Patents by Inventor Hashime Kanazawa
Hashime Kanazawa 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: 9365553Abstract: A heterocyclic compound useful as an antiallergic agent is provided. A compound represented by the following formula (1) or a salt thereof: wherein the ring A is a homocyclic or heterocyclic ring; the ring B is a heterocyclic ring which contains G and nitrogen atom N as constituent atoms thereof, wherein G is CH or N; R1 is a carbonyl group or an alkylene group; R2a and R2b are an alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group; X is an oxygen atom or a sulfur atom; Z is a hydroxyl group, an alkoxy group, a cycloalkyloxy group, an aryloxy group, an aralkyloxy group, an amino group, or an N-substituted amino group; and n is 0 or 1; with the proviso that when the ring A is a benzene ring or when the ring B is a piperazine ring, R1 is an alkylene group which may have a substituent.Type: GrantFiled: May 23, 2011Date of Patent: June 14, 2016Assignee: Aska Pharmaceutical Co., Ltd.Inventors: Makoto Okada, Koichi Hasumi, Takahiro Nishimoto, Miwa Yoshida, Kouki Ishitani, Tomoji Aotsuka, Hashime Kanazawa
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Patent number: 8722094Abstract: A powdery porous carrier comprising a porous silicon-containing carrier is impregnated with a solution containing an organic solvent and an active ingredient hardly soluble in water, and the organic solvent is removed to give a solid dispersion having the active ingredient supported to the porous carrier without a treatment with a supercritical fluid. The porous silicon-containing carrier has a heating loss of not more than 4% by weight at a temperature of 950° C. for 2 hours (e.g., a spherical silicon-containing carrier such as a spherical porous silica). The porous silicon-containing carrier may be a spherical silica having a mean pore size of 10 to 40 nm and an oil absorption of 175 to 500 ml/100 g. A pharmaceutical composition (e.g., tablets, granules, or capsules) may be prepared from the solid dispersion and a pharmaceutically acceptable carrier.Type: GrantFiled: March 10, 2009Date of Patent: May 13, 2014Assignee: Aska Pharmaceutical Co., Ltd.Inventors: Kazushi Yoshida, Norimichi Okubo, Junichi Sakata, Hashime Kanazawa
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Publication number: 20130085127Abstract: A heterocyclic compound useful as an antiallergic agent is provided. A compound represented by the following formula (1) or a salt thereof: wherein the ring A is a homocyclic or heterocyclic ring; the ring B is a heterocyclic ring which contains G and nitrogen atom N as constituent atoms thereof, wherein G is CH or N; R1 is a carbonyl group or an alkylene group; R2a and R2b are an alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group; X is an oxygen atom or a sulfur atom; Z is a hydroxyl group, an alkoxy group, a cycloalkyloxy group, an aryloxy group, an aralkyloxy group, an amino group, or an N-substituted amino group; and n is 0 or 1; with the proviso that when the ring A is a benzene ring or when the ring B is a piperazine ring, R1 is an alkylene group which may have a substituent.Type: ApplicationFiled: May 23, 2011Publication date: April 4, 2013Applicant: ASKA Pharmaceutical Co., LtdInventors: Makoto Okada, Koichi Hasumi, Takahiro Nishimoto, Miwa Yoshida, Kouki Ishitani, Tomoji Aotsuka, Hashime Kanazawa
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Patent number: 8193356Abstract: The compound of the present invention is a novel compound which has a specific heterocycle skeleton, particularly a pyrazolonaphthyridine or pyrazoloquinoline skeleton having an organic group (e.g., a carbocycle and a heterocycle) bonding through an alkylene group at 3-position and a carbocycle bonding at 5-position and has a phosphodiesterase IV inhibitory activity. At least one of the ring (the carbocycle or the heterocycle) bonding at 3-position of the pyrazolonaphthyridine skeleton and the carbocycle bonding at 5-position may have a halogenated alkyl group and/or a halogenated alkoxy group as a substituent. Such a compound or a salt thereof is useful as a phosphodiesterase IV inhibitor and the like. According to the present invention, a novel compound having a high phosphodiesterase IV inhibitory effect can be provided.Type: GrantFiled: September 15, 2006Date of Patent: June 5, 2012Assignee: Aska Pharmaceutical Co., Ltd.Inventors: Hashime Kanazawa, Tomoji Aotsuka, Kentarou Kumazawa, Kouki Ishitani, Takashi Nose
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Patent number: 8119686Abstract: A novel spiroquinone derivative having a high ABCA1 stabilization effect and being useful for prophylactic and/or therapeutic agents for various diseases developing hypo-high density lipoproteinemia is obtained. The novel spiroquinone derivative is a compound represented by the following formula: wherein R1a, R1b, R1c and R1d each represents a hydrogen atom, a halogen atom, an alkyl group which may have a substituent, or an alkoxy group which may have a substituent, and R2a and R2b each represents a hydrogen atom, or an alkyl group which may have a substituent (e.g.Type: GrantFiled: November 21, 2007Date of Patent: February 21, 2012Assignee: Hykes Laboratories LLCInventors: Shinji Yokoyama, Hashime Kanazawa, Tomoji Aotsuka
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Patent number: 8034801Abstract: A pharmaceutical preparation useful for alleviating or treating a pain, e.g., a chronic pain (particularly, a neuropathic pain) is provided. The pharmaceutical preparation contains (a) a propionic acid-derived nonsteroidal anti-inflammatory agent (e.g., ibuprofen), (b) a non-pyrazolone antipyretic analgesic agent (e.g., acetaminophen), and (c) an opioid analgesic agent (e.g., codeine phosphate, dihydrocodeine phosphate). The pharmaceutical preparation may contain 5 to 100 parts by weight of the antipyretic analgesic agent (b) or 0.5 to 500 parts by weight of the analgesic agent (c) relative to 100 parts by weight of the anti-inflammatory agent (a). The pharmaceutical preparation may be substantially free from a nontoxic N-methyl-D-aspartate receptor antagonist and may contain 20 to 80 parts by weight of the antipyretic analgesic agent (b) and 1 to 100 parts by weight of the analgesic agent (c) relative to 100 parts by weight of the anti-inflammatory agent (a).Type: GrantFiled: July 12, 2006Date of Patent: October 11, 2011Assignee: Aska Pharmaceutical Co., Ltd.Inventors: Hiroki Hamura, Kenji Shimizu, Hashime Kanazawa
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Publication number: 20110020455Abstract: A powdery porous carrier comprising a porous silicon-containing carrier is impregnated with a solution containing an organic solvent and an active ingredient hardly soluble in water, and the organic solvent is removed to give a solid dispersion having the active ingredient supported to the porous carrier without a treatment with a supercritical fluid. The porous silicon-containing carrier has a heating loss of not more than 4% by weight at a temperature of 950° C. for 2 hours (e.g., a spherical silicon-containing carrier such as a spherical porous silica). The porous silicon-containing carrier may be a spherical silica having a mean pore size of 10 to 40 nm and an oil absorption of 175 to 500 ml/100 g. A pharmaceutical composition (e.g., tablets, granules, or capsules) may be prepared from the solid dispersion and a pharmaceutically acceptable carrier.Type: ApplicationFiled: March 10, 2009Publication date: January 27, 2011Inventors: Kazushi Yoshida, Norimichi Okubo, Junichi Sakata, Hashime Kanazawa
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Publication number: 20100093782Abstract: The target is to provide PDE IV inhibitors which have a highly potent anti-asthmatic and/or COPD-prophylactic/therapeutic profile with unexpectedly excellent safety.Type: ApplicationFiled: September 15, 2009Publication date: April 15, 2010Inventors: Hashime Kanazawa, Tomoji Aotsuka, Kentarou Kumazawa, Kouki Ishitani, Takashi Nose
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Publication number: 20100056613Abstract: A novel spiroquinone derivative having a high ABCA1 stabilization effect and being useful for prophylactic and/or therapeutic agents for various diseases developing hypo-high density lipoproteinemia is obtained. The novel spiroquinone derivative is a compound represented by the following formula: wherein R1a, R1b, R1c and R1d each represents a hydrogen atom, a halogen atom, an alkyl group which may have a substituent, or an alkoxy group which may have a substituent, and R2a and R2b each represents a hydrogen atom, or an alkyl group which may have a substituent (e.g.Type: ApplicationFiled: November 21, 2007Publication date: March 4, 2010Applicant: Hykes Laboratories LLCInventors: Shinji Yokoyama, Hashime Kanazawa, Tomoji Aotsuka
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Publication number: 20090318496Abstract: A preparation (pharmaceutical composition) reducing a concentration of a free fatty acid and/or fibrinogen in the blood is prepared. The preparation contains a statin agent comprising at least a statin compound having a benzopyridine skeleton (e.g., pitavastatin) and a fibrate agent (e.g., fenofibrate). The preparation is useful as a preventive or treating agent for hyper-free fatty acidemia, metabolic syndrome, or type II diabetes.Type: ApplicationFiled: August 4, 2006Publication date: December 24, 2009Inventors: Hashime Kanazawa, Masaya Morimoto, Naoto Tanimori
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Patent number: 7608716Abstract: The target is to provide PDE IV inhibitors which have a highly potent anti-asthmatic and/or COPD-prophylactic/therapeutic profile with unexpectedly excellent safety.Type: GrantFiled: November 5, 2003Date of Patent: October 27, 2009Assignee: Aska Pharmaceutical Co., Ltd.Inventors: Hashime Kanazawa, Tomoji Aotsuka, Kentarou Kumazawa, Kouki Ishitani, Takashi Nose
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Publication number: 20090253729Abstract: A pharmaceutical preparation useful for alleviating or treating a pain, e.g., a chronic pain (particularly, a neuropathic pain) is provided. The pharmaceutical preparation contains (a) a propionic acid-derived nonsteroidal anti-inflammatory agent (e.g., ibuprofen), (b) a non-pyrazolone antipyretic analgesic agent (e.g., acetaminophen), and (c) an opioid analgesic agent (e.g., codeine phosphate, dihydrocodeine phosphate). The pharmaceutical preparation may contain 5 to 100 parts by weight of the antipyretic analgesic agent (b) or 0.5 to 500 parts by weight of the analgesic agent (c) relative to 100 parts by weight of the anti-inflammatory agent (a). The pharmaceutical preparation may be substantially free from a nontoxic N-methyl-D-aspartate receptor antagonist and may contain 20 to 80 parts by weight of the antipyretic analgesic agent (b) and 1 to 100 parts by weight of the analgesic agent (c) relative to 100 parts by weight of the anti-inflammatory agent (a).Type: ApplicationFiled: July 12, 2006Publication date: October 8, 2009Inventors: Hiroki Hamura, Kenji Shimizu, Hashime Kanazawa
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Publication number: 20090131467Abstract: The compound of the present invention is a novel compound which has a specific heterocycle skeleton, particularly a pyrazolonaphthyridine or pyrazoloquinoline skeleton having an organic group (e.g., a carbocycle and a heterocycle) bonding through an alkylene group at 3-position and a carbocycle bonding at 5-position and has a phosphodiesterase IV inhibitory activity. At least one of the ring (the carbocycle or the heterocycle) bonding at 3-position of the pyrazolonaphthyridine skeleton and the carbocycle bonding at 5-position may have a halogenated alkyl group and/or a halogenated alkoxy group as a substituent. Such a compound or a salt thereof is useful as a phosphodiesterase IV inhibitor and the like. According to the present invention, a novel compound having a high phosphodiesterase IV inhibitory effect can be provided.Type: ApplicationFiled: September 15, 2006Publication date: May 21, 2009Inventors: Hashime Kanazawa, Tomoji Aotsuka, Kentarou Kumazawa, Kouki Ishitani, Takashi Nose
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Publication number: 20070197602Abstract: At least one hyperlipidemic agent selected from the group consisting of a fibrate compound (e.g., fenofibrate, bezafibrate, or a salt thereof) and an HMG-CoA reductase inhibitor (e.g., a statin compound, for example, pravastatin, atorvastatin, or salts thereof) is, as active ingredients, combined with an ?-glucosidase inhibitor (e.g., voglibose, and acarbose) in the pharmaceutical composition of the present invention. The proportion of the ?-glucosidase inhibitor may be about 0.001 to 50 parts by weight relative to 100 parts by weight of the hyperlipidemic agent. The present invention provides a pharmaceutical composition which is excellent in prophylactic and/or therapeutic effect on metabolic syndrome, hyperlipemia, diabetes, diabetes complications, etc, and has few side effects.Type: ApplicationFiled: February 8, 2005Publication date: August 23, 2007Inventors: Hashime Kanazawa, Kouki Ishitani, Katsuichi Sudo, Naoto Tanimori
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Publication number: 20060040972Abstract: The target is to provide PDE IV inhibitors which have a highly potent anti-asthmatic and/or COPD-prophylactic/therapeutic profile with unexpectedly excellent safety.Type: ApplicationFiled: November 5, 2003Publication date: February 23, 2006Inventors: Hashime Kanazawa, Tomoji Aotsuka, Kentarou Kumazawa, Kouki Ishitani, Takashi Nose
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Patent number: 6326360Abstract: An object of the present invention is to obtain an oral glycyrrhizin preparation not only manufacturable by a simple method but also having an excellent property of being absorbed from the digestive tract. In the present invention, such oral preparations are made into enteric forms wherein glycyrrhizin is admixed with an effervescent agent in combination with an absorption enhancer such as a medium-chain fatty acid or a salt thereof. In the preparation of the present invention, it is now possible to achieve an excellent absorption of glycyrrhizin from the digestive tract by addition of an effervescent agent and, moreover, the preparation can be manufactured by a simple, convenient method without special steps.Type: GrantFiled: September 25, 2000Date of Patent: December 4, 2001Assignee: Grelan Pharmaceuticals Co., Ltd.Inventors: Hashime Kanazawa, Kenji Shimizu, Kazuhiro Sasaki, Tetsuya Sugimoto