Patents by Inventor Yasufumi Ueda
Yasufumi 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: 20200156396Abstract: The present invention relates to a pigment water dispersion containing a pigment, a crosslinked polymer and water, in which the crosslinked polymer is prepared by crosslinking a carboxy group-containing polymer with a crosslinking agent, and has an acid value of not less than 70 mgKOH/g and not more than 300 mgKOH/g; and the pigment water dispersion further contains a formaldehyde-releasing compound. The pigment water dispersion of the present invention is excellent in storage stability even when being stored under high-temperature conditions for a long period of time.Type: ApplicationFiled: July 27, 2018Publication date: May 21, 2020Applicant: KAO CORPORATIONInventors: Takayuki SUZUKI, Takako YAMAMOTO, Erika MAEKAWA, Yasufumi UEDA
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Patent number: 10654933Abstract: The present inventors discovered that additional aggregation of low-pI antibody can be suppressed by removing formed antibody aggregates after a certain period of time following Protein A column purification, acidic treatment, and neutralization. Furthermore, the present inventors found that efficient impurities removal for a low-pI antibody can be accomplished by using an anion exchange resin in the Bind/Elute mode and then a hydrophobic interaction chromatography or multimodal chromatography resin, compared with conventional methods.Type: GrantFiled: December 26, 2014Date of Patent: May 19, 2020Assignee: Chugai Seiyaku Kabushiki KaishaInventors: Yasufumi Ueda, Shohei Kobayashi, Satoko Yanagita, Takuo Kawase, Masahiro Fukunaga
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Patent number: 10618308Abstract: The present invention relates to an ink-jet printing method that is capable of obtaining good printed materials that are free of occurrence of color migration and deformation of a printing medium even when printed on a transparent resin printing medium using a water-based ink containing a white ink, and a black or chromatic ink.Type: GrantFiled: February 2, 2017Date of Patent: April 14, 2020Assignees: KAO CORPORATION, THINK LABORATORY CO., LTD.Inventors: Yuta Matsumoto, Kazuki Watanabe, Yasufumi Ueda, Tatsuo Shigeta
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Patent number: 10603928Abstract: The present invention relates to an ink-jet printing method that is capable of obtaining good printed materials that are free of occurrence of color migration and deformation of a printing medium even when printed on a resin printing medium. The present invention provides an ink-jet printing method using a water-based ink containing a black ink, a chromatic ink and a white ink which each contain a pigment (A), an organic solvent (C) having a boiling point of not lower than 90° C. and lower than 250° C.Type: GrantFiled: February 2, 2017Date of Patent: March 31, 2020Assignees: KAO CORPORATION, THINK LABORATORY CO., LTD.Inventors: Yuta Matsumoto, Ryuma Mizushima, Takahiro Sato, Kazuki Watanabe, Yasufumi Ueda, Tatsuo Shigeta
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Patent number: 10549565Abstract: An inkjet recording medium having an ink receiving layer containing an inorganic pigment, starch, and copolymer latex on at least one surface of a base, characterized in that the inorganic pigment contains engineered calcium carbonate and kaolin, an amount of the engineered calcium carbonate is from 50% by weight or more to less than 80% by weight and an amount of the kaolin is from 10% by weight or more to less than 50% by weight with respect to a total amount of the inorganic pigment, and from 1 parts by weight or more to 10 parts by weight or less of an organic pigment having a glass transition temperature (Tg) of 20° C. or more is contained in the ink receiving layer with respect to 100 parts by weight of the inorganic pigment.Type: GrantFiled: September 28, 2016Date of Patent: February 4, 2020Assignees: Nippon Paper Industries Co., Ltd., Kao CorporationInventors: Koji Kutsuwa, Yasufumi Ueda, Takayuki Suzuki
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Patent number: 10543684Abstract: The present invention relates to an ink-jet printing apparatus that is capable of obtaining printed materials that are free of occurrence of color migration and have good appearance even when printed on a resin printing medium using a water-based ink, and an ink-jet printing method. The present invention provides an ink-jet printing apparatus including an ink-jet printing head that ejects a water-based ink onto a resin printing medium that is transported in a feeding direction thereof, and an under heater that heats the printing medium from a rear side surface of the printing medium opposed to a front side surface thereof which faces to the ink-jet printing head, in which the under heater is disposed at a position spaced at a distance of from 0.05 to 3.0 mm apart from the rear side surface of the printing medium upon printing, and an ink-jet printing method using the ink-jet printing apparatus.Type: GrantFiled: February 2, 2017Date of Patent: January 28, 2020Assignees: KAO CORPORATION, THINK LABORATORY CO., LTD.Inventors: Yuta Matsumoto, Kazuki Watanabe, Yasufumi Ueda, Tatsuo Shigeta
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Publication number: 20200024456Abstract: The present invention relates to [1] a process for producing a fine organic pigment, including step 1 of kneading a mixture prepared by compounding a raw material organic pigment, a water-soluble inorganic salt and a water-soluble organic solvent; and step 2 of subjecting the kneaded mixture obtained in the step 1 to cleaning treatment with an aqueous solvent and then to filtration treatment, in which before or after kneading the mixture in the step 1 and before subjecting the kneaded mixture to filtration treatment in the step 2, a sulfonic acid salt dispersant is compounded in an amount of not less than 0.8 part by mass and not more than 8.Type: ApplicationFiled: July 26, 2017Publication date: January 23, 2020Applicant: KAO CORPORATIONInventors: Hironobu FUKUROI, Yasufumi UEDA, Yusuke SHIMIZU, Isao TSURU
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Publication number: 20190375225Abstract: The present invention relates to [1] a process for producing a printed material, including step 1 of subjecting an image-bearing surface of a printed recording medium 1? on which characters or images are formed by analog printing to discharge treatment under specific conditions to obtain a printed recording medium 1, and step 2 of further forming characters or images on the image-bearing surface of the printed recording medium 1 by ink-jet printing using a water-based ink to obtain the printed material, [2] an ink-jet printing method including the step of ejecting a water-based ink onto a printed recording medium 1 by an ink-jetting method to form characters or images thereon, in which the printed recording medium 1 has an image-bearing surface on which characters or images are formed by analog printing, and the image-bearing surface is subjected to discharge treatment under the specific conditions, [3] a recording medium for ink-jet printing, including an image-bearing surface on which characters or images aType: ApplicationFiled: February 15, 2018Publication date: December 12, 2019Applicant: KAO CORPORATIONInventors: Ryuma MIZUSHIMA, Yuta MATSUMOTO, Yasufumi UEDA
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Publication number: 20190352434Abstract: The present invention relates to a process for producing a dispersion of white fine particles from which a white ink that is capable of exhibiting excellent hiding power, rub fastness and water resistance even when printed on a low-water absorbing printing medium can be obtained by incorporating the dispersion of the white fine particles into the ink, and a water-based ink for ink-jet printing which contains the white fine particles.Type: ApplicationFiled: December 22, 2017Publication date: November 21, 2019Applicant: KAO CORPORATIONInventors: Tomohide YOSHIDA, Yasufumi UEDA
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Patent number: 10471739Abstract: The present invention relates to an ink-jet printing apparatus that is capable of obtaining printed materials having good appearance while maintaining high quality of printed characters or images even when printed on a resin printing medium using a water-based ink, and an ink-jet printing method.Type: GrantFiled: February 2, 2017Date of Patent: November 12, 2019Assignees: KAO CORPORATION, THINK LABORATORY CO., LTD.Inventors: Yuta Matsumoto, Yasufumi Ueda, Tatsuo Shigeta
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Publication number: 20190315984Abstract: The present invention relates to white fine particles from which a white ink that is capable of satisfying both of high hiding power and good bending resistance in a printed material can be obtained, and further relates to white fine particles from which an ink that is capable of satisfying not only excellent fixing properties even when printed on a non-liquid absorbing printing medium such as a resin film, but also suppression of increase in viscosity of the ink and at the same time good deinking properties at a high level can be obtained.Type: ApplicationFiled: November 30, 2017Publication date: October 17, 2019Applicant: KAO CORPORATIONInventors: Tomohide YOSHIDA, Yasufumi UEDA
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Patent number: 10421862Abstract: The present invention relates to [1] a process for producing pigment-containing modified polymer particles, including the step of reacting pigment-containing polymer particles (A) containing a functional group and a compound (B) containing a reactive group capable of reacting with the functional group of the polymer particles (A) in a medium under such a condition that a ratio [(B)/(A)] of total moles of the reactive group of the compound (B) to total moles of the functional group of the polymer particles (A) is from 0.10 to 0.62; [2] a pigment water dispersion including an aqueous medium and the modified polymer particles produced by the aforementioned process which are dispersed in the aqueous medium; and [3] an ink including the aforementioned pigment water dispersion and an organic solvent.Type: GrantFiled: December 22, 2015Date of Patent: September 24, 2019Assignee: KAO CORPORATIONInventors: Takahiro Sato, Yasufumi Ueda
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Publication number: 20190264043Abstract: The present invention relates to an aqueous gravure ink containing a pigment, a polymer, a water-soluble organic solvent, a surfactant and water, in which the water-soluble organic solvent contains a glycol ether having a boiling point of from 100 to 260° C., and a content of the glycol ether in the ink is from 1 to 10% by mass; a total content of the water-soluble organic solvent in the ink is not more than 15% by mass; the surfactant contains an acetylene glycol-based surfactant; and a content of water in the ink is from 50 to 70% by mass.Type: ApplicationFiled: November 13, 2017Publication date: August 29, 2019Applicant: KAO CORPORATIONInventors: Kazuki WATANABE, Ryuma MIZUSHIMA, Takahiro SATO, Yasufumi UEDA
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Publication number: 20190047299Abstract: The present invention relates to an ink-jet printing method that is capable of obtaining good printed materials that are free of occurrence of color migration and deformation of a printing medium even when printed on a resin printing medium. The present invention provides an ink-jet printing method using a water-based ink containing a black ink, a chromatic ink and a white ink which each contain a pigment (A), an organic solvent (C) having a boiling point of not lower than 90° C. and lower than 250° C.Type: ApplicationFiled: February 2, 2017Publication date: February 14, 2019Applicants: KAO CORPORATION, THINK LABORATORY CO., LTD.Inventors: Yuta MATSUMOTO, Ryuma MIZUSHIMA, Takahiro SATO, Kazuki WATANABE, Yasufumi UEDA, Tatsuo SHIGETA
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Publication number: 20190047308Abstract: An inkjet recording medium having an ink receiving layer containing an inorganic pigment, starch, and copolymer latex on at least one surface of a base, characterized in that the inorganic pigment contains engineered calcium carbonate and kaolin, an amount of the engineered calcium carbonate is from 50% by weight or more to less than 80% by weight and an amount of the kaolin is from 10% by weight or more to less than 50% by weight with respect to a total amount of the inorganic pigment, and from 1 parts by weight or more to 10 parts by weight or less of an organic pigment having a glass transition temperature (Tg) of 20° C. or more is contained in the ink receiving layer with respect to 100 parts by weight of the inorganic pigment.Type: ApplicationFiled: September 28, 2016Publication date: February 14, 2019Inventors: Koji Kutsuwa, Yasufumi Ueda, Takayuki Suzuki
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Publication number: 20190039373Abstract: The present invention relates to an ink-jet printing apparatus that is capable of obtaining printed materials that are free of occurrence of color migration and have good appearance even when printed on a resin printing medium using a water-based ink, and an ink-jet printing method. The present invention provides an ink-jet printing apparatus including an ink-jet printing head that ejects a water-based ink onto a resin printing medium that is transported in a feeding direction thereof, and an under heater that heats the printing medium from a rear side surface of the printing medium opposed to a front side surface thereof which faces to the ink-jet printing head, in which the under heater is disposed at a position spaced at a distance of from 0.05 to 3.0 mm apart from the rear side surface of the printing medium upon printing, and an ink-jet printing method using the ink-jet printing apparatus.Type: ApplicationFiled: February 2, 2017Publication date: February 7, 2019Applicants: KAO CORPORATION, THINK LABORATORY CO., LTD.Inventors: Yuta MATSUMOTO, Kazuki WATANABE, Yasufumi UEDA, Tatsuo SHIGETA
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Publication number: 20190039384Abstract: The present invention relates to an ink-jet printing method that is capable of obtaining good printed materials that are free of occurrence of color migration and deformation of a printing medium even when printed on a transparent resin printing medium using a water-based ink containing a white ink, and a black or chromatic ink.Type: ApplicationFiled: February 2, 2017Publication date: February 7, 2019Applicants: KAO CORPORATION, THINK LABORATORY CO., LTD.Inventors: Yuta MATSUMOTO, Kazuki WATANABE, Yasufumi UEDA, Tatsuo SHIGETA
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Publication number: 20190030918Abstract: The present invention relates to an ink-jet printing apparatus that is capable of obtaining printed materials having good appearance while maintaining high quality of printed characters or images even when printed on a resin printing medium using a water-based ink, and an ink-jet printing method.Type: ApplicationFiled: February 2, 2017Publication date: January 31, 2019Applicants: KAO CORPORATION, THINK LABORATORY CO., LTD.Inventors: Yuta MATSUMOTO, Yasufumi UEDA, Tatsuo SHIGETA
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Patent number: 10179470Abstract: An inkjet recording method for printing an inkjet recording medium comprising an ink-receiving layer containing inorganic pigment, starch and copolymer latex on a surface of a base with inkjet ink as aqueous pigment ink, a content of the inorganic pigment being 10 g/m2 or more to 35 g/m2 or less in the ink-receiving layer, and a content of calcium carbonate being from 80% by weight or more to 100% by weight or less, the inkjet ink containing one or more selected from self dispersed pigment and pigment containing water-insoluble polymer particles, from 10% by weight or more to 48% by weight or less of a water-soluble organic solvent A having a boiling point of 230° C. or less, from 0% by weight or more to 5.0% by weight or less of a water-soluble organic solvent B having a boiling point of 280° C. or more, from 42% by weight or more to 70% by weight or less of water.Type: GrantFiled: June 24, 2015Date of Patent: January 15, 2019Assignees: Nippon Paper Industries Co., Ltd., Kao CorporationInventors: Koji Kutsuwa, Masaaki Nakano, Yasufumi Ueda, Teruyuki Fukuda, Kaname Mitsuyoshi, Takayuki Suzuki
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Publication number: 20180244093Abstract: Provided is a gravure printing method by which high printing density and excellent highlight suitability are obtained, even if a gravure plate having high resolution and reduced thickness is used. The gravure printing method comprises: using an aqueous ink having a Zahn cup #3 viscosity at 20° C. of 11.0 seconds or more and 20.0 seconds or less, and having an evaporation rate of 30 mass % or less in a drying test, the drying test involving drying 1 g of the ink at a temperature of 40° C. and an air flow of 1,400 L/min for 30 minutes; and transferring 1 ml/m2 or more and 7 ml/m2 or less of the ink onto a printing medium.Type: ApplicationFiled: August 3, 2016Publication date: August 30, 2018Inventors: Tatsuo SHIGETA, Ryuma MIZUSHIMA, Yuta MATSUMOTO, Yasufumi UEDA