Patents by Inventor Yoshiki Akatani
Yoshiki Akatani 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: 9511614Abstract: A water-based inkjet ink for tampering prevention which readily allows detection of evidence of tampering by visual inspection using a variety of organic solvents on the written content of a printed article for financial securities or the like, a method for inkjet printing using the same, and a printed article. The water-based inkjet ink for tampering detection contains at least one type of disperse or oil-soluble dye which includes no cyano groups or azo groups, at least one type of dispersing agent, at least one type of water-soluble organic solvent and water.Type: GrantFiled: February 27, 2013Date of Patent: December 6, 2016Assignee: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Yuji Suzuki, Tadahiko Tabe, Yoshiki Akatani
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Patent number: 9040623Abstract: The present invention has an object to provide an ink for inkjet textile printing which has excellent fastnesses and causes less bleeding on a textile and to provide a low cost method for inkjet textile printing by using said ink; and relates to an ink for inkjet textile printing wherein the ink contains at least one kind disperse dye, a dispersing agent, water and at least one kind (referred to as A compound) of the compounds represented by the following formula (1): (wherein, n is an integer number of 1 to 12) and at least one kind compound (referred to as B? compound) selected from the group consisting of alkanediols having 3 to 5 carbon atoms and polypropylene glycols, as organic solvents, the total content of A compound and B? compound is 12 to 50% by weight based on the total amount of the ink, and the ratio by weight of A compound to B? compound is in the range of 5:1 to 0.7:1.Type: GrantFiled: April 1, 2013Date of Patent: May 26, 2015Assignee: Nippon Kayaku Kabushiki KaishaInventors: Yoshiki Akatani, Yuji Suzuki
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Patent number: 8979988Abstract: A dye ink set for ink jet recording, which has a wide color gamut, particularly for the hue range of magenta, blue, and cyan, and which has good ejection stability properties. The ink set includes ink compositions of two colors, a magenta ink composition and a cyan ink composition which contain a dye, water, and a water-soluble organic solvent, and the magenta ink composition contains a compound represented by formula (1) below or a salt thereof.Type: GrantFiled: August 31, 2011Date of Patent: March 17, 2015Assignee: Nippon Kayaku Kabushiki KaishaInventors: Shinsuke Shimizu, Tadahiko Tabe, Yoshiki Akatani
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Publication number: 20150017402Abstract: A water-based inkjet ink for tampering prevention which readily allows detection of evidence of tampering by visual inspection using a variety of organic solvents on the written content of a printed article for financial securities or the like, a method for inkjet printing using the same, and a printed article. The water-based inkjet ink for tampering detection contains at least one type of disperse or oil-soluble dye which includes no cyano groups or azo groups, at least one type of dispersing agent, at least one type of water-soluble organic solvent and water.Type: ApplicationFiled: February 27, 2013Publication date: January 15, 2015Applicant: Nippon Kayaku Kabushiki KashaInventors: Yuji Suzuki, Tadahiko Tabe, Yoshiki Akatani
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Patent number: 8657432Abstract: Disclosed is a reactive dye ink exhibiting excellent ejection stability when used in a printer having an inkjet head for commercial use which requires a high-viscosity ink. The reactive dye ink has excellent storage stability and excellent fixability to textiles. Specifically disclosed is an ink composition containing at least one reactive dye serving as a coloring matter, which also contains water and a compound represented by formula (1) and having an average molecular weight of 340-2,200. (1) [In the formula, X1, X2, X3 and X4 independently represent a hydrogen atom or a methyl group; and the sum of j, k, m and n is a number not less than 4 but not more than 40.Type: GrantFiled: February 16, 2009Date of Patent: February 25, 2014Assignee: Nippon Kayaku Kabushiki KaishaInventors: Shinsuke Shimizu, Mariko Umeda, Yoshiki Akatani
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Publication number: 20130249994Abstract: A dye ink set for ink jet recording, which has a wide color gamut, particularly for the hue range of magenta, blue, and cyan, and which has good ejection stability properties. The ink set includes ink compositions of two colors, a magenta ink composition and a cyan ink composition which contain a dye, water, and a water-soluble organic solvent, and the magenta ink composition contains a compound represented by formula (1) below or a salt thereof.Type: ApplicationFiled: August 31, 2011Publication date: September 26, 2013Applicant: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Shinsuke Shimizu, Tadahiko Tabe, Yoshiki Akatani
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Patent number: 8212974Abstract: Disclosed is a dye-containing blue color composition for color filter, including a triarylmethane-based dye having a structure represented by the following formula (1): wherein R1, R2, R3, R4, R5 and R6 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms which may have a substituent, a phenyl group which may have a substituent or a benzyl group which may have a substituent, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19 and R20 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms which may have a substituent or a halogen atom and X represents a tristrifluoromethanesulfonylmethide anion.Type: GrantFiled: April 22, 2010Date of Patent: July 3, 2012Assignees: Toppan Printing Co., Ltd., Nippon Kayaku Kabushiki KaishaInventors: Satoshi Ohkuma, Noriko Asahi, Takashi Yamauchi, Yasuyuki Demachi, Takaaki Kurata, Yutaka Ishii, Yoshiki Akatani
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Publication number: 20110007110Abstract: Disclosed is a reactive dye ink exhibiting excellent ejection stability when used in a printer having an inkjet head for commercial use which requires a high-viscosity ink. The reactive dye ink has excellent storage stability and excellent fixability to textiles. Specifically disclosed is an ink composition containing at least one reactive dye serving as a coloring matter, which also contains water and a compound represented by formula (1) and having an average molecular weight of 340-2,200. (1) [In the formula, X1, X2, X3 and X4 independently represent a hydrogen atom or a methyl group; and the sum of j, k, m and n is a number not less than 4 but not more than 40.Type: ApplicationFiled: February 16, 2009Publication date: January 13, 2011Applicant: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Shinsuke Shimizu, Mariko Umeda, Yoshiki Akatani
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Publication number: 20100271578Abstract: Disclosed is a dye-containing blue color composition for color filter, including a triarylmethane-based dye having a structure represented by the following formula (1): wherein R1, R2, R3, R4, R5 and R6 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms which may have a substituent, a phenyl group which may have a substituent or a benzyl group which may have a substituent, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19 and R20 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms which may have a substituent or a halogen atom and X represents a tristrifluoromethanesulfonylmethide anion.Type: ApplicationFiled: April 22, 2010Publication date: October 28, 2010Applicants: TOPPAN PRINTING CO., LTD., NIPPON KAYAKU KABUSHIKI KAISHAInventors: Satoshi Ohkuma, Noriko Asahi, Takashi Yamauchi, Yasuyuki Demachi, Takaaki Kurata, Yutaka Ishii, Yoshiki Akatani
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Publication number: 20090113641Abstract: The present invention has an object to provide an ink for inkjet textile printing which has excellent fastnesses and causes less bleeding on a textile and to provide a low cost method for inkjet textile printing by using said ink; and relates to an ink for inkjet textile printing wherein the ink contains at least one kind disperse dye, a dispersing agent, water and at least one kind (referred to as A compound) of the compounds represented by the following formula (1): (wherein, n is an integer number of 1 to 12) and at least one kind compound (referred to as B? compound) selected from the group consisting of alkanediols having 3 to 5 carbon atoms and polypropylene glycols, as organic solvents, the total content of A compound and B? compound is 12 to 50% by weight based on the total amount of the ink, and the ratio by weight of A compound to B? compound is in the range of 5:1 to 0.7:1.Type: ApplicationFiled: March 5, 2007Publication date: May 7, 2009Inventors: Yoshiki Akatani, Yuji Suzuki
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Patent number: 7507283Abstract: The present invention relates to an aqueous dispersion of a water-insoluble coloring material having superior shelf life stability which is suitable to an ink for ink-jetting, an ink composition superior in shelf life stability and discharge property, a method for inkjet recording using said ink composition, and recorded article obtained thereby. Said aqueous dispersion is characterized by comprising a water-insoluble coloring material, water, an anionic dispersing agent, and an alkylene oxide adduct of phytosterols and/or an alkylene oxide adduct of cholestanols, and said ink composition is characterized by further comprising an organic solvent in addition to the above components.Type: GrantFiled: June 7, 2005Date of Patent: March 24, 2009Assignee: Nippon Kayaku Kabushiki KaishaInventors: Yoshiki Akatani, Katsunori Fujii, Yuji Suzuki, Mariko Umeda, Tadahiko Tabe, Yoshiyuki Dejima
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Publication number: 20080070009Abstract: The present invention relates to an aqueous dispersion of a water-insoluble coloring material having superior shelf life stability which is suitable to an ink for ink-jetting, an ink composition superior in shelf life stability and discharge property, a method for inkjet recording using said ink composition, and recorded article obtained thereby. Said aqueous dispersion is characterized by comprising a water-insoluble coloring material, water, an anionic dispersing agent, and an alkylene oxide adduct of phytosterols and/or an alkylene oxide adduct of cholestanols, and said ink composition is characterized by further comprising an organic solvent in addition to the above components.Type: ApplicationFiled: June 7, 2005Publication date: March 20, 2008Applicant: NIPPON KAYAKU KUBUSHIKI KAISHAInventors: Yoshiki Akatani, Katsunori Fujii, Yuji Suzuki, Mariko Umeda, Tadahiko Tabe, Yoshiyuki Dejima
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Patent number: 6530985Abstract: The present invention relates to a water-based magenta ink composition which has satisfactory storage stability, has a hue and vividness suitable for ink-jet recording, and gives prints having high fastness to light and water, and a magenta dye suitable therefor. More particularly, the present invention relates to a water-based magenta ink composition characterized by containing a disulfonic acid derivative of a compound represented by Formula (2) or the salt thereof as the dye component, an ink-jet recording method using said composition, and magenta dye containing little inorganic salt and little mono-sulfonic acid compound and being suitable for the said composition.Type: GrantFiled: August 31, 2000Date of Patent: March 11, 2003Assignee: Nippon Kayaku Kabushiki KaishaInventors: Hiroyuki Matsumoto, Yasuo Shirasaki, Katsunori Fujii, Yoshiki Akatani
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Patent number: 5942603Abstract: This invention related to a novel .beta.-crystal of the compound represented by the following formula (1), ##STR1## which is useful as a dyestuff. The .beta.-crystal of this invention is characterized by being stable in high temperature and having sharp peaks in the powder X-ray diffractometory.This invention is related to a process for producing a said .beta.-crystal, said process comprising heating a known thermally unstable .alpha.-crystal at a temperature higher than 15.degree. C., preferably higher than 40.degree. C. in water, a water-soluble organic solvent, or a solvent comprising water containing an anionic or nonionic surface active agent.Furthermore, this invention is related to a dyestuff composition containing of the said .beta.-crystal, and a process for dyeing comprising employing the said .beta.-crystal.Type: GrantFiled: December 11, 1997Date of Patent: August 24, 1999Assignee: Nippon Kayaku Co., Ltd.Inventors: Yasuo Murakami, Yoshiki Akatani
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Patent number: 5868802Abstract: Disclosed is a disperse dye composition comprising dyes of Formulae (I) and (II). ##STR1## Z.sub.1 is a halogen atom; R.sub.1 is a C.sub.1-4 alkyl group or a hydrogen atom; X.sub.1 and Y.sub.1 each are independently a chlorine atom or a bromine atom; R.sub.2 is a C.sub.1-4 alkyl group or a phenyl group. Using the composition, composite hydrophobic fiber materials can be dyed evenly, and the dyed materials have excellent color fastness.Type: GrantFiled: April 17, 1997Date of Patent: February 9, 1999Assignee: Nippon Kayaku Co., Ltd.Inventors: Yoshiki Akatani, Yasuo Shirasaki, Yasuo Murakami
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Patent number: 5688288Abstract: A disperse dye composition comprising one or more dyes represented by the formula: ##STR1## wherein X represents a chlorine or bromine atom; Y a hydrogen atom or an alkoxy or alkoxyalkoxy group; and each of R.sub.1 and R.sub.2 independently a hydrogen atom, a linear or branched unsubstituted or substituted alkyl group, an allyl group or a cycloalkyl group, provided that each of the alkyl and alkoxy groups has 1 to 4 carbon atoms, anda dye represented by the formula: ##STR2## wherein Y represents an alkoxy or alkoxyalkoxy group; each of R.sub.1 and R.sub.2 independently a hydrogen atom, a linear or branched unsubstituted or substituted alkyl group, an allyl group or a cycloalkyl group, and R.sub.3 an alkyl group, provided that each of the alkyl and alkoxy groups has 1 to 4 carbon atoms.Type: GrantFiled: December 17, 1996Date of Patent: November 18, 1997Assignee: Nippon Kayaku Kabushiki KaishaInventors: Yoshiki Akatani, Yasuo Murakami, Hiroyuki Matsumoto, Kiyoko Tanaka