Patents by Inventor Takakuni Matsuda
Takakuni Matsuda 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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Injectable depot formulation comprising optically active tolvaptan and process of producing the same
Patent number: 9597283Abstract: This invention provides an injectable formulation to be administered intramuscularly or subcutaneously that is used for the prevention or treatment of polycystic kidney disease, and that can maintain a therapeutically effective blood concentration of tolvaptan for a long period of time; and a process for producing the same. More specifically, this invention relates to an injectable depot formulation comprising (1) a particle containing optically active tolvaptan as an active ingredient and (2) a pharmaceutically acceptable carrier for injection, and a process for producing the same.Type: GrantFiled: December 27, 2013Date of Patent: March 21, 2017Assignee: OTSUKA PHARMACEUTICAL CO., LTD.Inventors: Daiki Kaneko, Takakuni Matsuda, Kenichi Miyata, Kai Suzuki, Hiroyuki Fujiki, Shizuo Kinoshita, Koji Ohmoto, Miki Aihara -
Publication number: 20170035752Abstract: Disclosed are a method for producing an aripiprazole suspension, wherein the aripiprazole has a mean particle size of 1 to 10 ?m, the method comprising the steps of: (a) combining bulk aripiprazole and a vehicle to form a primary suspension; (b) subjecting the primary suspension to first pulverization using e.g., a high shear pulverizing machine, a dispersion machine that applies shear force to a material to be processed, a colloid mill, an ultrasonic dispersion machine, or a high-pressure jet type emulsifying dispersion machine to form a secondary suspension; and (c) subjecting the secondary suspension to second pulverization using e.g., a high-pressure jet type emulsifying dispersion machine to form a sterile final suspension; and a method for producing a freeze-dried formulation from the aripiprazole suspension.Type: ApplicationFiled: August 22, 2016Publication date: February 9, 2017Inventors: Shogo Hiraoka, Takakuni Matsuda, Junichi Hatanaka
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Patent number: 9533052Abstract: The invention provides an ophthalmic product containing rebamipide, which has a transparency enough to be agreeable feeling on using it and has neutral so weakly acidic pH not to injury of the keratoconjunctiva of a patient suffering from dry eye. An aqueous suspension of crystalline rebamipide which has an improved transparency is provided by adding an aqueous solution of rebamipide dissolved by a base such as sodium hydroxide or an aqueous solution of a salt of rebamipide to an aqueous acidic solution such as hydrochloric acid containing at least one of the compounds selected from water-soluble polymers and surfactants, and mixing them.Type: GrantFiled: October 19, 2015Date of Patent: January 3, 2017Assignee: OTSUKA PHARMACEUTICAL CO., LTD.Inventors: Takakuni Matsuda, Shogo Hiraoka, Yuso Tomohira, Shinichi Ishikawa
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Patent number: 9457026Abstract: Disclosed are a method for producing an aripiprazole suspension, wherein the aripiprazole has a mean particle size of 1 to 10 ?m, the method comprising the steps of: (a) combining bulk aripiprazole and a vehicle to form a primary suspension; (b) subjecting the primary suspension to first pulverization using e.g., a high shear pulverizing machine, a dispersion machine that applies shear force to a material to be processed, a colloid mill, an ultrasonic dispersion machine, or a high-pressure jet type emulsifying dispersion machine to form a secondary suspension; and (c) subjecting the secondary suspension to second pulverization using e.g., a high-pressure jet type emulsifying dispersion machine to form a sterile final suspension; and a method for producing a freeze-dried formulation from the aripiprazole suspension.Type: GrantFiled: July 30, 2008Date of Patent: October 4, 2016Assignee: OTSUKA PHARMACEUTICAL CO., LTD.Inventors: Shogo Hiraoka, Takakuni Matsuda, Junichi Hatanaka
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Publication number: 20160250222Abstract: The present invention provides a combined drug for an injectable depot formulation having a superior effect of preventing and/or treating polycystic kidney disease. More specifically, the present invention relates to a drug for preventing and/or treating polycystic kidney disease, which is an injectable depot formulation comprising a particle containing tolvaptan or a prodrug thereof and a somatostatin analogue. The present invention also relates to a method for preventing and/or treating polycystic kidney disease using the drug.Type: ApplicationFiled: October 14, 2014Publication date: September 1, 2016Applicant: OTSUKA PHARMACEUTICAL CO., LTD.Inventors: Hiroyuki FUJIKI, Miki AIHARA, Katsuji HATTORI, Koji OHMOTO, Takakuni MATSUDA, Daiki KANEKO
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Publication number: 20160101183Abstract: The invention provides an ophthalmic product containing rebamipide, which has a transparency enough to be agreeable feeling on using it and has neutral so weakly acidic pH not to injury of the keratoconjunctiva of a patient suffering from dry eye. An aqueous suspension of crystalline rebamipide which has an improved transparency is provided by adding an aqueous solution of rebamipide dissolved by a base such as sodium hydroxide or an aqueous solution of a salt of rebamipide to an aqueous acidic solution such as hydrochloric acid containing at least one of the compounds selected from water-soluble polymers and surfactants, and mixing them.Type: ApplicationFiled: October 19, 2015Publication date: April 14, 2016Applicant: OTSUKA PHARMACEUTICAL CO., LTD.Inventors: Takakuni MATSUDA, Shogo HIRAOKA, Yuso TOMOHIRA, Shinichi ISHIKAWA
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Patent number: 9303052Abstract: The present invention provides a benzoazepine compound represented by following general formula (1): or a salt thereof, wherein R represents a hydrogen atom, a hydroxy group optionally protected with a protecting group, etc., R1 represents a hydrogen atom or hydroxy-protecting group, and X represents an oxygen atom or a sulfur atom. The benzoazepine compound of the present invention and salts thereof have high solubility in water, and can be suitably used for injections.Type: GrantFiled: August 12, 2013Date of Patent: April 5, 2016Assignee: I. OTSUKA PHARMACEUTICAL CO., LTD.Inventors: Makoto Komatsu, Fumitaka Goto, Yasuhiro Menjo, Keigo Yamada, Takakuni Matsuda, Yusuke Kato
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Patent number: 9211254Abstract: The invention provides an ophthalmic product containing rebamipide, which has a transparency enough to be agreeable feeling on using it and has neutral to weakly acidic pH not to injury of the keratoconjunctiva of a patient suffering from dry eye. An aqueous suspension of crystalline rebamipide which has an improved transparency is provided by adding an aqueous solution of rebamipide dissolved by a base such as sodium hydroxide or an aqueous solution of a salt of rebamipide to an aqueous acidic solution such as hydrochloric acid containing at least one of the compounds selected from water-soluble polymers and surfactants, and mixing them.Type: GrantFiled: November 11, 2005Date of Patent: December 15, 2015Assignee: OTSUKA PHARMACEUTICAL CO., LTD.Inventors: Takakuni Matsuda, Shogo Hiraoka, Yuso Tomohira, Shinichi Ishikawa
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INJECTABLE DEPOT FORMULATION COMPRISING OPTICALLY ACTIVE TOLVAPTAN AND PROCESS OF PRODUCING THE SAME
Publication number: 20150352041Abstract: This invention provides an injectable formulation to be administered intramuscularly or subcutaneously that is used for the prevention or treatment of polycystic kidney disease, and that can maintain a therapeutically effective blood concentration of tolvaptan for a long period of time; and a process for producing the same. More specifically, this invention relates to an injectable depot formulation comprising (1) a particle containing optically active tolvaptan as an active ingredient and (2) a pharmaceutically acceptable carrier for injection, and a process for producing the same.Type: ApplicationFiled: December 27, 2013Publication date: December 10, 2015Inventors: Daiki KANEKO, Takakuni MATSUDA, Kenichi MIYATA, Kai SUZUKI, Hiroyuki FUJIKI, Shizuo KINOSHITA, Koji OHMOTO, Miki AIHARA -
Patent number: 9073868Abstract: The present invention provides a benzazepine compound that can maintain for a long period of time the blood level of tolvaptan enabling to provide the desired pharmaceutical effects. The benzazepine compound of the present invention is represented by general formula (1) wherein R1 represents a —CO—(CH2)n—COR2 group (wherein n is an integer of 1 to 4, and R2 is (2-1) a hydroxy group; (2-2) a lower alkoxy group optionally substituted with a hydroxy group, a lower alkanoyl group, a lower alkanoyloxy group, a lower alkoxycarbonyloxy group, a cycloalkyloxycarbonyloxy group, or 5 -methyl-2-oxo-1,3-dioxol-4-yl; or (2-3) an amino group optionally substituted with a hydroxy-lower alkyl group), or the like.Type: GrantFiled: September 24, 2013Date of Patent: July 7, 2015Assignee: OTSUKA PHARMACEUTICAL CO., LTD.Inventors: Kazumi Kondo, Yasuhiro Menjo, Takahiro Tomoyasu, Shin Miyamura, Yuso Tomohira, Takakuni Matsuda, Keigo Yamada, Yusuke Kato
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Publication number: 20150093442Abstract: An object of the present invention is to provide a storage-stable injectable preparation comprising a composition comprising a poorly soluble drug as an active ingredient and a dispersion medium. Another object of the present invention is to provide a compact, lightweight prefilled syringe by filling a syringe with the injectable preparation. The present invention provides an injectable preparation comprising a composition comprising a poorly soluble drug, a dispersion medium, and a specific suspending agent, the composition having a viscosity of 40 pascal-seconds or more in at least one point in the shear rate range of 0.01 to 0.02 s?1 and having a viscosity of 0.2 pascal-seconds or less in at least one point in the shear rate range of 900 to 1,000 s?1, as measured.Type: ApplicationFiled: April 23, 2013Publication date: April 2, 2015Inventors: Daiki Kaneko, Takakuni Matsuda, Yusuke Hoshika
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Patent number: 8952013Abstract: A controlled release sterile freeze-dried aripiprazole formulation is provided which is formed of aripiprazole of a desired mean particle size and a vehicle therefor, which upon constitution with water and intramuscular injection releases aripiprazole over a period of at least about one week and up to about eight weeks. A method for preparing the controlled release freeze-dried aripiprazole formulation, and a method for treating schizophrenia employing the above formulation are also provided.Type: GrantFiled: December 28, 2011Date of Patent: February 10, 2015Assignee: Otsuka Pharmaceutical Co., Ltd.Inventors: Janusz W. Kostanski, Takakuni Matsuda, Manoj Nerurkar, Vijay H. Naringrekar
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Publication number: 20150024056Abstract: A controlled release sterile freeze-dried aripiprazole formulation is provided which is formed of aripiprazole of a desired mean particle size and a vehicle thereof, which upon constitution with water and intramuscular injection releases aripiprazole over a period of at least about one week and up to about eight weeks. A method for preparing the controlled release freeze-dried aripiprazole formulation, and a method for treating schizophrenia employing the above formulation are also provided.Type: ApplicationFiled: October 6, 2014Publication date: January 22, 2015Applicant: OTSUKA PHARMACEUTICAL CO., LTD.Inventors: Janusz W. KOSTANSKI, Takakuni MATSUDA, Manoj NERURKAR, Vijay H. NARINGREKAR
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Patent number: 8796309Abstract: The present invention provides a pharmaceutical composition that can efficiently achieve its medicinal action by having excellent basic pharmacologically active substance absorbency, even the basic pharmacologically active substance is poorly soluble, the pharmaceutical composition being prepared by adding (i) a basic pharmacologically active substance together with (ii) a fatty acid and organic acid glycerol ester and/or fatty acid and organic acid polyglycerol ester.Type: GrantFiled: November 2, 2006Date of Patent: August 5, 2014Assignee: Otsuka Pharmaceutical Co., Ltd.Inventors: Yasuo Yamaguchi, Takakuni Matsuda, Yuso Tomohira
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Patent number: 8785386Abstract: The present invention provides a benzazepine compound that can maintain for a long period of time the blood level of tolvaptan enabling to provide the desired pharmaceutical effects. The benzazepine compound of the present invention is represented by general formula (1) wherein R1 represents a —CO—(CH2)n—COR2 group (wherein n is an integer of 1 to 4, and R2 is (2-1) a hydroxy group; (2-2) a lower alkoxy group optionally substituted with a hydroxy group, a lower alkanoyl group, a lower alkanoyloxy group, a lower alkoxycarbonyloxy group, a cycloalkyloxycarbonyloxy group, or 5-methyl-2-oxo-1,3-dioxol-4-yl; or (2-3) an amino group optionally substituted with a hydroxy-lower alkyl group), or the like.Type: GrantFiled: September 24, 2013Date of Patent: July 22, 2014Assignee: Otsuka Pharmaceutical Co., Ltd.Inventors: Kazumi Kondo, Yasuhiro Menjo, Takahiro Tomoyasu, Shin Miyamura, Yuso Tomohira, Takakuni Matsuda, Keigo Yamada, Yusuke Kato
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Patent number: 8722679Abstract: A controlled release sterile freeze-dried aripiprazole formulation is provided which is formed of aripiprazole of a desired mean particle size and a vehicle therefor, which upon constitution with water and intramuscular injection releases aripiprazole over a period of at least about one week and up to about eight weeks. A method for preparing the controlled release freeze-dried aripiprazole formulation, and a method for treating schizophrenia employing the above formulation are also provided.Type: GrantFiled: October 31, 2007Date of Patent: May 13, 2014Assignee: Otsuka Pharmaceutical Co., Ltd.Inventors: Janusz W. Kostanski, Takakuni Matsuda, Manoj Nerurkar, Vijay H. Naringrekar
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Patent number: 8669229Abstract: The present invention provides a benzazepine compound that can maintain for a long period of time the blood level of tolvaptan enabling to provide the desired pharmaceutical effects. The benzazepine compound of the present invention is represented by general formula (1) wherein R1 represents a —CO—(CH2)n—COR2 group (wherein n is an integer of 1 to 4, and R2 is (2-1) a hydroxy group; (2-2) a lower alkoxy group optionally substituted with a hydroxy group, a lower alkanoyl group, a lower alkanoyloxy group, a lower alkoxycarbonyloxy group, a cycloalkyloxycarbonyloxy group, or 5-methyl-2-oxo-1,3-dioxo-4-yl; or (2-3) an amino group optionally substituted with a hydroxy-lower alkyl group), or the like.Type: GrantFiled: June 26, 2008Date of Patent: March 11, 2014Assignee: Otsuka Pharmaceutical Co., Ltd.Inventors: Kazumi Kondo, Yasuhiro Menjo, Takahiro Tomoyasu, Shin Miyamura, Yuso Tomohira, Takakuni Matsuda, Keigo Yamada, Yusuke Kato
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Publication number: 20140024619Abstract: The present invention provides a benzazepine compound that can maintain for a long period of time the blood level of tolvaptan enabling to provide the desired pharmaceutical effects. The benzazepine compound of the present invention is represented by general formula (1) wherein R1 represents a —CO—(CH2)n—COR2 group (wherein n is an integer of 1 to 4, and R2 is (2-1) a hydroxy group; (2-2) a lower alkoxy group optionally substituted with a hydroxy group, a lower alkanoyl group, a lower alkanoyloxy group, a lower alkoxycarbonyloxy group, a cycloalkyloxycarbonyloxy group, or 5-methyl-2-oxo-1,3-dioxol-4-yl; or (2-3) an amino group optionally substituted with a hydroxy-lower alkyl group), or the like.Type: ApplicationFiled: September 24, 2013Publication date: January 23, 2014Applicant: Otsuka Pharmaceutical Co., Ltd.Inventors: Kazumi KONDO, Yasuhiro MENJO, Takahiro TOMOYASU, Shin MIYAMURA, Yuso TOMOHIRA, Takakuni MATSUDA, Keigo YAMADA, Yusuke KATO
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Publication number: 20140024640Abstract: The present invention provides a benzazepine compound that can maintain for a long period of time the blood level of tolvaptan enabling to provide the desired pharmaceutical effects. The benzazepine compound of the present invention is represented by general formula (1) wherein R1 represents a —CO—(CH2)n—COR2 group (wherein n is an integer of 1 to 4, and R2 is (2-1) a hydroxy group; (2-2) a lower alkoxy group optionally substituted with a hydroxy group, a lower alkanoyl group, a lower alkanoyloxy group, a lower alkoxycarbonyloxy group, a cycloalkyloxycarbonyloxy group, or 5-methyl-2-oxo-1,3-dioxol-4-yl; or (2-3) an amino group optionally substituted with a hydroxy-lower alkyl group), or the like.Type: ApplicationFiled: September 24, 2013Publication date: January 23, 2014Applicant: OTSUKA PHARMACEUTICAL CO., LTD.Inventors: Kazumi KONDO, Yasuhiro MENJO, Takahiro TOMOYASU, Shin MIYAMURA, Yuso TOMOHIRA, Takakuni MATSUDA, Keigo YAMADA, Yusuke KATO
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Publication number: 20140018369Abstract: A controlled release sterile freeze-dried aripiprazole formulation is provided which is formed of aripiprazole of a desired mean particle size and a vehicle therefor, which upon constitution with water and intramuscular injection releases aripiprazole over a period of at least about one week and up to about eight weeks. A method for preparing the controlled release freeze-dried aripiprazole formulation, and a method for treating schizophrenia employing the above formulation are also provided.Type: ApplicationFiled: September 19, 2013Publication date: January 16, 2014Applicant: OTSUKA PHARMACEUTICAL CO., LTD.Inventors: Janusz KOSTANSKI, Takakuni MATSUDA, Manoj NERURKAR, Vijay H. NARINGREKAR