Patents by Inventor Kaoru Isobe
Kaoru Isobe 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: 10144832Abstract: Provided is a black fine particulate near-infrared reflective material which is a perovskite-type complex oxide containing at least an alkaline earth metal element, titanium element, and manganese element, having a BET specific surface area within a range of 3.0-150 m2/g. The Hunter L value, as an indicator of blackness, is 30 or less, and the reflectivity at a wavelength of 1200 nm, as an indicator of near-infrared reflective power, is 40% or above.Type: GrantFiled: November 27, 2014Date of Patent: December 4, 2018Assignee: ISHIHARA SANGYO KAISHA, LTD.Inventors: Kaoru Isobe, Norihiko Sanefuji, Kenji Kataoka
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Titanium dioxide pigment and method for manufacturing same, and composition in which same is blended
Patent number: 10087329Abstract: Provided is a titanium dioxide pigment having minimal yellow color and minimal yellowing due to exposure, i.e., good yellowing resistance and high pigment performance such as brightness. Also provided is a titanium dioxide pigment which has a reduced amount of volatile moisture and which does not readily decompose when blended with a resin or the like. In the present invention, a compound including 0.05-20% by mass of phosphorus and an alkaline earth metal is present on surfaces of titanium dioxide particles having an average particle diameter of 0.15-1.0 ?m. The titanium dioxide pigment is manufactured by mixing an alkaline earth metal compound, a phosphate compound, and titanium dioxide particles having an average particle diameter of 0.15-1.0 ?m, and bonding the compound including phosphorus and an alkaline earth metal to the titanium dioxide particles.Type: GrantFiled: June 12, 2015Date of Patent: October 2, 2018Assignee: ISHIHARA SANGYO KAISHA, LTDInventors: Kaoru Isobe, Norihiko Sanefuji, Yasutsune Tanida, Kensuke Ohsaki -
Patent number: 9809461Abstract: Titanium dioxide and an electro-conductive titanium oxide which each includes particles having a large major-axis length in a large proportion and comprises columnar particles having a satisfactory particle size distribution. A titanium compound, an alkali metal compound, and an oxyphosphorus compound are heated/fired in the presence of titanium dioxide nucleus crystals having an aspect ratio of 2 or higher to grow the titanium dioxide nucleus crystals. Subsequently, a titanium compound, an alkali metal compound, and an oxyphosphorus compound are further added and heated/fired in the presence of the grown titanium dioxide nucleus crystals. Thus, titanium dioxide is produced which comprises columnar particles having a weight-average major-axis length of 7.0-15.0 ?m and in which particles having a major-axis length of 10 ?m or longer account for 15 wt. % or more of all the particles. A solution of a tin compound and a solution of compounds of antimony, phosphorus, etc.Type: GrantFiled: July 26, 2016Date of Patent: November 7, 2017Assignee: ISHIHARA SANGYO KAISHA, LTD.Inventors: Kaoru Isobe, Katsuichi Chiba, Takanori Sakamoto
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TITANIUM DIOXIDE PIGMENT AND METHOD FOR MANUFACTURING SAME, AND COMPOSITION IN WHICH SAME IS BLENDED
Publication number: 20170130055Abstract: Provided is a titanium dioxide pigment having minimal yellow color and minimal yellowing due to exposure, i.e., good yellowing resistance and high pigment performance such as brightness. Also provided is a titanium dioxide pigment which has a reduced amount of volatile moisture and which does not readily decompose when blended with a resin or the like. In the present invention, a compound including 0.05-20% by mass of phosphorus and an alkaline earth metal is present on surfaces of titanium dioxide particles having an average particle diameter of 0.15-1.0 ?m. The titanium dioxide pigment is manufactured by mixing an alkaline earth metal compound, a phosphate compound, and titanium dioxide particles having an average particle diameter of 0.15-1.0 ?m, and bonding the compound including phosphorus and an alkaline earth metal to the titanium dioxide particles.Type: ApplicationFiled: June 12, 2015Publication date: May 11, 2017Inventors: Kaoru ISOBE, Norihiko SANEFUJI, Yasutsune TANIDA, Kensuke OHSAKI -
Publication number: 20170029627Abstract: Provided is a black fine particulate near-infrared reflective material having exceptional hiding performance and coloring performance. A black fine particulate near-infrared reflective material which is a perovskite-type complex oxide containing at least an alkaline earth metal element, titanium element, and manganese element, wherein the black fine particulate near-infrared reflective material comprises microparticles in which the BET specific surface area of the powder body is within a range of 3.0-150 m2/g, the black fine particulate near infrared reflective material having exceptional hiding performance and coloring performance. The Hunter L value, as an indicator of blackness, is 30 or less, and the reflectivity at a wavelength of 1200 nm, as an indicator of near-infrared reflective power, is 40% or above.Type: ApplicationFiled: November 27, 2014Publication date: February 2, 2017Inventors: Kaoru ISOBE, Norihiko SANEFUJI, Kenji KATAOKA
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Publication number: 20160376160Abstract: Titanium dioxide and an electro-conductive titanium oxide which each includes particles having a large major-axis length in a large proportion and comprises columnar particles having a satisfactory particle size distribution. A titanium compound, an alkali metal compound, and an oxyphosphorus compound are heated/fired in the presence of titanium dioxide nucleus crystals having an aspect ratio of 2 or higher to grow the titanium dioxide nucleus crystals. Subsequently, a titanium compound, an alkali metal compound, and an oxyphosphorus compound are further added and heated/fired in the presence of the grown titanium dioxide nucleus crystals. Thus, titanium dioxide is produced which comprises columnar particles having a weight-average major-axis length of 7.0-15.0 ?m and in which particles having a major-axis length of 10 ?m or longer account for 15 wt. % or more of all the particles. A solution of a tin compound and a solution of compounds of antimony, phosphorus, etc.Type: ApplicationFiled: July 26, 2016Publication date: December 29, 2016Inventors: Kaoru ISOBE, Katsuichi CHIBA, Takanori SAKAMOTO
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Patent number: 9428400Abstract: Titanium dioxide and an electro-conductive titanium oxide which each includes particles having a large major-axis length in a large proportion and comprises columnar particles having a satisfactory particle size distribution. A titanium compound, an alkali metal compound, and an oxyphosphorus compound are heated/fired in the presence of titanium dioxide nucleus crystals having an aspect ratio of 2 or higher to grow the titanium dioxide nucleus crystals. Subsequently, a titanium compound, an alkali metal compound, and an oxyphosphorus compound are further added and heated/fired in the presence of the grown titanium dioxide nucleus crystals. Thus, titanium dioxide is produced which comprises columnar particles having a weight-average major-axis length of 7.0-15.0 ?m and in which particles having a major-axis length of 10 ?m or longer account for 15 wt. % or more of all the particles. A solution of a tin compound and a solution of compounds of antimony, phosphorus, etc.Type: GrantFiled: November 24, 2014Date of Patent: August 30, 2016Assignee: ISHIHARA SANGYO KAISHA, LTD.Inventors: Kaoru Isobe, Katsuichi Chiba, Takanori Sakamoto
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Publication number: 20150104374Abstract: Titanium dioxide and an electro-conductive titanium oxide which each includes particles having a large major-axis length in a large proportion and comprises columnar particles having a satisfactory particle size distribution. A titanium compound, an alkali metal compound, and an oxyphosphorus compound are heated/fired in the presence of titanium dioxide nucleus crystals having an aspect ratio of 2 or higher to grow the titanium dioxide nucleus crystals. Subsequently, a titanium compound, an alkali metal compound, and an oxyphosphorus compound are further added and heated/fired in the presence of the grown titanium dioxide nucleus crystals. Thus, titanium dioxide is produced which comprises columnar particles having a weight-average major-axis length of 7.0-15.0 ?m and in which particles having a major-axis length of 10 ?m or longer account for 15 wt. % or more of all the particles. A solution of a tin compound and a solution of compounds of antimony, phosphorus, etc.Type: ApplicationFiled: November 24, 2014Publication date: April 16, 2015Applicant: ISHIHARA SANGYO KAISHA, LTD.Inventors: Kaoru ISOBE, Katsuichi CHIBA, Takanori SAKAMOTO
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Patent number: 8926713Abstract: Titanium dioxide which includes particles having a large major-axis length in a large proportion and comprises columnar particles having a satisfactory particle size distribution. A titanium compound, an alkali metal compound, and an oxyphosphorus compound are heated/fired in the presence of titanium dioxide nucleus crystals having an aspect ratio of 2 or higher to grow the titanium dioxide nucleus crystals. Subsequently, a titanium compound, an alkali metal compound, and an oxyphosphorus compound are further added and heated/fired in the presence of the grown titanium dioxide nucleus crystals. Thus, titanium dioxide is produced which comprises columnar particles having a weight-average major-axis length of 7.0-15.0 ?m and in which particles having a major-axis length of 10 ?m or longer account for 15 wt. % or more of all the particles.Type: GrantFiled: June 4, 2012Date of Patent: January 6, 2015Assignee: Ishihara Sangyo Kaisha, Ltd.Inventors: Kaoru Isobe, Katsuichi Chiba, Takanori Sakamoto
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Publication number: 20120288711Abstract: Titanium dioxide which includes particles having a large major-axis length in a large proportion and comprises columnar particles having a satisfactory particle size distribution. A titanium compound, an alkali metal compound, and an oxyphosphorus compound are heated/fired in the presence of titanium dioxide nucleus crystals having an aspect ratio of 2 or higher to grow the titanium dioxide nucleus crystals. Subsequently, a titanium compound, an alkali metal compound, and an oxyphosphorus compound are further added and heated/fired in the presence of the grown titanium dioxide nucleus crystals. Thus, titanium dioxide is produced which comprises columnar particles having a weight-average major-axis length of 7.0-15.0 ?m and in which particles having a major-axis length of 10 ?m or longer account for 15 wt. % or more of all the particles.Type: ApplicationFiled: June 4, 2012Publication date: November 15, 2012Inventors: Kaoru ISOBE, Katsuichi Chiba, Takanori Sakamoto
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Patent number: 8227083Abstract: Titanium dioxide and an electro-conductive titanium oxide which each includes particles having a large major-axis length in a large proportion and comprises columnar particles having a satisfactory particle size distribution. A titanium compound, an alkali metal compound, and an oxyphosphorus compound are heated/fired in the presence of titanium dioxide nucleus crystals having an aspect ratio of 2 or higher to grow the titanium dioxide nucleus crystals. Subsequently, a titanium compound, an alkali metal compound, and an oxyphosphorus compound are further added and heated/fired in the presence of the grown titanium dioxide nucleus crystals. Thus, titanium dioxide is produced which comprises columnar particles having a weight-average major-axis length of 7.0-15.0 ?m and in which particles having a major-axis length of 10 ?m or longer account for 15 wt. % or more of all the particles. A solution of a tin compound and a solution of compounds of antimony, phosphorus, etc.Type: GrantFiled: March 6, 2007Date of Patent: July 24, 2012Assignee: Ishihara Sangyo Kaisha, Ltd.Inventors: Kaoru Isobe, Katsuichi Chiba, Takanori Sakamoto
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Patent number: 7785501Abstract: A black resin composition for a display device, which can achieve a high optical density even when its light-blocking agent content is relatively low and can achieve a high optical density even when it is formed into a thin film, and a member for display device which can reduce unevenness of display caused by a level difference in a pixel part resulting from the film thickness of the black resin composition. The black resin composition for a display device has a black titanium oxynitride represented by composition formula: TiNxOy-nSiO2 (wherein x and y each are a real number of larger than 0 but less than 2, and n is a real number within the range of 0 less than or equal to n less than or equal to 0.05), containing a nitrogen atom represented by N in an amount of 17 wt % or more but less than 23 wt %, and having a specific surface area of 5 to 30 m2/g and a crystalline size as measured with an X-ray diffractometer of 17 to 25 nm, and a curable binder system.Type: GrantFiled: December 27, 2005Date of Patent: August 31, 2010Assignees: Dai Nippon Printing Co., Ltd., Ishihara Sangyo Kaisha, Ltd.Inventors: Hiroaki Segawa, Kei Ikegami, Sachie Furukawa, Hideo Takahashi, Kaoru Isobe, Katsuichi Chiba, Yuichi Yasuda
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Publication number: 20090117383Abstract: Titanium dioxide and an electro-conductive titanium oxide which each includes particles having a large major-axis length in a large proportion and comprises columnar particles having a satisfactory particle size distribution. A titanium compound, an alkali metal compound, and an oxyphosphorus compound are heated/fired in the presence of titanium dioxide nucleus crystals having an aspect ratio of 2 or higher to grow the titanium dioxide nucleus crystals. Subsequently, a titanium compound, an alkali metal compound, and an oxyphosphorus compound are further added and heated/fired in the presence of the grown titanium dioxide nucleus crystals. Thus, titanium dioxide is produced which comprises columnar particles having a weight-average major-axis length of 7.0-15.0 ?m and in which particles having a major-axis length of 10 ?m or longer account for 15 wt. % or more of all the particles. A solution of a tin compound and a solution of compounds of antimony, phosphorus, etc.Type: ApplicationFiled: March 6, 2007Publication date: May 7, 2009Inventors: Kaoru Isobe, Katsuichi Chiba, Takanori Sakamoto
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Patent number: 7491349Abstract: Disclosed is a titanium oxynitride with excellent hiding properties (light-blocking properties) which is also excellent in degree of blackness and oxidation stability. Specifically disclosed is a titanium oxynitride having a chemical composition expresses as TiNxOy.nSiO2 (wherein Ti represents titanium atoms; N represents nitrogen atoms; O represents oxygen atoms; Si represents silicon atoms; x represents the ratio of nitrogen atoms relative to titanium atoms, y represents the ratio of oxygen atoms relative to titanium atoms, and x and y are respectively a real number of more than 0 but less than 2; and n represents the molar ratio of SiO2 relative to TiNxOy which is a real number within a range of 0?n?0.05). This titanium oxynitride contains nitrogen atoms represented by N in an amount of not less than 17% by weight but less than 23% by weight, while having a specific surface area of 5-30 m2/g and a crystallite size determined by using an X-ray diffractometer of 17-25 nm.Type: GrantFiled: December 27, 2005Date of Patent: February 17, 2009Assignee: Ishihara Sangyo Kaisha, Ltd.Inventors: Hideo Takahashi, Kaoru Isobe, Katsuichi Chiba, Yuichi Yasuda
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Publication number: 20080318018Abstract: A black resin composition for a display device, which can achieve a high optical density even when its light-blocking agent content is relatively low and can achieve a high optical density even when it is formed into a thin film, and a member for display device which can reduce unevenness of display caused by a level difference in a pixel part resulting from the film thickness of the black resin composition. The black resin composition for a display device has a black titanium oxynitride represented by composition formula: TiNxOy-nSiO2 (wherein x and y each are a real number of larger than 0 but less than 2, and n is a real number within the range of 0?n?0.05), containing a nitrogen atom represented by N in an amount of 17 wt % or more but less than 23 wt %, and having a specific surface area of 5 to 30 m2/g and a crystalline size as measured with an X-ray diffractometer of 17 to 25 nm, and a curable binder system.Type: ApplicationFiled: December 27, 2005Publication date: December 25, 2008Inventors: Hiroaki Segawa, Kei Ikegami, Sachie Furukawa, Hideo Takahashi, Kaoru Isobe, Katsuichi Chiba, Yuichi Yasuda
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Publication number: 20080017835Abstract: Disclosed is a titanium oxynitride with excellent hiding properties (light-blocking properties) which is also excellent in degree of blackness and oxidation stability. Specifically disclosed is a titanium oxynitride having a chemical composition expresses as TiNxOy.nSiO2 (wherein Ti represents titanium atoms; N represents nitrogen atoms; O represents oxygen atoms; Si represents silicon atoms; x represents the ratio of nitrogen atoms relative to titanium atoms, y represents the ratio of oxygen atoms relative to titanium atoms, and x and y are respectively a real number of more than 0 but less than 2; and n represents the molar ratio of SiO2 relative to TiNxOy which is a real number within a range of 0?n?0.05). This titanium oxynitride contains nitrogen atoms represented by N in an amount of not less than 17% by weight but less than 23% by weight, while having a specific surface area of 5-30 m2/g and a crystallite size determined by using an X-ray diffractometer of 17-25 nm.Type: ApplicationFiled: December 27, 2005Publication date: January 24, 2008Applicant: ISHIHARA SANGYO KAISHA, LTDInventors: Hideo Takahashi, Kaoru Isobe, Katsuichi Chiba, Yuichi Yasuda
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Patent number: 6833088Abstract: The organic solvent-based dispersion of conductive powders of the present invention comprises an organic solvent-based medium as a dispersion medium, conductive tin oxide powders coated with an organic metal coupling agent at the surface of tin oxide particles and a dispersant, and shows excellent dispersibility and high transparency. Therefore, the dispersion is useful for antistatic purpose of transparent substrates including the display surface of display devices, their surface protecting materials, films, etc.Type: GrantFiled: February 28, 2002Date of Patent: December 21, 2004Assignee: Ishihara Sangyo Kaisha, Ltd.Inventors: Kaoru Isobe, Masanori Tomonari, Tsutomu Kikuchi