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).

  • Publication number: 20220162206
    Abstract: 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: Application
    Filed: March 30, 2020
    Publication date: May 26, 2022
    Applicant: KOWA COMPANY, LTD.
    Inventors: Gen WATANABE, Toshiharu MORIMOTO, Akira IWATA, Hirotaka SASAKI, Takahisa OGAMINO, Kosuke USUDA, Ayumu OKUDA, Hiroyuki ISHIWATA, Yuichiro TABUNOKI, Keigo NISHII
  • Patent number: 9045423
    Abstract: 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: Grant
    Filed: May 12, 2014
    Date of Patent: June 2, 2015
    Assignee: 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
  • Patent number: 8921576
    Abstract: 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: Grant
    Filed: October 18, 2012
    Date of Patent: December 30, 2014
    Assignee: Kowa Company, Ltd.
    Inventors: Takahisa Ogamino, Yukiyoshi Yamazaki, Shin Tanikawa, Ayumu Okuda, Tomoaki Fukuda, Okihisa Tokuda, Yoshiharu Miyake, Shinsuke Itoh, Hiroyuki Ishiwata
  • Publication number: 20140309207
    Abstract: 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: Application
    Filed: October 18, 2012
    Publication date: October 16, 2014
    Inventors: Takahisa Ogamino, Yukiyoshi Yamazaki, Shin Tanikawa, Ayumu Okuda, Tomoaki Fukuda, Okihisa Tokuda, Yoshiharu Miyake, Shinsuke Itoh, Hiroyuki Ishiwata
  • Publication number: 20140249144
    Abstract: 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: Application
    Filed: May 12, 2014
    Publication date: September 4, 2014
    Applicant: 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
  • Patent number: 8791090
    Abstract: 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: Grant
    Filed: March 31, 2010
    Date of Patent: July 29, 2014
    Assignee: 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
  • Patent number: 8604030
    Abstract: 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: Grant
    Filed: March 25, 2010
    Date of Patent: December 10, 2013
    Assignee: Kowa Company, Ltd.
    Inventors: Masanori Ashikawa, Toshiharu Morimoto, Hajime Yamada, Shunji Takemura, Tatsuaki Nishiyama, Takeshi Doi, Hiroyuki Ishiwata
  • Patent number: 8575153
    Abstract: 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: Grant
    Filed: November 27, 2009
    Date of Patent: November 5, 2013
    Assignee: 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
  • Patent number: 8268789
    Abstract: 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: Grant
    Filed: September 30, 2005
    Date of Patent: September 18, 2012
    Assignee: Kowa Company, Ltd.
    Inventors: Mototsugu Kabeya, Kyoko Yasuoka, Toru Kanke, Hiroyuki Ishiwata, Junya Tagashira
  • Publication number: 20120108581
    Abstract: 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: Application
    Filed: March 25, 2010
    Publication date: May 3, 2012
    Applicant: Kowa Company, Ltd
    Inventors: Masanori Ashikawa, Toshiharu Morimoto, Hajime Yamada, Shunji Takemura, Tatsuaki Nishiyama, Takeshi Doi, Hiroyuki Ishiwata
  • Patent number: 8133864
    Abstract: 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: Grant
    Filed: March 29, 2006
    Date of Patent: March 13, 2012
    Assignee: Kowa Company, Ltd.
    Inventors: Hiroyuki Ishiwata, Mototsugu Kabeya, Toru Kanke
  • Publication number: 20120004197
    Abstract: 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: Application
    Filed: March 31, 2010
    Publication date: January 5, 2012
    Applicant: 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
  • Publication number: 20110237590
    Abstract: 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: Application
    Filed: November 27, 2009
    Publication date: September 29, 2011
    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
  • Patent number: 7910556
    Abstract: 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: Grant
    Filed: December 27, 2005
    Date of Patent: March 22, 2011
    Assignee: Kowa Company, Ltd.
    Inventors: Hiroyuki Ishiwata, Mototsugu Kabeya, Toru Kanke
  • Publication number: 20110064403
    Abstract: 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: Application
    Filed: September 8, 2010
    Publication date: March 17, 2011
    Applicant: Victor Company of Japan, Ltd.
    Inventors: Yoichi Nakano, Hiroyuki Ishiwata
  • Publication number: 20100222347
    Abstract: 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: Application
    Filed: September 29, 2008
    Publication date: September 2, 2010
    Applicant: KOWA COMPANY, LTD.
    Inventors: Masanori Ashikawa, Junya Tagashira, Akiyasu Koketsu, Toshiharu Morimoto, Tatsuaki Nishiyama, Satoshi Goda, Masaki Yamabi, Takeshi Doi, Hiroyuki Ishiwata
  • Publication number: 20090215703
    Abstract: 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: Application
    Filed: March 29, 2006
    Publication date: August 27, 2009
    Applicant: KOWA COMPANY, LTD.
    Inventors: Hiroyuki Ishiwata, Mototsugu Kabeya, Toru Kanke
  • Publication number: 20090131330
    Abstract: 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: Application
    Filed: December 27, 2005
    Publication date: May 21, 2009
    Applicant: KOWA CO., LTD.
    Inventors: Hiroyuki Ishiwata, Mototsugu Kabeya, Toru Kanke
  • Patent number: 7496332
    Abstract: 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: Grant
    Filed: February 17, 2005
    Date of Patent: February 24, 2009
    Assignee: Alps Electric Co., Ltd.
    Inventors: Hiroyuki Ishiwata, Takashi Tanemura, Akiyuki Yoshisato, Masami Miyazaki
  • Publication number: 20090012006
    Abstract: 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: Application
    Filed: September 30, 2005
    Publication date: January 8, 2009
    Applicant: KOWA COMPANY, LTD.
    Inventors: Mototsugu Kabeya, Kyoko Yasuoka, Toru Kanke, Hiroyuki Ishiwata, Junya Tagashira