Patents by Inventor Masashi Ozawa
Masashi Ozawa 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: 20140005551Abstract: An ultrasound probe includes a piezoelectric material, a signal electrode provided on the piezoelectric material, and a ground electrode provided on the piezoelectric material. Ultrasound waves are emitted from the piezoelectric material by applying a voltage between the signal electrode and the ground electrode. A switching element switches a connection between the signal electrode and the ground electrode from a closed state to an open state, and vice versa, in accordance with a control signal for controlling whether or not to emit the ultrasound waves. The switching element changes from the closed state to the open state in accordance with the control signal for emitting the ultrasound waves, and changes from the open state to the closed state in accordance with the control signal for suspending emission of the ultrasound waves. The ultrasound probe can maintain the reliability of the piezoelectric material when the temperature is high or changes suddenly.Type: ApplicationFiled: August 8, 2013Publication date: January 2, 2014Applicant: Panasonic CorporationInventors: Masashi OZAWA, Koetsu SAITO
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Publication number: 20130301189Abstract: An electrolytic capacitor according to the present invention employs a capacitor element wherein an anode foil having an anode internal terminal and a cathode foil having a cathode internal terminal are wound or laminated through a separator. The end of the anode foil faces with the cathode foil through the separator and the surface area of the cathode internal terminal is provided with an enlargement treatment, whereby the small area portion of the cathode foil that faces with the anode foil is eliminated, and the charge/discharge characteristics are thus improved.Type: ApplicationFiled: July 22, 2013Publication date: November 14, 2013Inventors: Fusayoshi ENDOH, Kentaro NAKAAKI, Masashi OZAWA, Koichi YOSHIDA, Osamu NAKAMURA
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Publication number: 20130063868Abstract: A hydrophobic film is formed on the electrode foil surface by adding a straight-chain saturated dicarboxylic acid represented by the general formula: HOOC(CH2)nCOOH (wherein n indicates an integer from 9 to 11) to the electrolytic solution for medium/high-voltage electrolytic capacitor. Addition of a large amount of water to the electrolytic solution is allowed since this hydrophobic film suppresses the hydration reaction between the electrode foil and water. Further, it is possible to retain good lifespan property of the electrolytic capacitor in a medium/high-voltage electrolytic solution by having low specific resistance property and by suppressing the hydration decomposition of the electrode foil, wherein the electrolytic solution is azelaic acid, sebacic acid, 1-methyl-azelaic acid, 1,6-decanedicarboxylic acid, or a salt thereof dissolved in a solvent having ethylene glycol as the main component.Type: ApplicationFiled: March 25, 2011Publication date: March 14, 2013Inventors: Junichi Kawakami, Masao Sakakura, Masashi Ozawa
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Patent number: 8310813Abstract: An electrolytic capacitor sealer is formed of a modified butyl rubber composition obtained by using an organic peroxide to crosslink a modified butyl rubber composition which has been modified by reacting butyl rubber with a compound (a) having in the molecule a nitroxide free radical that is stable at room temperature even in the presence of oxygen, a radical initiator (b), and a bifunctional or higher radical polymerizable monomer (c), and of a modified butyl rubber composition obtained by compounding a radical polymerizable monomer (c) with a modified butyl rubber composition that has been obtained by reacting butyl rubber with a compound (a) having in the molecule a nitroxide free radical that is stable at room temperature even in the presence of oxygen and a radical initiator (b), and then crosslinking the composition thus obtained with an organic peroxide.Type: GrantFiled: March 31, 2008Date of Patent: November 13, 2012Assignees: Nippon Chemi-Con Corporation, The Yokohama Rubber Co., Ltd.Inventors: Hiroaki Fujita, Kazuhiko Kimura, Masatoshi Iemura, Masashi Ozawa, Makoto Ashiura, Tetsuji Kawazura
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High-strength quenched formed body with good corrosion resistance and process for producing the same
Patent number: 8133544Abstract: A high-strength quenched formed body containing a layer on the surface of an after-quenching formed-body steel material in which layer Zn is a major component and which layer contains 30% by mass or less of Fe, and which layer is present in an amount of 30 g/m2 or more. A quenched formed body is produced by quenching a zinc-plated steel material which includes a zinc-plated layer containing each of Al and Si having alloying-retarding function and readily-oxidizing function independently or compositely, in an amount of 0.15% by mass or more, after heating it to 800° C. or more and 950° C. or less in an oxidizing atmosphere containing 0.1% by volume or more of oxygen.Type: GrantFiled: September 13, 2010Date of Patent: March 13, 2012Assignees: Aisin Takaoka Co., Ltd., Nippon Steel CorporationInventors: Shinichi Suzuki, Toshimasa Tomokiyo, Shuuji Souma, Katsuji Nakashima, Masashi Ozawa, Kiyohito Kondou -
Patent number: 7998360Abstract: Provided is an electrolyte containing tetrafluoroaluminate ions, which is advantageous in that the electrolyte can be prevented from leaking from both the cathode and the anode in an electrolytic capacitor.Type: GrantFiled: September 29, 2006Date of Patent: August 16, 2011Assignees: Mitsubishi Chemical Corporation, Nippon Chemi-Con CorporationInventors: Masayuki Takeda, Hiroo Miyauchi, Masashi Ozawa
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HIGH-STRENGTH QUENCHED FORMED BODY WITH GOOD CORROSION RESISTANCE AND PROCESS FOR PRODUCING THE SAME
Publication number: 20110117382Abstract: In zinc-system-plated steel materials, a high-strength quenched formed body, in which the corrosion resistance of after-quenching formed products is equal to or more than that of cold-molded products, and a production process for the same are provided. The high-strength quenched formed body contains a layer, in which Zn is a major component and which is formed of Fe: 30% by mass or less, in an amount of 30 g/m2 or more on the surface of an after-quenching formed-body steel material, and accordingly is good in corrosion resistance. A quenched formed body is produced by quenching a zinc-plated steel material, which includes a zinc-plated layer which contains each of Al and Si having alloying-retarding function and readily-oxidizing function independently or compositely, in an amount of 0.15% by mass or more, after heating it to 800° C. or more and 950° C. or less in an oxidizing atmosphere of oxygen: 0.1% by volume or more.Type: ApplicationFiled: January 24, 2011Publication date: May 19, 2011Applicant: AISIN TAKAOKA CO., LTD.Inventors: SHINICHI SUZUKI, TOSHIMASA TOMOKIYO, SHUUJI SOUMA, KATSUJI NAKASHIMA, MASASHI OZAWA, KIYOHITO KONDOU -
High-strength quenched formed body with good corrosion resistance and process for producing the same
Patent number: 7892605Abstract: A high-strength quenched formed body containing a layer on the surface of an after-quenching formed-body steel material in which layer Zn is a major component and which layer contains 30% by mass or less of Fe, and which layer is present in an amount of 30 g/m2 or more. A quenched formed body is produced by quenching a zinc-plated steel material which includes a zinc-plated layer containing each of Al and Si having alloying-retarding function and readily-oxidizing function independently or compositely, in an amount of 0.15% by mass or more, after heating it to 800° C. or more and 950° C. or less in an oxidizing atmosphere containing 0.1% by volume or more of oxygen.Type: GrantFiled: July 8, 2005Date of Patent: February 22, 2011Assignees: Aisin Takaoka Co., Ltd., Nippon Steel CorporationInventors: Shinichi Suzuki, Toshimasa Tomokiyo, Shuuji Souma, Katsuji Nakashima, Masashi Ozawa, Kiyohito Kondou -
HIGH-STRENGTH QUENCHED FORMED BODY WITH GOOD CORROSION RESISTANCE AND PROCESS FOR PRODUCING THE SAME
Publication number: 20100326570Abstract: A high-strength quenched formed body containing a layer on the surface of an after-quenching formed-body steel material in which layer Zn is a major component and which layer contains 30% by mass or less of Fe, and which layer is present in an amount of 30 g/m2 or more. A quenched formed body is produced by quenching a zinc-plated steel material which includes a zinc-plated layer containing each of Al and Si having alloying-retarding function and readily-oxidizing function independently or compositely, in an amount of 0.15% by mass or more, after heating it to 800° C. or more and 950° C. or less in an oxidizing atmosphere containing 0.1% by volume or more of oxygen.Type: ApplicationFiled: September 13, 2010Publication date: December 30, 2010Applicants: AISIN TAKAOKA CO., LTD., NIPPON STEEL CORPORATIONInventors: Shinichi Suzuki, Toshimasa Tomokiyo, Shuuji Souma, Katsuji Nakashima, Masashi Ozawa, Kiyohito Kondou -
Publication number: 20100285328Abstract: A current density changing portion is formed in a heating process on an upper base side with respect to a center portion of a flat metal plate in a direction of current flow, by passing current from a lower base side to the upper base side of the flat metal plate which is rectangular when viewed from above. As a result, a quenchable portion is formed on the upper base side with respect to the center portion of the flat metal plate in the direction of current flow, and a non-quenchable portion is formed on the lower base side with respect to the center portion of the flat metal plate in the direction of current flow. The flat metal plate is press-formed after the heating process, so a complex die cooling structure is not necessary during press-forming, which enables the die cost to be reduced.Type: ApplicationFiled: May 14, 2009Publication date: November 11, 2010Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN TAKAOKA CO., LTD.Inventors: Kiyoshi Nonomura, Hiroshi Sato, Hideaki Ikezawa, Yuki Ishiguro, Masashi Ozawa
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Publication number: 20100232088Abstract: An electrolytic capacitor sealer capable of fulfilling the requirement such as long-term heat resistance without risk of reversion due to crosslinking with an organic peroxide and an electrolytic capacitor using such a sealer are provided.Type: ApplicationFiled: March 31, 2008Publication date: September 16, 2010Inventors: Hiroaki Fujita, Kazuhiko Kimura, Masatoshi Iemura, Masashi Ozawa, Makoto Ashiura, Tetsuji Kawazura
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Patent number: 7648459Abstract: An ultrasonic probe according to the present invention includes: an ultrasonic element for transmitting and receiving an ultrasonic signal; a signal line for transmitting an electric signal to or from the ultrasonic element; and a ground line for supplying a ground potential to the ultrasonic element. The ultrasonic element is connected electrically with a sensor signal substrate and a sensor ground substrate. These substrates are connected electrically with the signal line and the ground line, respectively, via a cable substrate. The sensor ground substrate and the cable substrate are connected directly or via a relay ground substrate.Type: GrantFiled: March 24, 2004Date of Patent: January 19, 2010Assignee: Panasonic CorporationInventors: Junichi Takeda, Masashi Ozawa
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Publication number: 20090303664Abstract: An electrolytic capacitor employs a capacitor element wherein an anode foil having an anode internal terminal and a cathode foil having a cathode internal terminal are wound or laminated through a separator. The end of the anode foil faces the cathode foil through the separator and the surface area of the cathode internal terminal is provided with an enlargement treatment, whereby the small area portion of the cathode foil that faces with the anode foil is eliminated, improving the charge/discharge characteristics. Furthermore, in the electrolytic capacitor provided with the capacitor element wherein the anode foil having the anode internal terminal and the cathode foil having the cathode internal terminal are wound or laminated through the separator, the capacitor element being impregnated with an electrolyte, the cathode internal terminal includes an aluminum material, the surface of the cathode internal terminal is etched and iron concentration in the etching layer <300 ppm.Type: ApplicationFiled: November 15, 2006Publication date: December 10, 2009Applicant: NIPPON CHEMI-CON CORPORATIONInventors: Fusayoshi Endoh, Kentaro Nakaaki, Masashi Ozawa, Koichi Yoshida, Osamu Nakamura
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Patent number: 7492572Abstract: An electrolytic capacitor having a low impedance characteristic, having a high withstand voltage characteristic of 100V class, wherein the electrolytic capacitor provides an excellent high temperature life characteristic. The electrolyte solution containing the aluminum tetrafluoride salt is used. The moisture content of the capacitor element is adjusted to 0.7% by weight or less, wit respect to the weight of the capacitor element, preferably 0.5% by weight or less, and most preferably 0.4% by weight or less. In this way, the electrolytic capacitor having the low impedance characteristic and the high resistance voltage characteristic, and the excellent high temperature life characteristic is provided.Type: GrantFiled: November 7, 2003Date of Patent: February 17, 2009Assignees: Nippon Chemi-Con Corporation, Mitsubishi Chemical CorporationInventors: Masashi Ozawa, Masayuki Takeda, Makoto Ue
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Publication number: 20090034161Abstract: Provided is an electrolytic capacitor which is advantageous in that an electrolyte is remarkably prevented from leaking from the anode. The present invention is directed to an electrolytic capacitor comprising: a capacitor element which comprises an anode foil with an anode lead means and a cathode foil with a cathode lead means being spirally wound together with a separator disposed therebetween, the capacitor element being impregnated with an electrolyte; a casing for containing therein the capacitor element; and a closure for sealing up an opening portion of the casing, wherein the anode lead means has a ceramic coating layer and/or an insulating synthetic resin layer at least part of the portion in contact with the closure.Type: ApplicationFiled: September 29, 2006Publication date: February 5, 2009Applicants: MITSUBISHI CHEMICAL CORPORATION, NIPPON CHEMI-CON CORPORATIONInventors: Masayuki Takeda, Hiroo Miyauchi, Masashi Ozawa
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Publication number: 20090034160Abstract: Provided is an electrolyte containing tetrafluoroaluminate ions, which is advantageous in that the electrolyte can be prevented from leaking from both the cathode and the anode in an electrolytic capacitor.Type: ApplicationFiled: September 29, 2006Publication date: February 5, 2009Applicants: MITSUBISHI CHEMICAL CORPORATION, NIPPON CHEMI-CON CORPORATIONInventors: Masayuki Takeda, Hiroo Miyauchi, Masashi Ozawa
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Patent number: 7430108Abstract: Electrolyte solution and an electrolytic capacitor using it having a low impedance characteristic, having a high withstand voltage characteristic of 100V class, and a high temperature life characteristic is provided. The electrolyte solution containing an aluminum tetrafluoride salt, and a solvent with high boiling point, such as sulfolane, 3-methyl sulfolane, and 2,4-dimethyl sulfolane, and the like are used. The electrolytic capacitor of the present invention has a low impedance characteristic, a high withstand voltage characteristic, and an excellent high temperature life characteristic.Type: GrantFiled: November 7, 2003Date of Patent: September 30, 2008Assignees: Nippon Chemi-con Corporation, Mitsubishi Chemical CorporationInventors: Masashi Ozawa, Minoru Wada, Masayuki Takeda, Makoto Ue
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High-Strength Quenched Formed Body with Good Corrosion Resistance and Process for Producing the Same
Publication number: 20080075970Abstract: In zinc-system-plated steel materials, a high-strength quenched formed body, in which the corrosion resistance of after-quenching formed products is equal to or more than that of cold-molded products, and a production process for the same are provided. The high-strength quenched formed body contains a layer, in which Zn is a major component and which is formed of Fe: 30% by mass or less, in an amount of 30 g/m2 or more on the surface of an after-quenching formed-body steel material, and accordingly is good in corrosion resistance. A quenched formed body is produced by quenching a zinc-plated steel material, which includes a zinc-plated layer which contains each of Al and Si having alloying-retarding function and readily-oxidizing function independently or compositely, in an amount of 0.15% by mass or more, after heating it to 800° C. or more and 95° C. or less in an oxidizing atmosphere of oxygen: 0.1% by volume or more.Type: ApplicationFiled: July 8, 2005Publication date: March 27, 2008Applicant: Aisin Takaoka Co., Ltd.Inventors: Shinichi Suzuki, Toshimasa Tomokiyo, Shuuji Souma, Katsuji Nakashima, Masashi Ozawa, Kiyohito Kondou -
Publication number: 20080030926Abstract: An electrolytic capacitor having a low impedance characteristic, having a high withstand voltage characteristic of 100V class, wherein the electrolytic capacitor provides an excellent high temperature life characteristic and an excellent leakage characteristic. The electrolyte solution containing the aluminum tetrafluoride salt is used. Moreover, the ceramics coating layer or the insulating synthetic resin layer is formed at a contact portion with the sealing component of the rivet or the cathode leading means. Alternatively, a partial cross-linking peroxide butyl rubber that added peroxide as cross-linking agent to a butyl rubber polymer comprised of isobutylene, isoprene, and divinylbenzene copolymer is used as the sealing member. The electrolytic capacitor of the present invention has a low impedance characteristic, a high withstand voltage characteristic, and an excellent high temperature life characteristic.Type: ApplicationFiled: July 10, 2007Publication date: February 7, 2008Inventors: Masashi OZAWA, Masayuki TAKEDA, Makoto Ue
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Publication number: 20080019079Abstract: An electrolytic capacitor having a low impedance characteristic, having a high withstand voltage characteristic of 100V class, wherein the electrolytic capacitor provides an excellent high temperature life characteristic and an excellent leakage characteristic. The electrolyte solution containing the aluminum tetrafluoride salt is used. The electrolytic capacitor of the present invention has a low impedance characteristic, a high withstand voltage characteristic, and an excellent high temperature life characteristic. Moreover, the aforementioned electrolyte solution is used, and a foil showing noble potential at least in the electrolyte solution than the electrode potential of the cathode tab, or a cathode electrode foil subjected to chemical treatment is used as the cathode electrode foil, so as to obtain an excellent leakage characteristic.Type: ApplicationFiled: July 26, 2007Publication date: January 24, 2008Applicants: NIPPON CHEMI-CON CORPORATION, MITSUBISHI CHEMICAL CORPORATIONInventors: Masashi Ozawa, Masayuki Takeda, Makoto Ue