Patents by Inventor Tadashi Kanasaku
Tadashi Kanasaku 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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Patent number: 10347787Abstract: A conductive paste for forming a solar cell electrode, including: a conductive powder containing silver as a main component; glass frit; and an organic vehicle, wherein the glass frit contains tellurium glass frit having tellurium oxide as a network-forming component. The conductive paste of the present invention makes it possible to form a solar cell electrode having a low dependence on firing temperature without causing problems due to fire-through into the substrate, and to thereby obtain a solar cell having good solar cell characteristics.Type: GrantFiled: August 24, 2017Date of Patent: July 9, 2019Assignees: Shoei Chemical Inc., Heraeus Precious Metals North American Conshohocken LLCInventors: Masami Nakamura, Naoto Shindo, Tadashi Kanasaku
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Patent number: 10249774Abstract: A conductive paste for forming solar cell electrodes that obtains favorable electrical characteristics and sufficient adhesion strength to a substrate. The conductive paste for forming a solar cell electrode includes the following: a tellurium-based glass frit containing 30-70 mol % of tellurium, 15-40 mol % of tungsten, 5-30 mol % of zinc, 0-20 mol % of boron, and 0-10 mol % of zirconium (where a total content of boron and zirconium is greater than 0 mol %) in terms of oxides; a conductive powder having silver as a main component and specific surface area of 0.4 m2/g or more; and an organic vehicle.Type: GrantFiled: March 2, 2016Date of Patent: April 2, 2019Assignee: SHOEI CHEMICAL INC.Inventors: Tadashi Kanasaku, Kousuke Nishimura, Masayuki Kurahashi
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Patent number: 10084100Abstract: A solar cell element containing: a semiconductor substrate; an antireflection film disposed in a first region on one main surface of the semiconductor substrate; and a front surface electrode disposed in a second region on the one main surface of the semiconductor substrate and containing silver as a main component and a tellurium-based glass containing tellurium, tungsten, and bismuth. The solar cell element is manufactured by forming the antireflection film on the one main substrate surface; printing on the antireflection film a conductive paste containing a conductive powder mainly containing silver, a tellurium-based glass frit containing tellurium, tungsten, and bismuth, and an organic vehicle; and disposing the antireflection film in the first region and forming the front surface electrode in the second region, by firing the paste and eliminating the antireflection film positioned under the paste.Type: GrantFiled: October 4, 2011Date of Patent: September 25, 2018Assignees: SHOEI CHEMICAL INC., KYOCERA CORPORATIONInventors: Masami Nakamura, Naoto Shindo, Tadashi Kanasaku, Junichi Atobe
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Publication number: 20180033897Abstract: The present invention has an object of providing a conductive paste for forming solar cell electrodes that obtains favorable electrical characteristics and sufficient adhesion strength to a substrate. The conductive paste for forming a solar cell electrode includes the followings: tellurium-based glass frit containing 30-70 mol % of tellurium, 15-40 mol % of tungsten, 5-30 mol % of zinc, 0-20 mol % of boron, and 0-10 mol % of zirconium (where a total content of boron and zirconium is greater than 0 mol %) in terms of oxides; conductive powder having silver as a main component and specific surface area of 0.4 m2/g or more; and an organic vehicle.Type: ApplicationFiled: March 2, 2016Publication date: February 1, 2018Inventors: Tadashi KANASAKU, Kousuke NISHIMURA, Masayuki KURAHASHI
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Publication number: 20170352773Abstract: A conductive paste for forming a solar cell electrode, including: a conductive powder containing silver as a main component; glass frit; and an organic vehicle, wherein the glass frit contains tellurium glass frit having tellurium oxide as a network-forming component. The conductive paste of the present invention makes it possible to form a solar cell electrode having a low dependence on firing temperature without causing problems due to fire-through into the substrate, and to thereby obtain a solar cell having good solar cell characteristics.Type: ApplicationFiled: August 24, 2017Publication date: December 7, 2017Applicants: SHOEI CHEMICAL INC., HERAEUS PRECIOUS METALS NORTH AMERICA CONSHOHOCKEN LLCInventors: Masami NAKAMURA, Naoto SHINDO, Tadashi KANASAKU
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Publication number: 20160284889Abstract: A conductive paste for a solar cell element front surface electrode that is used to form a front surface electrode of a solar cell element that is provided with a semiconductor substrate, an antireflective film disposed in a first region on one main surface of the semiconductor substrate, and a front surface electrode disposed in a second region on the one main surface of the semiconductor substrate. The conductive paste contains a conductive powder, a mixed glass frit, and an organic vehicle in which the mixed glass frit contains, in the form of mixture, a tellurium-based glass frit containing tellurium, tungsten, and bismuth as essential components and a lead-bismuth-based glass frit that contains lead and bismuth as essential components and that substantially does not contain tellurium.Type: ApplicationFiled: March 20, 2014Publication date: September 29, 2016Applicant: Shoei Chemical Inc.Inventors: Yuji AKIMOTO, Tadashi KANASAKU, Kousuke NISHIMURA, Yoshio MIURA
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Patent number: 9064616Abstract: A conductive paste includes a conductive powder containing at least one of copper and nickel as a main component, a glass frit, and an organic vehicle, wherein the glass frit is a tellurium-based glass frit that essentially does not contain any lead component and contains tellurium as a network former in an amount of 35 to 70 mol % in terms of oxide, the tellurium-based glass frit containing silver as an essential component. The above conductive paste can provide favorable characteristics and favorably be used in the formation of light-receiving surface electrodes of a solar cell element even when the conductive paste includes one or more of copper and nickel as its conductive component.Type: GrantFiled: April 5, 2012Date of Patent: June 23, 2015Assignee: Shoei Chemical Inc.Inventors: Hiroshi Yoshida, Naoto Shindo, Tadashi Kanasaku, Shoko Masuda
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Publication number: 20150122326Abstract: A solar cell device including an electrode formed by applying a conductive paste containing at least a conductive powder, glass frit and an organic vehicle onto a semiconductor substrate provided with a silicon nitride layer on a surface thereof and firing the applied conductive paste, wherein the electrode has a structure with a front electrode layer containing silver as a main component, a glass layer containing tellurium glass as a main component, and a silicon oxide layer containing plural silver particles precipitated by the firing. The solar cell device is provided with an electrode formed using a conductive paste not containing lead glass and has good solar cell characteristics.Type: ApplicationFiled: January 12, 2015Publication date: May 7, 2015Inventors: Yuji AKIMOTO, Masami NAKAMURA, Naoto SHINDO, Tadashi KANASAKU
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Patent number: 8962981Abstract: A solar cell device including an electrode formed by applying a conductive paste containing at least a conductive powder, glass frit and an organic vehicle onto a semiconductor substrate provided with a silicon nitride layer on a surface thereof and firing the applied conductive paste, wherein the electrode has a structure with a front electrode layer containing silver as a main component, a glass layer containing tellurium glass as a main component, and a silicon oxide layer containing plural silver particles precipitated by the firing. The solar cell device is provided with an electrode formed using a conductive paste not containing lead glass and has good solar cell characteristics.Type: GrantFiled: October 20, 2010Date of Patent: February 24, 2015Assignee: Shoei Chemical Inc.Inventors: Yuji Akimoto, Masami Nakamura, Naoto Shindo, Tadashi Kanasaku
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Publication number: 20140008587Abstract: A conductive paste includes a conductive powder containing at least one of copper and nickel as a main component, a glass frit, and an organic vehicle, wherein the glass frit is a tellurium-based glass frit that essentially does not contain any lead component and contains tellurium as a network former in an amount of 35 to 70 mol % in terms of oxide, the tellurium-based glass frit containing silver as an essential component. The above conductive paste can provide favorable characteristics and favorably be used in the formation of light-receiving surface electrodes of a solar cell element even when the conductive paste includes one or more of copper and nickel as its conductive component.Type: ApplicationFiled: April 5, 2012Publication date: January 9, 2014Inventors: Hiroshi Yoshida, Naoto Shindo, Tadashi Kanasaku, Shoko Masuda
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Publication number: 20140004649Abstract: A conductive paste for forming a solar cell electrode, including: a conductive powder comprising silver as a main component; glass frit; and an organic vehicle, wherein the glass frit contains tellurium glass frit having tellurium oxide as a network-forming component. The conductive paste of the present invention makes it possible to form a solar cell electrode having a low dependence on firing temperature without causing problems due to fire-through into the substrate, and to thereby obtain a solar cell having good solar cell characteristics.Type: ApplicationFiled: September 3, 2013Publication date: January 2, 2014Inventors: Masami NAKAMURA, Naoto SHINDO, Tadashi KANASAKU
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Patent number: 8551368Abstract: A conductive paste for forming a solar cell electrode, including: a conductive powder containing silver as a main component; glass frit; and an organic vehicle, wherein the glass frit contains tellurium glass frit having tellurium oxide as a network-forming component. The conductive paste of the present invention makes it possible to form a solar cell electrode having a low dependence on firing temperature without causing problems due to fire-through into the substrate, and to thereby obtain a solar cell having good solar cell characteristics.Type: GrantFiled: October 20, 2010Date of Patent: October 8, 2013Assignee: Shoei Chemical Inc.Inventors: Masami Nakamura, Naoto Shindo, Tadashi Kanasaku
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Publication number: 20130167923Abstract: A solar cell element containing: a semiconductor substrate; an antireflection film disposed in a first region on one main surface of the semiconductor substrate; and a front surface electrode disposed in a second region on the one main surface of the semiconductor substrate and containing silver as a main component and a tellurium-based glass containing tellurium, tungsten, and bismuth. The solar cell element is manufactured by forming the antireflection film on the one main substrate surface; printing on the antireflection film a conductive paste containing a conductive powder mainly containing silver, a tellurium-based glass frit containing tellurium, tungsten, and bismuth, and an organic vehicle; and disposing the antireflection film in the first region and forming the front surface electrode in the second region, by firing the paste and eliminating the antireflection film positioned under the paste.Type: ApplicationFiled: October 4, 2011Publication date: July 4, 2013Inventors: Masami Nakamura, Naoto Shindo, Tadashi Kanasaku, Junichi Atobe
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Publication number: 20110095240Abstract: A conductive paste for forming a solar cell electrode, including: a conductive powder comprising silver as a main component; glass frit; and an organic vehicle, wherein the glass frit contains tellurium glass frit having tellurium oxide as a network-forming component. The conductive paste of the present invention makes it possible to form a solar cell electrode having a low dependence on firing temperature without causing problems due to fire-through into the substrate, and to thereby obtain a solar cell having good solar cell characteristics.Type: ApplicationFiled: October 20, 2010Publication date: April 28, 2011Inventors: Masami Nakamura, Naoto Shindo, Tadashi Kanasaku
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Publication number: 20110094578Abstract: A solar cell device including an electrode formed by applying a conductive paste containing at least a conductive powder, glass frit and an organic vehicle onto a semiconductor substrate provided with a silicon nitride layer on a surface thereof and firing the applied conductive paste, wherein the electrode has a structure comprising a front electrode layer comprising silver as a main component, a glass layer comprising tellurium glass as a main component, and a silicon oxide layer containing plural silver particles precipitated by the firing. The solar cell device is provided with an electrode formed using a conductive paste not containing lead glass and has good solar cell characteristics.Type: ApplicationFiled: October 20, 2010Publication date: April 28, 2011Inventors: Yuji Akimoto, Masami Nakamura, Naoto Shindo, Tadashi Kanasaku
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Patent number: 7476342Abstract: A resistor composition containing: a lead-free ruthenium-based electrically conductive component, a lead-free glass having a glass basicity (Po value) of 0.4 to 0.9, and an organic vehicle; wherein, MSi2Al2O8 crystals (M: Ba and/or Sr) are present in a thick film resistor obtained by firing this composition. The ruthenium-based resistor composition is capable of forming a lead-free thick film resistor which eliminates harmful lead components from an electrically conductive component and glass, and has superior TCR characteristics, current noise characteristics, withstand voltage characteristics and stability after a heat cycling test over a wide resistance range.Type: GrantFiled: September 26, 2006Date of Patent: January 13, 2009Assignee: Shoei Chemical Inc.Inventors: Tadashi Endo, Hiroshi Mashima, Tadashi Kanasaku, Tetsuya Tanaka, Mikio Yamazoe
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Patent number: 7431908Abstract: Spherical tetragonal barium titanate particles of the present invention have a perovskite crystal structure, an average particle diameter of 0.05 to 0.5 ?m, a particle size distribution ?g of not less than 0.70, and a ratio of Ba to Ti of 0.99:1 to 1.01:1. The spherical tetragonal barium titanate particles exhibit an excellent dispersibility as well as a high denseness, a high purity and excellent permittivity properties.Type: GrantFiled: September 13, 2004Date of Patent: October 7, 2008Assignee: Toda Kogyo CorporationInventors: Toshiharu Harada, Yuji Mishima, Seiji Okazaki, Haruki Kurokawa, Hidetomo Unemoto, Kazuyoshi Murashige, Manabu Matsumoto, Tadashi Kanasaku
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Publication number: 20070075301Abstract: A resistor composition comprising: a lead-free ruthenium-based electrically conductive component, a lead-free glass having a glass basicity (Po value) of 0.4 to 0.9, and an organic vehicle; wherein, MSi2Al2O8 crystals (M: Ba and/or Sr) are present in a thick film resistor obtained by firing this composition. The ruthenium-based resistor composition is capable of forming a lead-free thick film resistor which eliminates harmful lead components from an electrically conductive component and glass, and has superior TCR characteristics, current noise characteristics, withstand voltage characteristics and stability after a heat cycling test over a wide resistance range.Type: ApplicationFiled: September 26, 2006Publication date: April 5, 2007Inventors: Tadashi Endo, Hiroshi Mashima, Tadashi Kanasaku, Tetsuya Tanaka, Mikio Yamazoe
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Publication number: 20050031533Abstract: Spherical tetragonal barium titanate particles of the present invention have a perovskite crystal structure, an average particle diameter of 0.05 to 0.5 ?m, a particle size distribution ?g of not less than 0.70, and a ratio of Ba to Ti of 0.99:1 to 1.01:1. The spherical tetragonal barium titanate particles exhibit an excellent dispersibility as well as a high denseness, a high purity and excellent permittivity properties.Type: ApplicationFiled: September 13, 2004Publication date: February 10, 2005Applicant: Toda Kogyo CorporationInventors: Toshiharu Harada, Yuji Mishima, Seiji Okazaki, Haruki Kurokawa, Hidetomo Unemoto, Kazuyoshi Murashige, Manabu Matsumoto, Tadashi Kanasaku
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Patent number: 6808697Abstract: Spherical tetragonal barium titanate particles of the present invention have a perovskite crystal structure, an average particle diameter of 0.05 to 0.5 &mgr;m, a particle size distribution &sgr;g of not less than 0.70, and a ratio of Ba to Ti of 0.99:1 to 1.01:1. The spherical tetragonal barium titanate particles exhibit an excellent dispersibility as well as a high denseness, a high purity and excellent permittivity properties.Type: GrantFiled: November 9, 2001Date of Patent: October 26, 2004Assignee: Toda Kogyo CorporationInventors: Toshiharu Harada, Yuji Mishima, Seiji Okazaki, Haruki Kurokawa, Hidetomo Unemoto, Kazuyoshi Murashige, Manabu Matsumoto, Tadashi Kanasaku