Patents by Inventor Yasuo Kuroda
Yasuo Kuroda 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: 8657433Abstract: Provided is a porphyrazine dye suitable for use in ink-jet recording, the porphyrazine dye giving a cyan ink with a satisfactory hue, having various excellent fastness properties, in particular, ozone resistance, and attaining a high color density. Also provided is an ink composition containing the dye. The porphyrazine dye is a porphyrazine dye represented by formula (1) or a salt thereof. In formula (1), rings A to D each independently represents a benzene ring, a nitrogenous heteroaromatic ring, etc.; E represents an alkylene; X represents sulfoanilino, etc.; R represents a hydrogen atom, sulfo, carboxy, etc.; group F represents phenyl, a nitrogenous heteroaromatic ring, etc.; a is an integer of 1-6; b is 0.00-3.90, excluding 3.90, on average; c is 0.10-4.00, excluding 4.00, on average; and the sum of b and c is 1.00-4.00, excluding 4.00, on average.Type: GrantFiled: June 8, 2010Date of Patent: February 25, 2014Assignee: Nippon Kayaku Kabushiki KaishaInventors: Kenji Ooshima, Takashi Yoneda, Yasuo Kuroda, Akira Kawaguchi
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Patent number: 8394186Abstract: The present invention relates to a porphyrazine coloring matter represented by the following formula (1) or a salt thereof (wherein, the rings A to D are each independently a benzene ring or a 6-membered ring nitrogen-containing heteroaromatic ring, the number of said heteroaromatic rings is more than 0 and less than 1, E is alkylene, X is an anilino group or the like having at least one sulfo group or the like as a substituent, Y is a substituted monoalkylamino group or the like, b is 0 to 3, c is 0.1 to 3, and the sum of b and c is more than 3 and less than 4). By the present invention, a copper porphyrazine coloring matter suitable for inkjet recording which has a good hue as an cyan ink, is excellent in light fastness, ozone fastness and moisture fastness and does not cause bronze phenomenon can be provided.Type: GrantFiled: June 26, 2009Date of Patent: March 12, 2013Assignee: Nippon Kayaku Kabushiki KaishaInventors: Takashi Yoneda, Yasuo Kuroda, Akira Kawaguchi
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Publication number: 20120081457Abstract: Provided is a porphyrazine dye suitable for use in ink-jet recording, the porphyrazine dye giving a cyan ink with a satisfactory hue, having various excellent fastness properties, in particular, ozone resistance, and attaining a high color density. Also provided is an ink composition containing the dye. The porphyrazine dye is a porphyrazine dye represented by formula (1) or a salt thereof. In formula (1), rings A to D each independently represents a benzene ring, a nitrogenous heteroaromatic ring, etc.; E represents an alkylene; X represents sulfoanilino, etc.; R represents a hydrogen atom, sulfo, carboxy, etc.; group F represents phenyl, a nitrogenous heteroaromatic ring, etc.; a is an integer of 1-6; b is 0.00-3.90, excluding 3.90, on average; c is 0.10-4.00, excluding 4.00, on average; and the sum of b and c is 1.00-4.00, excluding 4.00, on average.Type: ApplicationFiled: June 8, 2010Publication date: April 5, 2012Applicant: Nippon Kayaku Kabushiki KaishaInventors: Kenji Ooshima, Takashi Yoneda, Yasuo Kuroda, Akira Kawaguchi
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Publication number: 20110090278Abstract: The present invention relates to a porphyrazine coloring matter represented by the following formula (1) or a salt thereof (wherein, the rings A to D are each independently a benzene ring or a 6-membered ring nitrogen-containing heteroaromatic ring, the number of said heteroaromatic rings is more than 0 and less than 1, E is alkylene, X is an anilino group or the like having at least one sulfo group or the like as a substituent, Y is a substituted monoalkylamino group or the like, b is 0 to 3, c is 0.1 to 3, and the sum of b and c is more than 3 and less than 4). By the present invention, a copper porphyrazine coloring matter suitable for inkjet recording which has a good hue as an cyan ink, is excellent in light fastness, ozone fastness and moisture fastness and does not cause bronze phenomenon can be provided.Type: ApplicationFiled: June 26, 2009Publication date: April 21, 2011Applicant: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Takashi Yoneda, Yasuo Kuroda, Akira Kawaguchi
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Patent number: 7854797Abstract: The present invention relates to a porphyrazine coloring matter represented by the following formula (1) or a salt thereof; wherein, each of the rings A to D independently represents a benzene ring or a 6-membered nitrogen-containing heteroaromatic ring, at least one or more thereof is a benzene ring, at least one of the rest is a nitrogen-containing heteroaromatic ring, E represents alkylene, X is an anilino group having a substituent and the like, Y represents an amino group; a hydroxy group; a mono- or di-alkylamino group or a nitrogen-containing heterocyclic group which may have a substituent, excepting for the combination in which Y is an amino group or a hydroxy group and X is a substituted anilino group, b is 0 to 2.9, c is 0.1 to 3, and the sum of b and c is 1 to 3.Type: GrantFiled: March 13, 2008Date of Patent: December 21, 2010Assignee: Nippon Kayaku Kabushiki KaishaInventors: Takafumi Fujii, Takashi Yoneda, Yasuo Kuroda, Yoshiaki Kawaida
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Publication number: 20100112218Abstract: The present invention relates to a porphyrazine coloring matter represented by the following formula (1) or a salt thereof; (wherein, each of the rings A to D independently represents a benzene ring or a 6-membered nitrogen-containing heteroaromatic ring, at least one or more thereof is a benzene ring, at least one of the rest is a nitrogen-containing heteroaromatic ring, E represents alkylene, X is an anilino group having a substituent and the like, Y represents an amino group; a hydroxy group; a mono- or di-alkylamino group or a nitrogen-containing heterocyclic group which may have a substituent, excepting for the combination in which Y is an amino group or a hydroxy group and X is a substituted anilino group, b is 0 to 2.9, c is 0.1 to 3, and the sum of b and c is 1 to 3).Type: ApplicationFiled: March 13, 2008Publication date: May 6, 2010Applicant: Nippon Kayaku Kabushiki KaishaInventors: Takafumi Fujii, Takashi Yoneda, Yasuo Kuroda, Yoshiaki Kawaida
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Patent number: 6372866Abstract: A process for producing a cationic emulsion stable to alkalis having an average particle diameter of 0.01 to 0.1 micron, in which, using as an emulsifier, a water-soluble polymer A2 obtained by subjecting a polymer A1 obtained by copolymerizing an amino group-containing compound with a compound copolymerizable therewith in the presence of a polymerization initiator, to neutralization with an organic or inorganic acid, a specific epoxy group-containing acrylate compound (c) and a compound copolymerizable therewith are subjected in combination to emulsion polymerization in the presence of a redox catalyst system in water as a medium to obtain an emulsion D; the emulsion D is then reacted with epichlorohydrin. The cationic emulsion is coated on paper, a film, or a strongly alkaline substrate to impart water resistance.Type: GrantFiled: April 14, 1999Date of Patent: April 16, 2002Assignee: Taisei Chemical Industries, Ltd.Inventors: Mitsuo Tamazawa, Nobuyuki Urushibara, Yasuo Kuroda
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Publication number: 20020007008Abstract: A process for producing a cationic emulsion stable to alkalis having an average particle diameter of 0.01 to 0.1 micron, in which using, as an emulsifier, a water-soluble polymer A2 obtained by subjecting a polymer A1 having a weight average molecular weight of 5,000 to 100,000 obtained by copolymerizing an amino group-containing compound with a compound copolymerizable therewith in the presence of a polymerization initiator, to neutralization with an organic or inorganic acid in a proportion of 0.5 to 1.Type: ApplicationFiled: April 14, 1999Publication date: January 17, 2002Inventors: MITSUO TAMAZAWA, NOBUYUKI URUSHIBARA, YASUO KURODA
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Patent number: 6174963Abstract: Provided is a method for producing an amphoteric resin which comprises reacting (1) a copolymerizable basic prepolymer A2 which is obtained by reacting a prepolymer A1 being obtained by polymerization of an amino group-containing &agr;, &bgr;-ethylenically polymerizable compound, other &agr;, &bgr;-ethylenically polymerizable compound and a polymerization initiator containing a carboxyl group at an end, with a compound having an epoxy group represented by the following formula (I): (wherein R1 represents H or a methyl group, and R represents a straight or branched chain alkyl group of 1-10 carbon atoms) in an amount of 0.1-1.0 equivalent for the amino group equivalent of the prepolymer A1 and (2) an &agr;, &bgr;-ethylenically polymerizable acidic prepolymer B2 which is obtained by carrying out the reaction in the same manner as above with (3) other &agr;, &bgr;-ethylenically polymerizable compound C.Type: GrantFiled: July 14, 1999Date of Patent: January 16, 2001Assignee: Taisei Chemical Industries, Ltd.Inventors: Mitsuo Tamazawa, Yasuo Kuroda
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Patent number: 5732363Abstract: There are provided a solidifying material used for radioactive waste which comprises a latent hydraulic material, an ultra-fine powder substance and a dispersing agent, and a process for the solidification of radioactive wastes which comprises kneading the above solidifying material with a cure stimulating agent, radioactive waste and, as occasion demands, water, and then curing the mixture by aging. Since the solidifying material of the present invention has excellent properties such as large treating capacity, excellent water resistance and large compressive strength, not only temporary storage but also permanent storage of radioactive wastes can be made.Type: GrantFiled: October 24, 1995Date of Patent: March 24, 1998Assignees: JGC Corporation, Nippon Kayaku Kabushiki KaishaInventors: Kazunori Suzuki, Shigeru Mihara, Takuro Yagi, Yoshimitsu Karasawa, Koichi Ikeda, Yasuo Kuroda
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Patent number: 5128493Abstract: A diamine platinum (II) complex represented by the general formula ##STR1## [wherein R.sub.1 and R.sub.2 are each a lower alkyl group; and two X's are each a halogen atom or jointly form a group represented by ##STR2## (wherein R.sub.3 and R.sub.4 are each a hydrogen atom or a lower alkyl group) or a group represented by ##STR3## (wherein m is 1 or 2)].Type: GrantFiled: October 31, 1990Date of Patent: July 7, 1992Assignee: Nippon Kayaku Kabushiki KaishaInventors: Hiroyoshi Nowatari, Hiroshi Hayami, Yasuo Kuroda, Sumio Yoda, Katsutoshi Takahashi
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Patent number: 5068376Abstract: A diamine platinum (II) complex represented by the general formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each a hydrogen atom or a lower alkyl group; and two X's are each a halogen atom or jointly form a group represented by ##STR2## wherein R.sub.5 and R.sub.6 are each a hydrogen atom or a lower alkyl group of a group represented by ##STR3## wherein m is 1 or 2.Type: GrantFiled: January 10, 1990Date of Patent: November 26, 1991Assignee: Nippon Kayaku Kabushiki KaishaInventors: Hiroyoshi Nowatari, Hiroshi Hayami, Yasuo Kuroda, Sumio Yoda, Katsutoshi Takahashi
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Patent number: 5063462Abstract: An LED array has a plurality of LED blocks each of which can independently be illuminated or extinguished. The LED array includes an illumination control unit for illuminating, after the lapse of a time period T1 after a block is illuminated, a succeeding block; an extinguishment control unit for extinguishing, after the lapse of a time period T2 after a block is illuminated, another block which has been illuminated since before the former block was illuminated; and a time control unit for determining the time period T2. The time control unit is adapted to automatically control the time period T2 in accordance with the outputs from a line sensor which reads out an original image illuminated by the LED array.Type: GrantFiled: December 5, 1989Date of Patent: November 5, 1991Assignee: Canon Kabushiki KaishaInventors: Katsumi Nakagawa, Tatsundo Kawai, Yasuo Kuroda
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Patent number: 5043719Abstract: A matrix circuit has a plurality of blocks each including a plurality of semiconductor unit elements, the semiconductor unit elements of each block being adapted to be impressed with a predetermined voltage at the same time, each unit element becoming active when impressed with the predetermined voltage, and a drive device for impressing the predetermined voltage to the plurality of blocks sequentially. The matrix circuit includes a first selective device for selecting either ground or a desired other than ground voltage, and a second selective device for selecting one of the output of the drive device and the output of the first selective device whereby the output of the second selective device renders active the plurality of unit elements of each block.Type: GrantFiled: December 21, 1990Date of Patent: August 27, 1991Assignee: Canon Kabushiki KaishaInventors: Katsumi Nakagawa, Toshiyuki Komatsu, Shinichi Seito, Yasuo Kuroda, Katsunori Hatanaka
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Patent number: 4996606Abstract: An image reading apparatus comprises a light emitting device for illuminating an original including information to be read; image sensor for inputting an optical information and converting it into an electric signal; and wherein the light emitting device has a xeron glow lamp and a light source which can illuminate a vicinity of a main electrode of the glow lamp.Type: GrantFiled: November 14, 1988Date of Patent: February 26, 1991Assignee: Canon Kabushiki KaishaInventors: Tatsundo Kawai, Makoto Ogura, Koji Tomoda, Hiroo Ichihashi, Shinichi Seitoh, Yasuo Kuroda, Hiroyuki Noguchi
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Patent number: 4987246Abstract: A diamine platinum (II) complex represented by the general formula ##STR1## [wherein R.sub.1 and R.sub.2 are each a lower alkyl group; and two X's are each a halogen atom or jointly form a group represented by ##STR2## (wherein R.sub.3 and R.sub.4 are each a hydrogen atom or a lower alkyl group) or a group represented by ##STR3## (wherein m is 1 or 2)].Type: GrantFiled: June 27, 1989Date of Patent: January 22, 1991Assignee: Nippon Kayaku Kabushiki KaishaInventors: Hiroyoshi Nowatari, Hiroshi Hayami, Yasuo Kuroda, Sumio Yoda, Katsutoshi Takahashi
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Patent number: 4921984Abstract: A diamine platinum (II) complex represented by the general formula ##STR1## [wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each a hydrogen atom or a lower alkyl group; and two X's are each a halogen atom or jointly form a group represented by ##STR2## (wherein R.sub.5 and R.sub.6 are each a hydrogen atom or a lower alkyl group) or a group represented by ##STR3## (wherein m is 1 or 2)].Type: GrantFiled: June 27, 1989Date of Patent: May 1, 1990Assignee: Nippon Kayaku Kabushiki KaishaInventors: Hiroyoshi Nowatari, Hiroshi Hayami, Yasuo Kuroda, Sumio Yoda, Katsutoshi Takahashi
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Patent number: 4864043Abstract: A diamine platinum (II) complex represented by the general formula ##STR1## [wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each a hydrogen atom or a lower alkyl group; and two X's are each a halogen atom or jointly form a group represented by ##STR2## (wherein R.sub.5 and R.sub.6 are each a hydrogen atom or a lower alkyl group) or a group represented by ##STR3## (wherein m is 1 or 2)].Type: GrantFiled: August 19, 1987Date of Patent: September 5, 1989Assignee: Nippon Kayaku Kabushiki KaishaInventors: Hiroyoshi Nowatari, Hiroshi Hayami, Yasuo Kuroda, Sumio Yoda, Katsutoshi Takahashi
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Patent number: 4861905Abstract: A diamine platinum (II) complex represented by the general formula ##STR1## [wherein R.sub.1 and R.sub.2 are each a lower alkyl group; and two X's are each a halogen atom or jointly form a group represented by ##STR2## (wherein R.sub.3 and R.sub.4 are each a hydrogen atom or a lower alkyl group) or a group represented by ##STR3## (wherein m is 1 or 2)].Type: GrantFiled: August 31, 1987Date of Patent: August 29, 1989Assignee: Nippon Kayaku Kabushiki KaishaInventors: Hiroyoshi Nowatari, Hiroshi Hayami, Yasuo Kuroda, Sumio Yoda, Katsutoshi Takahashi
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Patent number: 4772957Abstract: A photoelectric conversion apparatus includes light reception elements which are rendered enabled under application of voltage; a first memory section for storing outputs from the light reception elements in the enabled state; a second memory section for storing outputs from the light reception elements in a disabled state; and an arithmetic operation circuit for correcting the contents of the first memory section in accordance with the contents of the second memory section.Type: GrantFiled: April 9, 1987Date of Patent: September 20, 1988Assignee: Canon Kabushiki KaishaInventors: Katsumi Nakagawa, Hideo Kanno, Yasuo Kuroda, Katsunori Hatanaka