4, 2008Publication date: February 12, 2009Applicant: SONY CHEMICAL & INFORMATION DEVICE CORPORATIONInventors: Kazutaka Furuta, Shiyuki Kanisawa, Masaki Taniguchi
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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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Publication number: 20070159138Abstract: A protection circuit is provided. The protection circuit protects a battery pack from overcurrents and overvoltages using sensing means and a protection device having a heating resistor and a fuse element provided on a circuit board. This protection circuit allows for sharing a protection device regardless of the current rating and the voltage rating of the battery pack, thereby being manufactured at low costs. A protection circuit protects a battery pack having serially connected rechargeable batteries from overcurrents and overvoltages. The protection circuit includes a protection device having heating resistors and fuse elements provided on a circuit board, and sensing means for detecting an overvoltage across any of the batteries in the battery pack and switching a current flowing into the heating resistor. The protection circuit allows the sensing means in an overvoltage condition to switch on the current flowing through the heating resistor.Type: ApplicationFiled: September 6, 2005Publication date: July 12, 2007Applicant: SONY CHEMICAL & INFORMATION DEVICE CORPORATIONInventors: Yuji Furuuchi, Kazutaka Furuta, Masami Kawazu
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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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Patent number: 7079003Abstract: A secondary battery of the present invention a heat-sensitive element which varies in resistance value due to change of temperature is not placed on a path through which a charge or discharge current flows into or out of a storage battery. Accordingly, when a main switch element generates heat due to an overcurrent, a change in resistance value of the heat-sensitive element resulting from the heat will allow an auxiliary switch to be turned ON, thereby causing first and second auxiliary fuses to be blown. The charge or discharge current causes no power consumption at the heat-sensitive element, thereby providing high efficiency. The heat-sensitive element can be reduced in current capacity for use and it is suitable for compact design.Type: GrantFiled: March 31, 2005Date of Patent: July 18, 2006Assignees: Sony Corporation, Sony Chemical Corp.Inventors: Kazutaka Furuta, Masami Kawazu
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Patent number: 6977343Abstract: The invention provides a heat-sensitive material having a heat shrinkable material (e.g., a heat shrinkable resin) having dispersed therein electrically conductive particles, which shrinks on heating to allow an electric current to flow. The invention also provides a heat-sensitive element having a heat-sensitive material and a pair of electrode terminals which are useful as an over-charge protective element of lithium ion secondary batteries.Type: GrantFiled: May 17, 2001Date of Patent: December 20, 2005Assignees: Sony Corporation, Sony Chemicals CorporationInventors: Kazutaka Furuta, Norikazu Iwasaki
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Publication number: 20050225421Abstract: A secondary battery of the present invention a heat-sensitive element which varies in resistance value due to change of temperature is not placed on a path through which a charge or discharge current flows into or out of a storage battery. Accordingly, when a main switch element generates heat due to an overcurrent, a change in resistance value of the heat-sensitive element resulting from the heat will allow an auxiliary switch to be turned ON, thereby causing first and second auxiliary fuses to be blown. The charge or discharge current causes no power consumption at the heat-sensitive element, thereby providing high efficiency. The heat-sensitive element can be reduced in current capacity for use and it is suitable for compact design.Type: ApplicationFiled: March 31, 2005Publication date: October 13, 2005Applicant: SONY CHEMICALS CORP.Inventors: Kazutaka Furuta, Masami Kawazu
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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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Patent number: 6656304Abstract: A PTC element with reduced thickness is manufactured are lower cost by forming an electrode layer on a surface of a flat-plate-shaped PTC material, such that it extends over the upper and lower surfaces and at least one of the side surfaces thereof, and forming an upper surface electrode and a lower surface electrode so that the terminals thereof are positioned on one of the surfaces of the PTC material, by partially removing the electrode layer 11 to segment it into a region where the electrode layer 11 is present on either of the upper or lower surfaces of the PTC material 1 and a region where it extends over the upper and lower surfaces as well as a side surface.Type: GrantFiled: December 28, 2000Date of Patent: December 2, 2003Assignee: Sony Chemicals Corp.Inventors: Kazutaka Furuta, Norikazu Iwasaki
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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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Patent number: 6556403Abstract: A protective element includes at least three electrodes provided on one PTC material. The PTC material operates as at least two PTC elements. This protective element can be manufactured, with fewer components, in an easy manner, and at lower cost, and can cope with overcurrent and overvoltage.Type: GrantFiled: July 6, 2000Date of Patent: April 29, 2003Assignee: Sony Chemicals CorporationInventors: Kazutaka Furuta, Norikazu Iwasaki
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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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Publication number: 20010043138Abstract: A heat-sensitive material comprising a heat shrinkable material (e.g., a heat shrinkable resin) having dispersed therein electrically conductive particles, which shrinks on heating to allow an electric current to flow. A heat-sensitive element comprising the heat-sensitive material and a pair of electrode terminals is useful as an over-charge protective element of lithium ion secondary batteries.Type: ApplicationFiled: May 17, 2001Publication date: November 22, 2001Applicant: SONY CHEMICALS CORPORATIONInventors: Kazutaka Furuta, Norikazu Iwasaki
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Publication number: 20010008167Abstract: A PTC element with reduced thickness is manufactured are lower cost by forming an electrode layer on a surface of a flat-plate-shaped PTC material, such that it extends over the upper and lower surfaces and at least one of the side surfaces thereof, and forming an upper surface electrode and a lower surface electrode so that the terminals thereof are positioned on one of the surfaces of the PTC material, by partially removing the electrode layer 11 to segment it into a region where the electrode layer 11 is present on either of the upper or lower surfaces of the PTC material 1 and a region where it extends over the upper and lower surfaces as well as a side surface.Type: ApplicationFiled: December 28, 2000Publication date: July 19, 2001Applicant: Sony Chemicals Corp.Inventors: Kazutaka Furuta, Norikazu Iwasaki