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Hideki Takakuwa

Hideki Takakuwa, Shizuoka JP

Patent application numberDescriptionPublished
20110045412PIGMENT DISPERSION, COLORED CURABLE COMPOSITION, COLOR FILTER AND METHOD OF MANUFACTURING THE SAME - There are provide a pigment dispersion containing (A) a halogenated zinc phthalocyanine pigment, and (B) a copolymer of at least (b-1) a monomer having at least one group selected from an amino group and a nitrogen-containing heterocyclic group, (b-2) a monomer having a carboxyl group, and (b-3) a macromonomer having a weight-average molecular weight from 1,000 to 50,000, a colored curable composition containing the pigment dispersion, a color filter using the colored curable composition and a method for preparing the same.02-24-2011
20110143270AZO COMPOUND, AZO PIGMENT, PIGMENT DISPERSION, COLORING COMPOSITION, INK FOR INKJET RECORDING, COLORING COMPOSITION FOR COLOR FILTER, COLOR FILTER, AND PROCESS FOR PREPARING A COLORING COMPOSITION FOR COLOR FILTER - An azo pigment and a pigment dispersion showing excellent coloring characteristics such as tinctorial strength and hue and excellent fastness such as light fastness are provided.06-16-2011

Hideki Takakuwa, Haibara-Gun JP

Patent application numberDescriptionPublished
20080206660COLORED PHOTOSENSITIVE COMPOSITION, COLOR FILTER, AND METHOD FOR MAKING THE COLOR FILTER - The present invention provides a colored photosensitive composition containing a coloring agent, a resin, and a polymerizable compound, wherein the content of the coloring agent is 50% by mass to 80% by mass with reference to the total solid content, and the resin has an acid value of 1 mg KOH/g to 70 mg KOH/g.08-28-2008
20090053626COLORED PHOTOSENSITIVE COMPOSITION, COLOR FILTER, AND METHOD FOR MANUFACTURING COLOR FILTER - The invention provides a colored photosensitive composition including: a coloring agent with a content of from 50% by weight to 80% by weight with respect to the total solid content of the composition; an oxime-based initiator with a content of from 5% by weight to 20% by weight with respect to the total solid content of the composition; and a resin containing at least one first structural unit represented by any one of the following formulae (1) to (3) containing an unsaturated double bond, and at least one second structural unit represented by the following formula (4) containing an acid group, wherein a ratio of the first structural unit to the second structural unit is 1.5 or more (molar ratio).02-26-2009
20110020738METAL PHTHALOCYANINE DYE MIXTURE, CURABLE COMPOSITION, COLOR FILTER, AND METHOD FOR PRODUCING COLOR FILTER - The invention aims to provide a metal phthalocyanine dye mixture having excellent solubility in an organic solvent, which can be formed into a thin film. Provided are a metal phthalocyanine dye mixture contains at least phthalonitrile, a compound represented by the following formula (I), a compound represented by the following formula (II), and a metal or a metal compound, and a curable composition containing the metal phthalocyanine dye mixture, a color filter containing the curable composition, and a method for producing the color filter:01-27-2011

Patent applications by Hideki Takakuwa, Haibara-Gun JP

Hideki Takakuwa, Shizuoka-Ken JP

Patent application numberDescriptionPublished
20090075188AZO COMPOUND, CURABLE COMPOSITION, COLOR FILTER, AND METHOD OF PRODUCING THE SAME - This invention provides an azo compound represented by Formula (I), Formula (II), or Formula (III):03-19-2009
20090246649GREEN CURABLE COMPOSITION, COLOR FILTER AND METHOD OF PRODUCING SAME - The invention provides a green curable composition including a colorant in an amount of 47.5% by mass or more with respect to the total solid content of the green curable composition, the colorant containing a halogenated copper phthalocyanine pigment and a barbituric acid derivative yellow pigment at a ratio of from 6/4 to 3/7 (halogenated copper phthalocyanine pigment/barbituric acid derivative yellow pigment); a colored pattern formed from the green curable composition; a color filter including the colored pattern; a solid-state image sensor including the color filter; and a method of producing the color filter.10-01-2009
20100044817PHOTOSENSITIVE RESIN COMPOSITION, COLOR FILTER AND METHOD OF PRODUCING THE SAME, AND SOLID-STATE IMAGING DEVICE - A photosensitive resin composition is provided which provides a high resolution even when a pattern is formed using a low exposure intensity (in particular, less than 200 mJ/cm02-25-2010
20100055582COLORED CURABLE COMPOSITION, COLOR FILTER AND METHOD OF PRODUCING THE SAME, AND DIPYRROMETHENE METAL COMPLEX COMPOUND AND TAUTOMER THEREOF - A colored curable composition is provided which has good developability, has excellent color purity, can be formed into a thin film, and has a high absorption coefficient. The colored curable composition includes at least one of specific dipyrromethene metal complex compounds and tautomers thereof. Also, a colored curable composition suitable for forming a color filter which is used in a liquid crystal display device or a solid-state imaging device, and a color filter using the colored curable composition and a method of producing the same are provided.03-04-2010
20100230647COMPOUND OR ITS TAUTOMER, METAL COMPLEX COMPOUND, COLORED PHOTOSENSITIVE CURING COMPOSITION, COLOR FILTER, AND PRODUCTION - The invention provides a colored photosensitive curing composition useful for color filters in primary colors, including blue, green, and red, having a high molar absorption coefficient and allowing a reduction in film thickness and superior color purity and fastness; the colored photosensitive curing composition including, as its colorant, a dipyrromethene-based metal complex compound or a interconvertible isomer thereof, obtained from a metal or metal compound and a dipyrromethene-based compound represented by Formula (III):09-16-2010
20100239965COLORED CURABLE COMPOSITION, COLOR FILTER, AND METHOD FOR PRODUCING COLOR FILTER - A colored curable composition for a solid-state image pickup device, including a polyhalogenated zinc phthalocyanine pigment, a photopolymerization initiator, a polymerizable compound, and an epoxy compound.09-23-2010

Patent applications by Hideki Takakuwa, Shizuoka-Ken JP

Hideki Takakuwa, Tokyo JP

Patent application numberDescriptionPublished
20110135913Surface Treatment Solution For Autodeposition Coating of Metallic Material and Autodeposition Coating Treatment Method - A surface treatment solution for autodeposition coating treatment of a metallic material, which is an aqueous solution comprising at least one tannin, at least one crosslinking agent having a crosslinking group capable of thermosetting reaction with a phenolic hydroxyl group and/or a phenolic nucleus, ferric ions, soluble type elemental fluorine, and an oxidizing agent, wherein the solids mass concentration ratio of the tannin to the crosslinking agent is in the range of from 1:1 to 1:10, the molar concentration of the soluble type elemental fluorine is at least 3-fold the molar concentration of the ferric ions, and the pH of the solution is from 2 to 6. The surface treatment solution allows shorter process length as compared with conventional coating processes, generates less environmentally harmful by-products such as sludge, has excellent throwing power at the interior of a pocket structure, does not use environmentally harmful components such as chromium compounds, has corrosion resistance, and allows overcoating of a baking finish on the obtained coating film.06-09-2011