Patents by Inventor Kikuo Ataka
Kikuo Ataka 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: 8093349Abstract: A terminally-modified polybranched polyimide which can be efficiently complexed with an inorganic material is obtained by reacting a component (a): tetracarboxylic dianhydride; a component (b): as an amine component, a mixture of a triamine and a diamine (which may be composed of a triamine only); and a component (c): as a terminal component, a compound selected from general formulae (1-1) to (1-4). H2N—X—R1??(1-1) (In the formula, X represents a single bond or an alkylene group having 1 to 3 carbon atoms, and R1 represents a nitrogen-containing heterocyclic group). H2N—X—R1??(1-2) (In the formula, X is as defined above, and R1 represents a sulfur-containing heterocyclic group or an aryl group having a thiol or thioether group in the molecule.) (In the formula, R represents a nitrogen-containing heterocyclic group.) (In the formula, R represents a monovalent residue.Type: GrantFiled: July 25, 2007Date of Patent: January 10, 2012Assignee: Ube Industries, Ltd.Inventors: Kikuo Ataka, Tetsurou Tsuji
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Patent number: 7955662Abstract: An aligned metal-particle film, in which metal particles are aligned in a polymer as a layer with a certain interval in parallel with a substrate is disclosed. The aligned metal-particle film is manufactured by forming a polymer film containing a metal component on a reflecting substrate; and irradiating the polymer film with light at a particular wavelength, whereby metal particles are aligned in parallel with the substrate in the polymer.Type: GrantFiled: March 20, 2007Date of Patent: June 7, 2011Assignees: The University of Tokyo, UBE Industries, Ltd.Inventors: Hisashi Ohsaki, Akihiro Matsubayashi, Kikuo Ataka, Kenji Fukunaga, Tetsurou Tsuji
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Publication number: 20100009206Abstract: A terminally-modified polybranched polyimide which can be efficiently complexed with an inorganic material is obtained by reacting a component (a): tetracarboxylic dianhydride; a component (b): as an amine component, a mixture of a triamine and a diamine (which may be composed of a triamine only); and a component (c): as a terminal component, a compound selected from general formulae (1-1) to (1-4). H2N—X—R1??(1-1) (In the formula, X represents a single bond or an alkylene group having 1 to 3 carbon atoms, and R1 represents a nitrogen-containing heterocyclic group). H2N—X—R1??(1-2) (In the formula, X is as defined above, and R1 represents a sulfur-containing heterocyclic group or an aryl group having a thiol or thioether group in the molecule). (In the formula, R represents a nitrogen-containing heterocyclic group). (In the formula, R represents a monovalent residue).Type: ApplicationFiled: July 25, 2007Publication date: January 14, 2010Applicant: UBE INDUSTRIES, LTD.Inventors: Kikuo Ataka, Tetsurou Tsuji
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Publication number: 20090192297Abstract: Disclosed is a biological molecule-immobilized carbon membrane which comprises a porous carbon membrane and a biological molecule (e.g., an enzyme) immobilized on the carbon membrane, wherein the porous carbon membrane has three-dimensional cancellous pores through which fluid can permeate. The carbon membrane can have a large amount of a biological molecule (e.g., an enzyme) immobilized thereon and can also have a higher level of enzymatic activity or the like compared to a conventional one. Therefore, the carbon membrane is useful as an electrode for a bio-sensor or a bio-fuel cell.Type: ApplicationFiled: February 2, 2007Publication date: July 30, 2009Applicant: Ube Industries, Ltd.Inventors: Youichi Yoshida, Shinichiro Sadaike, Shyusei Ohya, Kikuo Ataka
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Publication number: 20080081207Abstract: An aligned metal-particle film, in which metal particles are aligned in a polymer as a layer with a certain interval in parallel with a substrate is disclosed. The aligned metal-particle film is manufactured by forming a polymer film containing a metal component on a reflecting substrate; and irradiating the polymer film with light at a particular wavelength, whereby metal particles are aligned in parallel with the substrate in the polymer.Type: ApplicationFiled: March 20, 2007Publication date: April 3, 2008Inventors: Hisashi Ohsaki, Akihiro Matsubayashi, Kikuo Ataka, Kenji Fukunaga, Tetsurou Tsuji
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Patent number: 7332632Abstract: The method for producing an aldehyde or ketone compound from a corresponding primary or secondary alcohol at relatively high temperature within a short time with a high yield including a step (1) of reacting a sulfoxide compound with an activating agent to produce an activation reaction product; a step (2) of reacting the activation reaction product with a primary or secondary alcohol to produce an alkoxysulfonium salt; and a step (3) of reacting the reaction product with a base to produce an aldehyde or ketone; wherein at least one of the steps, preferably the step (1) and step (2), are carried out by using a microreactor.Type: GrantFiled: November 22, 2004Date of Patent: February 19, 2008Assignee: Ubē Industries, Ltd.Inventors: Kikuo Ataka, Hiroyuki Miyata, Tatsuya Kawaguchi, Junichi Yoshida, Kazuhiro Mae
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Publication number: 20070149823Abstract: The method for producing an aldehyde or ketone compound from a corresponding primary or secondary alcohol at relatively high temperature within a short time with a high yield including a step (1) of reacting a sulfoxide compound with an activating agent to produce an activation reaction product; a step (2) of reacting the activation reaction product with a primary or secondary alcohol to produce an alkoxysulfonium salt; and a step (3) of reacting the reaction product with a base to produce an aldehyde or ketone; wherein at least one of the steps, preferably the step (1) and step (2), are carried out by using a microreactor.Type: ApplicationFiled: November 22, 2004Publication date: June 28, 2007Applicant: Ube Industries, Ltd., a corporation of JapanInventors: Kikuo Ataka, Hiroyuki Miyata, Tatsuya Kawaguchi, Junichi Yoshida, Kazuhiro Mae
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Patent number: 6916792Abstract: The present invention is to provide a process for producing a 2?-O-acetyl-4?-formyl-8,9-anhydroerythromycin A 6,9-hemiketal compound 4, and it provide a process for producing an erythromycin compound which comprises reacting a formylating agent with a 2?-O-acetylerythromycin A compound 2 to obtain 2-?-O-acetyl-4?-O-formylerythromycin A compound 3, then, acting an acid on Compound 3 to subject to hemiketalation, and then adding an aqueous basic solution in an aqueous solution to precipitate Compound 4 as free crystals.Type: GrantFiled: June 12, 2002Date of Patent: July 12, 2005Assignees: UBE Industries, Ltd., Chugai Seiyaku Kabushiki KaishaInventors: Hiroyuki Miyata, Akira Takama, Tatsuya Kawaguchi, Kazuma Sakata, Kikuo Ataka, Masayoshi Oku, Hiroyuki Suenaga
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Patent number: 6914154Abstract: A production process, especially a continuous production process, for a biphenyltetracarboxylic acid tetraester characterized by carrying out, in parallel, a step of preliminarily mixing a phthalic acid diester and a palladium compound-containing catalyst to prepare a starting mixture, a step of continuously or intermittently supplying the starting mixture to a reactor, a step of conducting oxidative dimerization reaction of the phthalic acid diester in a temperature range of from 140° C. and lower than 250° C. while supplying molecular oxygen to the reactor to form a reaction mixture in the reactor, and a step of continuously or intermittently removing a portion of the reaction mixture from the reactor.Type: GrantFiled: August 12, 2003Date of Patent: July 5, 2005Assignee: Ube Industries, Ltd.Inventors: Yasushi Yamamoto, Tetsuro Tsuji, Jun Haruta, Kikuo Ataka, Noboru Kakeya
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Patent number: 6906039Abstract: The present invention is to provide a process for producing a 2?-O-acetyl-4?-O-formyl-8,9-anhydroerythromycin A 6,9-hemiketal compound 4, and it provide a process for producing an erythromycin compound which comprises reacting a formylating agent with a 2?-O-acetylerythromycin A compound 2 to obtain 2?-O-acetyl-4?-O-formylerythromycin A compound 3, then, acting an acid on Compound 3 to subject to hemiketalation, and then adding an aqueous basic solution in an aqueous solution to precipitate Compound 4 as free crystals.Type: GrantFiled: June 12, 2002Date of Patent: June 14, 2005Assignees: Ube Industries, Ltd., Chugai Seikyaku Kabushiki KaishaInventors: Hiroyuki Miyata, Akira Takama, Yasuhito Yamamoto, Kikuo Ataka
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Publication number: 20040204573Abstract: The present invention is to provide a process for producing a 2′-O-acetyl-4″-O-formyl-8,9-anhydroerythromycin A 6,9-hemiketal compound 4, and it provide a process for producing an erythromycin compound which comprises reacting a formylating agent with a 2′-O-acetylerythromycin A compound 2 to obtain 2′-O-acetyl-4″-O-formylerythromycin A compound 3, then, acting an acid on Compound 3 to subject to hemiketalation, and then adding an aqueous basic solution in an aqueous solution to precipitate Compound 4 as free crystals.Type: ApplicationFiled: December 11, 2003Publication date: October 14, 2004Inventors: Hiroyuki Miyata, Akira Takama, Yasuhito Yamamoto, Kikuo Ataka
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Publication number: 20040192902Abstract: The present invention is to provide a process for producing an erythromycin compound by subjecting a 2′-O-acetyl-4″-O-formyl-11-oxo-8,9-anhydroerythromycin A 6,9-hemiketal compound 1 to alkylation, which comprises reacting Compound 1 with an alkylating agent in the presence of a base in a mixed solvent of 0.18 to 1.05 equivalent of water based on Compound 1 and an organic solvent to give a 2′-O-acetyl-4″-O-formyl-11-oxo-12-alkoxy-8,9-anhydroerythromycin A 6,9-hemiketal compound 3.Type: ApplicationFiled: December 11, 2003Publication date: September 30, 2004Inventors: Hiroyuki Miyata, Akira Takama, Tatsuya Kawaguchi, Kazuma Sakata, Kikuo Ataka, Masayoshi Oku
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Patent number: 6723860Abstract: The present invention provides a novel 7a-alkoxy-4H-pyrano-[3,2-d]-oxazol-2(3H)-one represented by the formula (I): wherein R1 and R2 each represent a hydrogen atom, an alkyl group, an alkenyl group, an aryl group or an aralkyl group; R3 represents an alkyl group, a cyclo-alkyl group, an alkenyl group, an aryl group or an aralkyl group, provided that a 2-alkenyl group is excluded from the alkenyl group of R3; and R4 represents an alkyl group, an aryl group, an alkoxycarbonyl group or a cyano group, and a process for producing the same which comprises reacting 5-alkoxy-2(3H)-oxazolone with an &agr;,&bgr;-unsaturated ketone in the presence of a Lewis acid in a solvent.Type: GrantFiled: November 16, 2001Date of Patent: April 20, 2004Assignee: UBE Industries, Ltd.Inventors: Hiroyuki Miyata, Takashi Honma, Yasuhito Yamamoto, Kikuo Ataka
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Publication number: 20040039222Abstract: A production process, especially a continuous production process, for a biphenyltetracarboxylic acid tetraester characterized by carrying out, in parallel, a step of preliminarily mixing a phthalic acid diester and a palladium compound-containing catalyst to prepare a starting mixture, a step of continuously or intermittently supplying the starting mixture to a reactor, a step of conducting oxidative dimerization reaction of the phthalic acid diester in a temperature range of from 140° C. and lower than 250° C. while supplying molecular oxygen to the reactor to form a reaction mixture in the reactor, and a step of continuously or intermittently removing a portion of the reaction mixture from the reactor.Type: ApplicationFiled: August 12, 2003Publication date: February 26, 2004Applicant: UBE INDUSTRIES, LTD.Inventors: Yasushi Yamamoto, Tetsuro Tsuji, Jun Haruta, Kikuo Ataka, Noboru Kakeya
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Patent number: 6414160Abstract: The present invention relates to a process for producing 4-alkoxycarbonyl-2-oxazolidinone compound represented by the formula (III): wherein R1 represents H, an alkyl group, an cycloalkyl group, an alkenyl group or a phenyl group, R2 represents H, an alkyl group, a phenyl group or an alkenyl group, R3 represents an alkyl group, a cycloalkyl group, an alkenyl group, or a phenyl group, and R4 represents H, an alkyl group, an alkenyl group, acycloalkyl group, alkynyl group, an aryl group, a 5- or 6-membered heteroaromatic ring group, an alkoxycarbonyl group, an acetyl group or a benzoyl group, which comprises reacting a 5-alkoxy-2(3H)oxazolone compound represented by the formula (I): wherein R1, R2 and R3 have the same meanings as defined above, and an aldehyde compound represented by the formula (II): R4CHO (II) wherein R4 has the same meaning as defined above, in the presence of a Lewis acid catalyst.Type: GrantFiled: January 10, 2000Date of Patent: July 2, 2002Assignee: UBE Industries, Ltd.Inventors: Hiroyuki Miyata, Nobuya Satake, Takashi Honma, Kikuo Ataka
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Publication number: 20020072612Abstract: The present invention provides a novel 7a-alkoxy-4H-pyrano-[3,2-d]-oxazol-2(3H)-one represented by the formula (I): 1Type: ApplicationFiled: November 16, 2001Publication date: June 13, 2002Inventors: Hiroyuki Miyata, Takashi Honma, Yasuhito Yamamoto, Kikuo Ataka
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Patent number: 6307091Abstract: The present invention is to provided a trifluoro-substituted benzoic acid, an ester thereof, particularly 2,3,4-trifluoro-5-iodobenzonic acid, 2,3,4-trifluoro-5-trifluoromethylbenzonic acid, esters thereof, which are useful as a starting material for synthesizeing a quinolonecarboxylic acid compound useful as a medicine, an anti-bacterial agent or an antiviral agent, and processes for preparing these compounds and 2,4,5-trifluoro-3-iodobenzonic acid, 2,4,5-trifluoro-3-trifluoromethylbenzoic acid and esters thereof.Type: GrantFiled: October 3, 2000Date of Patent: October 23, 2001Assignee: Ube Industries, Ltd.Inventors: Yasuhito Yamamoto, Yasuhiro Yoneda, Kikuo Ataka, Naoyuki Yokota
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Patent number: 6160171Abstract: The present invention is to provide a trifluoro-substituted benzoic acid, an ester thereof, particularly 2,3,4-trifluoro-5-iodobenzoic acid, 2,3,4-trifluoro-5-trifluoromethylbenzoic acid, esters thereof, which are useful as a starting material for synthesizing a quinolonecarboxylic acid compound useful as a medicine, an anti-bacterial agent or an antiviral agent, and processes for preparing these compounds and 2,4,5-trifluoro-3-iodobenzoic acid, 2,4,5-trifluoro-3-trifluoromethylbenzoic acid and esters thereof.Type: GrantFiled: February 17, 1999Date of Patent: December 12, 2000Assignee: Ube Industries, Ltd.Inventors: Yasuhito Yamamoto, Yasuhiro Yoneda, Kikuo Ataka, Naoyuki Yokota
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Patent number: 6121475Abstract: In a process for preparing an optically active .beta.-hydroxyester derivative by enantioselective aldol addition reaction between an aldehyde and a ketene silylacetal, the enantioselective aldol addition reaction is performed in the presence of an organic base and a platinum-containing catalyst composed of an optically active bisphosphine-platinum complex having two P--Pt bondings which are equivalent to each other, showing in its .sup.31 P NMR spectrum a single peak assigned to P--Pt bonding.Type: GrantFiled: September 17, 1999Date of Patent: September 19, 2000Assignee: Ube Industries, Ltd.Inventors: Osamu Fujimura, Kikuo Ataka
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Patent number: 6100239Abstract: The present invention discloses the compound represented by the formula (I) ##STR1## wherein R.sub.1 and R.sub.2 are hydrogen atoms, R.sub.3 represents a hydrogen atom, a hydroxyl group or an amino group, or R.sub.2 and R.sub.3 in combination represent .dbd.O or .dbd.NOR.sub.11, where R.sub.11 represents a hydrogen atom or a lower alkyl group, R.sub.4 and R.sub.5 in combination represent .dbd.O, Y represents --N(R.sub.6) (R.sub.7) or --N.sup.+ (R.sub.8) (R.sub.9) (R.sub.10)X.sup.- ; where R.sub.6 to R.sub.10 each represent a hydrogen atom, a lower alkyl group, etc., and X.sup.- represents an anion,a pharmaceutical composition containing the same and a process for producing the same.Type: GrantFiled: May 25, 1999Date of Patent: August 8, 2000Assignee: Chugai Seiyaku Kabushiki KaishaInventors: Kikuo Ataka, Hiroyuki Miyata, Akira Takama