Patents by Inventor Hiroyuki Ishiwata
Hiroyuki Ishiwata 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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Publication number: 20220162206Abstract: To provide a novel compound or a salt thereof or a solvate thereof, having a CSF-1R inhibitory activity and exhibiting antitumor effect. An azaindole derivative of formula (I): wherein A represents a C6-10 aryl ring, an aromatic heterocycle, or an unsaturated heterocycle, and A optionally has one substituent or more same or different substituents; and R represents a C1-3 alkyl group or a saturated heterocyclic group, or a salt thereof or a solvate thereof.Type: ApplicationFiled: March 30, 2020Publication date: May 26, 2022Applicant: KOWA COMPANY, LTD.Inventors: Gen WATANABE, Toshiharu MORIMOTO, Akira IWATA, Hirotaka SASAKI, Takahisa OGAMINO, Kosuke USUDA, Ayumu OKUDA, Hiroyuki ISHIWATA, Yuichiro TABUNOKI, Keigo NISHII
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Patent number: 9045423Abstract: Disclosed is a compound which has a low molecular weight and has an activity of enhancing the production of EPO and/or an activity of enhancing the production of hemoglobin.Type: GrantFiled: May 12, 2014Date of Patent: June 2, 2015Assignee: KOWA COMPANY, LTD.Inventors: Masanori Ashikawa, Junya Tagashira, Akiyasu Koketsu, Toshiharu Morimoto, Takahiro Kitamura, Syunji Takemura, Gen Watanabe, Tatsuaki Nishiyama, Satoshi Goda, Masaki Yamabi, Takeshi Doi, Hiroyuki Ishiwata
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Patent number: 8921576Abstract: The present invention provides a novel compound represented by a general formula (1) as shown below, which has a glucokinase-activating action in the liver and pancreatic ?-cells and which is useful as an agent for preventing and/or treating diseases caused by hyperglycemia, such as diabetes. A spiroindoline compound represented by the general formula (1), or a salt thereof, or a solvate of the compound or the salt: [wherein ring A represents a nitrogen-containing 5-10 membered heteroaryl group; R1 and R2, which are the same or different, each represent a hydrogen atom, a halogen atom, a halo C1-6 alkyl group, a C6-10 aryl group, a cyano group, a C1-6 alkyl group optionally having a substituent, a C2-6 alkenyl group optionally having a substituent, etc.; R3 represents a hydrogen atom, a C1-6 alkyl group optionally having a substituent, etc.; and R4 represents a hydrogen atom, a halogen atom, a C1-6 alkyl group optionally having a substituent, etc.Type: GrantFiled: October 18, 2012Date of Patent: December 30, 2014Assignee: Kowa Company, Ltd.Inventors: Takahisa Ogamino, Yukiyoshi Yamazaki, Shin Tanikawa, Ayumu Okuda, Tomoaki Fukuda, Okihisa Tokuda, Yoshiharu Miyake, Shinsuke Itoh, Hiroyuki Ishiwata
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Publication number: 20140309207Abstract: The present invention provides a novel compound represented by a general formula (1) as shown below, which has a glucokinase-activating action in the liver and pancreatic ?-cells and which is useful as an agent for preventing and/or treating diseases caused by hyperglycemia, such as diabetes. A spiroindoline compound represented by the general formula (1), or a salt thereof, or a solvate of the compound or the salt: [wherein ring A represents a nitrogen-containing 5-10 membered heteroaryl group; R1 and R2, which are the same or different, each represent a hydrogen atom, a halogen atom, a halo C1-6 alkyl group, a C6-10 aryl group, a cyano group, a C1-6 alkyl group optionally having a substituent, a C2-6 alkenyl group optionally having a substituent, etc.; R3 represents a hydrogen atom, a C1-6 alkyl group optionally having a substituent, etc.; and R4 represents a hydrogen atom, a halogen atom, a C1-6 alkyl group optionally having a substituent, etc.Type: ApplicationFiled: October 18, 2012Publication date: October 16, 2014Inventors: Takahisa Ogamino, Yukiyoshi Yamazaki, Shin Tanikawa, Ayumu Okuda, Tomoaki Fukuda, Okihisa Tokuda, Yoshiharu Miyake, Shinsuke Itoh, Hiroyuki Ishiwata
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Publication number: 20140249144Abstract: Disclosed is a compound which has a low molecular weight and has an activity of enhancing the production of EPO and/or an activity of enhancing the production of hemoglobin.Type: ApplicationFiled: May 12, 2014Publication date: September 4, 2014Applicant: KOWA COMPANY, LTD.Inventors: Masanori Ashikawa, Junya Tagashira, Akiyasu Koketsu, Toshiharu Morimoto, Takahiro Kitamura, Syunji Takemura, Gen Watanabe, Tatsuaki Nishiyama, Satoshi Goda, Masaki Yamabi, Takeshi Doi, Hiroyuki Ishiwata
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Patent number: 8791090Abstract: Disclosed is a compound which has a low molecular weight and has an activity of enhancing the production of EPO and/or an activity of enhancing the production of hemoglobin.Type: GrantFiled: March 31, 2010Date of Patent: July 29, 2014Assignee: Kowa Company, Ltd.Inventors: Masanori Ashikawa, Junya Tagashira, Akiyasu Koketsu, Toshiharu Morimoto, Takahiro Kitamura, Syunji Takemura, Gen Watanabe, Tatsuaki Nishiyama, Satoshi Goda, Masaki Yamabi, Takeshi Doi, Hiroyuki Ishiwata
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Patent number: 8604030Abstract: The present invention provides a low molecular weight compound having EPO production-promoting action and/or hemoglobin production-promoting action. The present invention relates to a fused piperidine compound represented by the following general formula (1): (wherein, ring A represents a C10-14 aryl group or 5- to 10-membered heterocyclic group, X represents N—R7, a sulfur atom or an oxygen atom, R1, R2, R2?, R3 and R3? independently represent a hydrogen atom, C1-6 alkyl group or C3-6 cycloalkyl group, and R4, R5 and R6 independently represent a hydrogen atom or halogen atom), or a salt thereof, or a solvate thereof.Type: GrantFiled: March 25, 2010Date of Patent: December 10, 2013Assignee: Kowa Company, Ltd.Inventors: Masanori Ashikawa, Toshiharu Morimoto, Hajime Yamada, Shunji Takemura, Tatsuaki Nishiyama, Takeshi Doi, Hiroyuki Ishiwata
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Patent number: 8575153Abstract: To provide a novel JAK3 inhibitor that is useful as a preventive and/or therapeutic agent for rejection and graft versus host disease (GvHD) in organ transplantation, rheumatoid arthritis, multiple sclerosis, systemic lupus erythematosus, Sjögren syndrome, Behcet's disease, type I diabetes mellitus, autoimmune thyroiditis, idiopathic thrombocytopenic purpura, ulcerative colitis, Crohn's disease, asthma, allergic rhinitis, atopic dermatitis, contact dermatitis, urticaria, eczema, psoriasis, allergic conjunctivitis, uveitis, cancer, leukemia and the like. The pyridine-3-carboxyamide derivative represented by the general formula (1): or its salt or a solvate thereof.Type: GrantFiled: November 27, 2009Date of Patent: November 5, 2013Assignee: Kowa Company, Ltd.Inventors: Takahiro Kitamura, Hajime Yamada, Shunji Takemura, Masanori Ashikawa, Tetsuya Ishikawa, Yoshiharu Miyake, Akiyasu Kouketsu, Seiichi Sato, Hiroyuki Ishiwata, Yuichiro Tabunoki, Manabu Shibasaki, Takatoshi Ozawa, Ryota Shigemi, Takeshi Doi, Masahiro Tamura
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Patent number: 8268789Abstract: Compounds represented by the general formula (1) or salts thereof or solvates of both; PAR-2 antagonists containing the compounds; and preventive or therapeutic agents for PAR-2 related diseases containing the antagonists as the active ingredient: (1) wherein R1 is hydrogen, halogeno, or a group represented by the general formula (2): (wherein R11 is straight-chain or branched C1-6 alkylene or the like; and R12 and R13 together with the nitrogen atom adjacent to them form a 5- to 7-membered ring); R2 is straight-chain or branched C1-6 alkyl or the like; R3 and R4 are each independently hydrogen, one to three halogen atoms, or the like; and A1-A2-A3 is a tripeptide residue composed of ?-amino acids each independently selected from the group consisting of glycine, alanine, cyclohexylalanine, and so on.Type: GrantFiled: September 30, 2005Date of Patent: September 18, 2012Assignee: Kowa Company, Ltd.Inventors: Mototsugu Kabeya, Kyoko Yasuoka, Toru Kanke, Hiroyuki Ishiwata, Junya Tagashira
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Publication number: 20120108581Abstract: The present invention provides a low molecular weight compound having EPO production-promoting action and/or hemoglobin production-promoting action. The present invention relates to a fused piperidine compound represented by the following general formula (1): (wherein, ring A represents a C10-14 aryl group or 5- to 10-membered heterocyclic group, X represents N—R7, a sulfur atom or an oxygen atom, R1, R2, R2?, R3 and R3? independently represent a hydrogen atom, C1-6 alkyl group or C3-6 cycloalkyl group, and R4, R5 and R6 independently represent a hydrogen atom or halogen atom), or a salt thereof, or a solvate thereof.Type: ApplicationFiled: March 25, 2010Publication date: May 3, 2012Applicant: Kowa Company, LtdInventors: Masanori Ashikawa, Toshiharu Morimoto, Hajime Yamada, Shunji Takemura, Tatsuaki Nishiyama, Takeshi Doi, Hiroyuki Ishiwata
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Patent number: 8133864Abstract: The present invention relates to a pharmaceutical composition for preventing/treating conditions associated with PAR-2. The present invention also relates to a method for preventing/treating the condition using the pharmaceutical composition and use for manufacturing the pharmaceutical composition.Type: GrantFiled: March 29, 2006Date of Patent: March 13, 2012Assignee: Kowa Company, Ltd.Inventors: Hiroyuki Ishiwata, Mototsugu Kabeya, Toru Kanke
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Publication number: 20120004197Abstract: Disclosed is a compound which has a low molecular weight and has an activity of enhancing the production of EPO and/or an activity of enhancing the production of hemoglobin.Type: ApplicationFiled: March 31, 2010Publication date: January 5, 2012Applicant: KOWA COMPANY, LTD.Inventors: Masanori Ashikawa, Junya Tagashira, Akiyasu Koketsu, Toshiharu Morimoto, Takahiro Kitamura, Syunji Takemura, Gen Watanabe, Tatsuaki Nishiyama, Satoshi Goda, Masaki Yamabi, Takeshi Doi, Hiroyuki Ishiwata
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Publication number: 20110237590Abstract: To provide a novel JAK3 inhibitor that is useful as a preventive and/or therapeutic agent for rejection and graft versus host disease (GvHD) in organ transplantation, rheumatoid arthritis, multiple sclerosis, systemic lupus erythematosus, Sjögren syndrome, Behcet's disease, type I diabetes mellitus, autoimmune thyroiditis, idiopathic thrombocytopenic purpura, ulcerative colitis, Crohn's disease, asthma, allergic rhinitis, atopic dermatitis, contact dermatitis, urticaria, eczema, psoriasis, allergic conjunctivitis, uveitis, cancer, leukemia and the like. The pyridine-3-carboxyamide derivative represented by the general formula (1): or its salt or a solvate thereof.Type: ApplicationFiled: November 27, 2009Publication date: September 29, 2011Inventors: Takahiro Kitamura, Hajime Yamada, Shunji Takemura, Masanori Ashikawa, Tetsuya Ishikawa, Yoshiharu Miyake, Akiyasu Kouketsu, Seiichi Sato, Hiroyuki Ishiwata, Yuichiro Tabunoki, Manabu Shibasaki, Takatoshi Ozawa, Ryota Shigemi, Takeshi Doi, Masahiro Tamura
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Patent number: 7910556Abstract: A compound, or a salt or solvate thereof having a structure of Ar—CO-AA1-AA2-AA3-AA4-NH—X—NR1R2 is disclosed. Ar represents an optionally substituted phenyl group or an aromatic heterocyclic group; AA1 represents a hydrophobic amino acid; AA2 represents an unsubstituted amino acid containing 2 or more carbon atoms; AA3 represents an unsubstituted amino acid containing 2 or more carbon atoms; AA4 represents a hydrophobic amino acid; X represents a divalent saturated aliphatic hydrocarbon group having 2-6 carbon atoms; and R1 and R2 represent a saturated or unsubstituted aliphatic hydrocarbon group having 1-8 carbon atoms, or alternatively R1 and R2 may form a ring together with an adjacent nitrogen atom. A pharmaceutical composition for prevention/treatment of diseases associated with PAR-2 is also disclosed. The pharmaceutical composition includes the above compound, a salt or a solvate thereof and a pharmaceutically acceptable carrier.Type: GrantFiled: December 27, 2005Date of Patent: March 22, 2011Assignee: Kowa Company, Ltd.Inventors: Hiroyuki Ishiwata, Mototsugu Kabeya, Toru Kanke
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Publication number: 20110064403Abstract: A dome-shaped camera includes a casing having an axis. A camera unit is supported on the casing. A dome-shaped cover is at least partly transparent, and covers the camera unit. A flange portion has a first contact portion and a second contact portion. The first contact portion is in contact with an end of the dome-shaped cover. The second contact portion is in contact with the casing. A position of the first contact portion in a radial direction with respect to the axis of the casing differs from that of the second contact portion. The flange portion is fixed to the casing.Type: ApplicationFiled: September 8, 2010Publication date: March 17, 2011Applicant: Victor Company of Japan, Ltd.Inventors: Yoichi Nakano, Hiroyuki Ishiwata
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Publication number: 20100222347Abstract: Disclosed is a low-molecular-weight compound having an EPO production-promoting activity and/or a hemoglobin expression-enhancing activity. Specifically disclosed is an EPO production promoter and/or a hemoglobin expression enhancer comprising a 1-acyl-4-(phenoxy, benzyloxy or phenylamino)-1,2,3,4-tetrahydroquinoline derivative, more specifically a tetrahydroquinoline compound represented by the general formula (1); [wherein R1, R2, R2?, R3 and R3? independently represent a hydrogen atom, a C1-6 alkyl group, or the like; R4, R5, R6, R7, R8, R9 and R10 independently represent a hydrogen atom, a halogen atom, a C1-6 alkyl group, or the like; A represents N—R11 or an oxygen atom; R11 represents a hydrogen atom, a C1-6 alkyl group, or the like; and n represents an integer of 0 or 1], a salt of the tetrahydroquinoline compound, or a solvate of the tetrahydroquinoline compound or the salt.Type: ApplicationFiled: September 29, 2008Publication date: September 2, 2010Applicant: KOWA COMPANY, LTD.Inventors: Masanori Ashikawa, Junya Tagashira, Akiyasu Koketsu, Toshiharu Morimoto, Tatsuaki Nishiyama, Satoshi Goda, Masaki Yamabi, Takeshi Doi, Hiroyuki Ishiwata
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Publication number: 20090215703Abstract: The present invention relates to a pharmaceutical composition for preventing/treating conditions associated with PAR-2. The present invention also relates to a method for preventing/treating the condition using the pharmaceutical composition and use for manufacturing the pharmaceutical composition.Type: ApplicationFiled: March 29, 2006Publication date: August 27, 2009Applicant: KOWA COMPANY, LTD.Inventors: Hiroyuki Ishiwata, Mototsugu Kabeya, Toru Kanke
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Publication number: 20090131330Abstract: Disclosed is a compound represented by the following general formula (1): Ar—CO-AA1-AA2-AA3-AA4-NH—X—NR1R2 (1) (wherein Ar represents an optionally substituted phenyl group or an aromatic heterocyclic group; AA1 represents a hydrophobic amino acid; AA2 represents an unsubstituted amino acid containing 2 or more carbon atoms; AA3 represents an unsubstituted amino acid containing 2 or more carbon atoms; AA4 represents a hydrophobic amino acid; X represents a divalent saturated aliphatic hydrocarbon group having 2-6 carbon atoms; and R1 and R2 may be the same or different and independently represent a saturated or unsubstituted aliphatic hydrocarbon group having 1-8 carbon atoms, or alternatively R1 and R2 may form a ring together with an adjacent nitrogen atom), a salt thereof, or a solvate of them.Type: ApplicationFiled: December 27, 2005Publication date: May 21, 2009Applicant: KOWA CO., LTD.Inventors: Hiroyuki Ishiwata, Mototsugu Kabeya, Toru Kanke
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Patent number: 7496332Abstract: A diplexer contains a common terminal connected to an antenna, a first input/output terminal for inputting/outputting signals of a plurality of high frequency bands higher than a predetermined frequency, and a second input/output terminal for inputting/outputting signals of low frequency bands lower than the predetermined frequency. Between the common terminal and the first input/output terminal, a high pass filter and low trap circuits for attenuating the low frequency bands respectively are interposed in series, and, between the common terminal and the second input/output terminal, a low pass filter and high trap circuits for attenuating the high frequency bands respectively are interposed in series.Type: GrantFiled: February 17, 2005Date of Patent: February 24, 2009Assignee: Alps Electric Co., Ltd.Inventors: Hiroyuki Ishiwata, Takashi Tanemura, Akiyuki Yoshisato, Masami Miyazaki
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Publication number: 20090012006Abstract: Compounds represented by the general formula (1) or salts thereof or solvates of both; PAR-2 antagonists containing the compounds; and preventive or therapeutic agents for PAR-2 related diseases containing the antagonists as the active ingredient: (1) wherein R1 is hydrogen, halogeno, or a group represented by the general formula (2): (wherein R11 is straight-chain or branched C1-6 alkylene or the like; and R12 and R13 together with the nitrogen atom adjacent to them form a 5- to 7-membered ring); R2 is straight-chain or branched C1-6 alkyl or the like; R3 and R4 are each independently hydrogen, one to three halogen atoms, or the like; and A1-A2-A3 is a tripeptide residue composed of ?-amino acids each independently selected from the group consisting of glycine, alanine, cyclohexylalanine, and so on.Type: ApplicationFiled: September 30, 2005Publication date: January 8, 2009Applicant: KOWA COMPANY, LTD.Inventors: Mototsugu Kabeya, Kyoko Yasuoka, Toru Kanke, Hiroyuki Ishiwata, Junya Tagashira