Patents by Inventor Kaname Ueda
Kaname Ueda 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: 20240066865Abstract: A liquid discharge head includes a nozzle layer having a nozzle through which a liquid is discharged from a second side toward a first side, a liquid chamber substrate, and a drive circuit. The nozzle layer includes a vibration layer, a piezoelectric actuator adjacent to the nozzle and over the first side, a circuit connection over the first side, a first protective layer around the circuit connection, a second protective layer over the piezoelectric actuator, a first water-resistant film over the first protective layer, and a second water-resistant film over the second protective layer. The second protective layer is separated from the first protective layer. The first protective layer defines an opening above the circuit connection. The liquid chamber substrate has a liquid chamber communicating with the nozzle. The drive circuit is disposed over the second side and connected to the circuit connection to drive the piezoelectric actuator.Type: ApplicationFiled: January 19, 2022Publication date: February 29, 2024Inventors: Keiji UEDA, Takahiko KURODA, Toshiaki MASUDA, Kaname MORITA
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Patent number: 11594351Abstract: A multilayer chip varistor includes an element body, first and second external electrodes, and first and second electrical conductor groups. The first electrical conductor group includes a first internal electrode connected to the first external electrode, and a first intermediate electrical conductor opposed to the first internal electrode. The second electrical conductor group includes a second internal electrode including a first electrically conductive material and connected to the second external electrode, and a second intermediate electrical conductor opposed to the second internal electrode. At least one of the first and second intermediate electrical conductors includes the second electrically conductive material. The element body includes a low electrical resistance region between the first and second internal electrodes. The second electrically conductive material is diffused in the low electrical resistance region.Type: GrantFiled: November 23, 2021Date of Patent: February 28, 2023Assignee: TDK CORPORATIONInventors: Shin Kagaya, Masayuki Uchida, Naoyoshi Yoshida, Takeshi Yanata, Satoshi Goto, Takeshi Oyanagi, Yusuke Imai, Daiki Suzuki, Kaname Ueda
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Publication number: 20220165460Abstract: A multilayer chip varistor includes an element body, first and second external electrodes, and first and second electrical conductor groups. The first electrical conductor group includes a first internal electrode connected to the first external electrode, and a first intermediate electrical conductor opposed to the first internal electrode. The second electrical conductor group includes a second internal electrode including a first electrically conductive material and connected to the second external electrode, and a second intermediate electrical conductor opposed to the second internal electrode. At least one of the first and second intermediate electrical conductors includes the second electrically conductive material. The element body includes a low electrical resistance region between the first and second internal electrodes. The second electrically conductive material is diffused in the low electrical resistance region.Type: ApplicationFiled: November 23, 2021Publication date: May 26, 2022Applicant: TDK CORPORATIONInventors: Shin KAGAYA, Masayuki UCHIDA, Naoyoshi YOSHIDA, Takeshi YANATA, Satoshi GOTO, Takeshi OYANAGI, Yusuke IMAI, Daiki SUZUKI, Kaname UEDA
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Patent number: 9242902Abstract: A nonlinear resistor ceramic composition includes zinc oxide as main component, and, as subcomponents, with respect to 100 mol of zinc oxide in terms of respective elements, more than 0.05 to less than 30 at. % of oxide of Co, more than 0.05 to less than 20 at. % of oxide of Sr, more than 0.01 to less than 20 at. % of oxides of rare earth except for Sc and Pm, more than 0.01 to less than 10 at. % of oxide of Si and does not include Al, Ga and In. Alternatively, a nonlinear resistor ceramic composition includes zinc oxide as main component, and, as subcomponents, with respect to 100 mol of zinc oxide in terms of respective elements, more than 0.05 at. % and less than 30 at. % of an oxide of Co, more than 0.05 to less than 20 at. % of oxide of Sr, more than 0.01 to less than 20 at. % of oxides of rare earth except for Sc and Pm, more than 0.01 to less than 10 at. % of oxide of Si and more than 0.01 to less than 10 at. % of calcium zirconate in terms of CaZrO3.Type: GrantFiled: April 1, 2011Date of Patent: January 26, 2016Assignee: TDK CORPORATIONInventors: Takahiro Itami, Kaname Ueda
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Patent number: 9087623Abstract: A voltage nonlinear resistor ceramic composition comprises zinc oxide, with respect to 100 mol of said zinc oxide, 0.30 to 10 mol of Co oxide in terms of Co, 0.10 to 10 mol of R oxide (note that R is at least one selected from a group consisting of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu) in terms of R, 0.10 to 5 mol of Cr oxide in terms of Cr, 0.10 to 5 mol of oxide of at least one selected from Ca and Sr respectively in terms of Ca or Sr, 0.0005 to 5 mol of oxide of at least one selected from Al, Ga and In respectively in terms of Al, Ga or In, and 0.10 to 5 mol of barium titanate in terms of BaTiO3.Type: GrantFiled: December 10, 2013Date of Patent: July 21, 2015Assignee: TDK CORPORATIONInventors: Takahiro Itami, Naoyoshi Yoshida, Kaname Ueda
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Publication number: 20140171289Abstract: A voltage nonlinear resistor ceramic composition comprises zinc oxide, with respect to 100 mol of said zinc oxide, 0.30 to 10 mol of Co oxide in terms of Co, 0.10 to 10 mol of R oxide (note that R is at least one selected from a group consisting of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu) in terms of R, 0.10 to 5 mol of Cr oxide in terms of Cr, 0.10 to 5 mol of oxide of at least one selected from Ca and Sr respectively in terms of Ca or Sr, 0.0005 to 5 mol of oxide of at least one selected from Al, Ga and In respectively in terms of Al, Ga or In, and 0.10 to 5 mol of barium titanate in terms of BaTiO3.Type: ApplicationFiled: December 10, 2013Publication date: June 19, 2014Applicant: TDK CorporationInventors: Takahiro ITAMI, Naoyoshi Yoshida, Kaname Ueda
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Patent number: 8552831Abstract: A chip varistor is provided with a varistor section and a plurality of terminal electrodes. The varistor section is comprised of a sintered body containing ZnO as a major component, exhibits the nonlinear voltage-current characteristics, and has a pair of principal surfaces opposed to each other. The plurality of terminal electrodes are connected each to the varistor section. Each of the terminal electrodes has a first electrode portion connected to either of the principal surfaces and a second electrode portion connected to the first electrode portion.Type: GrantFiled: August 16, 2012Date of Patent: October 8, 2013Assignee: TDK CorporationInventors: Kaname Ueda, Katsunari Moriai, Takahiro Itami
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Patent number: 8525634Abstract: A chip varistor is provided with a varistor section, a plurality of electroconductive sections, and a plurality of terminal electrodes. The varistor section is comprised of a sintered body containing ZnO as a major component and is configured to exhibit the nonlinear voltage-current characteristics. The plurality of electroconductive sections are comprised of sintered bodies containing ZnO as a major component and arranged with the varistor section in between, and each electroconductive section has a first principal surface connected to the varistor section and a second principal surface opposed to the first principal surface. The plurality of terminal electrodes are connected respectively to the corresponding electroconductive sections. Each terminal electrode has a first electrode portion connected to the second principal surface and a second electrode portion connected to the first electrode portion.Type: GrantFiled: August 16, 2012Date of Patent: September 3, 2013Assignee: TDK CorporationInventors: Kaname Ueda, Katsunari Moriai, Takahiro Itami
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Patent number: 8508325Abstract: A chip varistor is provided with a varistor section, a plurality of electroconductive sections, and a plurality of terminal electrodes. The varistor section is comprised of a sintered body containing ZnO as a major component and exhibits the nonlinear voltage-current characteristics. The plurality of electroconductive sections are arranged on both sides of the varistor section and each electroconductive section has a first principal surface connected to the varistor section and a second principal surface opposed to the first principal surface. The terminal electrodes are connected to the respective second principal surfaces of the electroconductive sections.Type: GrantFiled: November 14, 2011Date of Patent: August 13, 2013Assignee: TDK CorporationInventors: Kaname Ueda, Katsunari Moriai, Takahiro Itami
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Publication number: 20130049923Abstract: A chip varistor is provided with a varistor section, a plurality of electroconductive sections, and a plurality of terminal electrodes. The varistor section is comprised of a sintered body containing ZnO as a major component and is configured to exhibit the nonlinear voltage-current characteristics. The plurality of electroconductive sections are comprised of sintered bodies containing ZnO as a major component and arranged with the varistor section in between, and each electroconductive section has a first principal surface connected to the varistor section and a second principal surface opposed to the first principal surface. The plurality of terminal electrodes are connected respectively to the corresponding electroconductive sections. Each terminal electrode has a first electrode portion connected to the second principal surface and a second electrode portion connected to the first electrode portion.Type: ApplicationFiled: August 16, 2012Publication date: February 28, 2013Applicant: TDK CORPORATIONInventors: Kaname UEDA, Katsunari MORIAI, Takahiro ITAMI
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Publication number: 20130049922Abstract: A chip varistor is provided with a varistor section and a plurality of terminal electrodes. The varistor section is comprised of a sintered body containing ZnO as a major component, exhibits the nonlinear voltage-current characteristics, and has a pair of principal surfaces opposed to each other. The plurality of terminal electrodes are connected each to the varistor section. Each of the terminal electrodes has a first electrode portion connected to either of the principal surfaces and a second electrode portion connected to the first electrode portion.Type: ApplicationFiled: August 16, 2012Publication date: February 28, 2013Applicant: TDK CORPORATIONInventors: Kaname UEDA, Katsunari MORIAI, Takahiro ITAMI
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Publication number: 20120139688Abstract: A chip varistor is provided with a varistor section, a plurality of electroconductive sections, and a plurality of terminal electrodes. The varistor section is comprised of a sintered body containing ZnO as a major component and exhibits the nonlinear voltage-current characteristics. The plurality of electroconductive sections are arranged on both sides of the varistor section and each electroconductive section has a first principal surface connected to the varistor section and a second principal surface opposed to the first principal surface. The terminal electrodes are connected to the respective second principal surfaces of the electroconductive sections.Type: ApplicationFiled: November 14, 2011Publication date: June 7, 2012Applicant: TDK CORPORATIONInventors: Kaname UEDA, Katsunari MORIAI, Takahiro ITAMI
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Publication number: 20110245065Abstract: A nonlinear resistor ceramic composition includes zinc oxide as main component, and, as subcomponents, with respect to 100 mol of zinc oxide in terms of respective elements, more than 0.05 to less than 30 at. % of oxide of Co, more than 0.05 to less than 20 at. % of oxide of Sr, more than 0.01 to less than 20 at. % of oxides of rare earth except for Sc and Pm, more than 0.01 to less than 10 at. % of oxide of Si and does not include Al, Ga and In. Alternatively, a nonlinear resistor ceramic composition includes zinc oxide as main component, and, as subcomponents, with respect to 100 mol of zinc oxide in terms of respective elements, more than 0.05 at. % and less than 30 at. % of an oxide of Co, more than 0.05 to less than 20 at. % of oxide of Sr, more than 0.01 to less than 20 at. % of oxides of rare earth except for Sc and Pm, more than 0.01 to less than 10 at. % of oxide of Si and more than 0.01 to less than 10 at. % of calcium zirconate in terms of CaZrO3.Type: ApplicationFiled: April 1, 2011Publication date: October 6, 2011Applicant: TDK CORPORATIONInventors: Takahiro ITAMI, Kaname UEDA
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Patent number: 7995326Abstract: A chip-type electronic component has: a ceramic element body; a plurality of first and second internal electrodes arranged in the ceramic element body so as to be opposed at least in part to each other; a first external connection conductor to which the plurality of first internal electrodes are connected; a second external connection conductor to which the plurality of second internal electrodes are connected; first and second terminal electrodes; a first internal connection conductor arranged in the ceramic element body and connecting the first external connection conductor and the first terminal electrode; and a second internal connection conductor arranged in the ceramic element body and connecting the second external connection conductor and the second terminal electrode.Type: GrantFiled: May 21, 2009Date of Patent: August 9, 2011Assignee: TDK CorporationInventors: Kaname Ueda, Dai Matsuoka, Naoki Chida, Izuru Soma, Hisayoshi Saito, Katsunari Moriai
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Publication number: 20090296312Abstract: A chip-type electronic component has: a ceramic element body; a plurality of first and second internal electrodes arranged in the ceramic element body so as to be opposed at least in part to each other; a first external connection conductor to which the plurality of first internal electrodes are connected; a second external connection conductor to which the plurality of second internal electrodes are connected; first and second terminal electrodes; a first internal connection conductor arranged in the ceramic element body and connecting the first external connection conductor and the first terminal electrode; and a second internal connection conductor arranged in the ceramic element body and connecting the second external connection conductor and the second terminal electrode.Type: ApplicationFiled: May 21, 2009Publication date: December 3, 2009Applicant: TDK CORPORATIONInventors: Kaname Ueda, Dai Matsuoka, Naoki Chida, Izuru Soma, Hisayoshi Saito, Katsunari Moriai
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Patent number: 7509717Abstract: A method of production of a multilayer ceramic electronic device having dielectric layers with an interlayer thickness of 5 ?m or less and internal electrode layers including a base metal, including the steps of firing, then annealing a stack comprised of a dielectric layer paste and an internal electrode layer paste including a base metal alternately arranged in 100 layers or more under a reducing atmosphere, treating the annealed stack by first heat treatment under a strong reducing atmosphere of an oxygen partial pressure P3 of over 2.9×10?39 Pa to less than 6.7×10?24 Pa at a holding temperature T3 of over 300° C. to less than 600° C. The stack after the first heat treatment is treated by second heat treatment under an atmosphere of an oxygen partial pressure P4 of over 1.9×10?7 Pa to less than 4.1×10?3 Pa at a holding temperature T4 of over 500° C. to less than 1000° C.Type: GrantFiled: March 23, 2006Date of Patent: March 31, 2009Assignee: TDK CorporationInventors: Takashi Fukui, Kaname Ueda, Shintaro Kon, Arata Sato, Akira Sato
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Patent number: 7295420Abstract: Internal electrode layers are superimposed in a dielectric substrate 1 at intervals. Step absorption layers are respectively provided on lateral sides of the internal electrode layers. A side portion of the internal electrode layer forms an inclined surface, and the step absorption layer is superimposed so as to partially overlap the inclined surface of the internal electrode layer. This is also applied to the other internal electrode layers and step absorption layers.Type: GrantFiled: February 3, 2006Date of Patent: November 13, 2007Assignee: TDK CorporationInventors: Tatsuya Kojima, Kaname Ueda, Toru Tonogai, Raitaro Masaoka, Akinori Iwasaki, Akira Yamaguchi, Shogo Murosawa
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Patent number: 7131174Abstract: A method of production of a ceramic electronic device such as a multilayer ceramic capacitor, comprising forming a first ceramic coating layer on the surface of a substrate, forming an internal electrode on the surface of the first ceramic coating layer, then forming a second ceramic coating layer on the surface of the first ceramic coating layer so as to cover the internal electrode. In this case, when a mean particle size of ceramic particles of the first ceramic coating layer is ?1, a thickness of the first ceramic coating layer is T1, a mean particle size of ceramic particles of the second ceramic coating layer is ?2, and a thickness of the second ceramic coating layer is T2, the conditions of ?1??2, 0.05<?1?0.35 ?m, T1<T2, and 0<T1<1.5 ?m are satisfied. As a result, it is possible to provide a ceramic electronic device, in particular a multilayer ceramic capacitor, resistant to short-circuit defects, withstand voltage defects, and other structural defects.Type: GrantFiled: June 9, 2004Date of Patent: November 7, 2006Assignee: TDK CorporationInventors: Ryou Kobayashi, Kaname Ueda, Yasushi Izumibe, Hitoshi Ishida, Akira Saitoh
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Publication number: 20060213604Abstract: A method of production of a multilayer ceramic electronic device having dielectric layers with an interlayer thickness of 5 ?m or less and internal electrode layers including a base metal, including the steps of firing, then annealing a stack comprised of a dielectric layer paste and an internal electrode layer paste including a base metal alternately arranged in 100 layers or more under a reducing atmosphere, treating the annealed stack by first heat treatment under a strong reducing atmosphere of an oxygen partial pressure P3 of over 2.9×10?39 Pa to less than 6.7×10?24 Pa at a holding temperature T3 of over 300° C. to less than 600° C. The stack after the first heat treatment is treated by second heat treatment under an atmosphere of an oxygen partial pressure P4 of over 1.9×10?7 Pa to less than 4.1×10?3 Pa at a holding temperature T4 of over 500° C. to less than 1000° C.Type: ApplicationFiled: March 23, 2006Publication date: September 28, 2006Applicant: TDK CORPORATIONInventors: Takashi Fukui, Kaname Ueda, Shintaro Kon, Arata Sato, Akira Sato
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Publication number: 20060214263Abstract: Internal electrode layers are superimposed in a dielectric substrate 1 at intervals. Step absorption layers are respectively provided on lateral sides of the internal electrode layers. A side portion of the internal electrode layer forms an inclined surface, and the step absorption layer is superimposed so as to partially overlap the inclined surface of the internal electrode layer. This is also applied to the other internal electrode layers and step absorption layers.Type: ApplicationFiled: February 3, 2006Publication date: September 28, 2006Applicant: TDK CorporationInventors: Tatsuya Kojima, Kaname Ueda, Toru Tonogai, Raitaro Masaoka, Akinori Iwasaki, Akira Yamaguchi, Shogo Murosawa