Patents by Inventor Shiho Ishikawa

Shiho Ishikawa 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).

  • Patent number: 8314094
    Abstract: [PROBLEMS] To provide a compound useful as an agent for the treatment of circulatory diseases, nervous system diseases, metabolic diseases, reproductive system diseases, and digestive tract diseases. [MEANS FOR SOLVING PROBLEMS] The compound, which is for use as an active ingredient, is represented by the formula (I): [wherein R1 represents optionally halogenated C1-6 alkyl, etc.; R2 represents, e.g., a group represented by the formula (II-1) or (II-4) (wherein W represents C1-6 alkylene, etc. and R represents C1-6 alkyl, etc.); R3 represents hydrogen, C1-6 alkyl, etc.; X represents —O—, —NH—, etc.; and Y1, Y2, Y3, and Y4 each independently represents —CH—, —N—, etc.].
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: November 20, 2012
    Assignee: MSD K.K
    Inventors: Shiho Ishikawa, Takashi Mizutani, Tsuyoshi Nagase, Nagaaki Sato, Hidekazu Takahashi
  • Patent number: 8138206
    Abstract: Disclosed is a substance having an antagonistic effect on the binding of histamine to a histamine H3 receptor or an inhibitory effect on the activity which a histamine H3 receptor constantly exhibits. A compound represented by the formula (I) or a pharmaceutically acceptable salt thereof; (I) wherein R1 represents a phenyl group which may be substituted or the like and R2 represents a cyano group which may be substituted or the like, or R1 and R2 together form an aliphatic heterocylic ring which may be substituted; R3 represents a group represented by the formula (II-1) below; and all of X1 to X4 represent a carbon atom or the like: (II-1) where R4 and R5 represent a lower alkyl group or the like; and m1 represents an integer of 2 to 4.
    Type: Grant
    Filed: May 29, 2006
    Date of Patent: March 20, 2012
    Assignee: MSD. K.K.
    Inventors: Shiho Ishikawa, Tsuyoshi Nagase, Nagaaki Sato, Hidekazu Takahashi, Shigeru Tokita, Toshihiro Wada
  • Publication number: 20100210636
    Abstract: [PROBLEMS] To provide a compound useful as an agent for the treatment of circulatory diseases, nervous system diseases, metabolic diseases, reproductive system diseases, and digestive tract diseases. [MEANS FOR SOLVING PROBLEMS] The compound, which is for use as an active ingredient, is represented by the formula (I): [wherein R1 represents optionally halogenated C1-6 alkyl, etc.; R2 represents, e.g., a group represented by the formula (II-1) or (II-4) (wherein W represents C1-6 alkylene, etc. and R represents C1-6 alkyl, etc.); R3 represents hydrogen, C1-6 alkyl, etc.; X represents —O—, —NH—, etc.; and Y1, Y2, Y3, and Y4 each independently represents —CH—, —N—, etc.].
    Type: Application
    Filed: October 2, 2008
    Publication date: August 19, 2010
    Inventors: Shiho Ishikawa, Takashi Mizutani, Tsuyoshi Nagase, Nagaaki Sato, Hidekazu Takahashi
  • Publication number: 20090137576
    Abstract: Disclosed is a substance having an antagonistic effect on the binding of histamine to a histamine H3 receptor or an inhibitory effect on the activity which a histamine H3 receptor constantly exhibits. A compound represented by the formula (I) or a pharmaceutically acceptable salt thereof; (I) wherein R1 represents a phenyl group which may be substituted or the like and R2 represents a cyano group which may be substituted or the like, or R1 and R2 together form an aliphatic heterocylic ring which may be substituted; R3 represents a group represented by the formula (II-1) below; and all of X1 to X4 represent a carbon atom or the like: (II-1) where R4 and R5 represent a lower alkyl group or the like; and m1 represents an integer of 2 to 4.
    Type: Application
    Filed: May 29, 2006
    Publication date: May 28, 2009
    Inventors: Shiho Ishikawa, Tsuyoshi Nagase, Nagaaki Sato, Hidekazu Takahashi, Shigeru Tokita, Toshihiro Wada
  • Patent number: 7138525
    Abstract: A compound of the formula (I): (wherein Ar1 and Ar2 are independently aryl or heteroaryl, any of which is optionally substituted by a substituent selected from the group consisting of cyano, halogen, nitro, lower alkyl, halo-lower alkyl, hydroxy-lower alkyl, cyclo-lower alkyl, cyclo(lower alkyl)-lower alkyl, lower alkenyl, lower alkylamino, di-lower alkylamino, lower alkanoylamino, lower alkylsulfonylamino, arylsulfonylamino, hydroxy, lower alkoxy, halo-lower alkoxy, aryloxy, heteroaryloxy, lower alkylthio, carboxyl, formyl, lower alkanoyl, lower alkoxycarbonyl, carbamoyl, lower alkylcarbamoyl, di-lower alkylcarbamoyl, lower alkylsulfonyl, arylsulfonyl, aryl and heteroaryl; R1 and R2 are independently lower alkyl, cyclo-lower alkyl, cyclo(lower alkyl)-lower alkyl or lower alkoxy, any of which is optionally substituted by a substituent selected from the group consisting of halogen, lower alkylamino, di-lower alkylamino, lower alkanoylamino, hydroxy, lower alkoxy, formyl, lower alkoxycarbonyl, lower alky
    Type: Grant
    Filed: July 27, 2004
    Date of Patent: November 21, 2006
    Assignee: Banyu Pharmaceutical Co., Ltd.
    Inventors: Nagaaki Sato, Makoto Ando, Shiho Ishikawa, Tsuyoshi Nagase, Keita Nagai, Akio Kanatani
  • Patent number: 6869966
    Abstract: A compound of the formula (I): (wherein Ar1 and Ar2 are independently aryl or heteroaryl, any of which is optionally substituted by a substituent selected from the group consisting of cyano, halogen, nitro, lower alkyl, halo-lower alkyl, hydroxy-lower alkyl, cyclo-lower alkyl, cyclo(lower alkyl)-lower alkyl, lower alkenyl, lower alkylamino, di-lower alkylamino, lower alkanoylamino, lower alkylsulfonylamino, arylsulfonylamino, hydroxy, lower alkoxy, halo-lower alkoxy, aryloxy, heteroaryloxy, lower alkylthio, carboxyl, formyl, lower alkanoyl, lower alkoxycarbonyl, carbamoyl, lower alkylcarbamoyl, di-lower alkylcarbamoyl, lower alkylsulfonyl, arylsulfonyl, aryl and heteroaryl; R1 and R2 are independently lower alkyl, cyclo-lower alkyl, cyclo(lower alkyl)-lower alkyl or lower alkoxy, any of which is optionally substituted by a substituent selected from the group consisting of halogen, lower alkylamino, di-lower alkylamino, lower alkanoylamino, hydroxy, lower alkoxy, formyl, lower alkoxycarbonyl, lower alkylc
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: March 22, 2005
    Assignee: Banyu Pharmaceutical Co., Ltd.
    Inventors: Nagaaki Sato, Makoto Ando, Shiho Ishikawa, Tsuyoshi Nagase, Keita Nagai, Akio Kanatani
  • Publication number: 20050009879
    Abstract: A compound of the formula (I): (wherein Ar1 and Ar2 are independently aryl or heteroaryl, any of which is optionally substituted by a substituent selected from the group consisting of cyano, halogen, nitro, lower alkyl, halo-lower alkyl, hydroxy-lower alkyl, cyclo-lower alkyl, cyclo(lower alkyl)-lower alkyl, lower alkenyl, lower alkylamino, di-lower alkylamino, lower alkanoylamino, lower alkylsulfonylamino, arylsulfonylamino, hydroxy, lower alkoxy, halo-lower alkoxy, aryloxy, heteroaryloxy, lower alkylthio, carboxyl, formyl, lower alkanoyl, lower alkoxycarbonyl, carbamoyl, lower alkylcarbamoyl, di-lower alkylcarbamoyl, lower alkylsulfonyl, arylsulfonyl, aryl and heteroaryl; R1 and R2 are independently lower alkyl, cyclo-lower alkyl, cyclo(lower alkyl)-lower alkyl or lower alkoxy, any of which is optionally substituted by a substituent selected from the group consisting of halogen, lower alkylamino, di-lower alkylamino, lower alkanoylamino, hydroxy, lower alkoxy, formyl, lower alkoxycarbonyl, lower alk
    Type: Application
    Filed: July 27, 2004
    Publication date: January 13, 2005
    Inventors: Nagaaki Sato, Makoto Ando, Shiho Ishikawa, Tsuyoshi Nagase, Keita Nagai, Akio Kanatani
  • Publication number: 20040072874
    Abstract: A compound of the formula (I): 1
    Type: Application
    Filed: August 15, 2003
    Publication date: April 15, 2004
    Inventors: Nagaaki Sato, Makoto Ando, Shiho Ishikawa, Tsuyoshi Nagase, Keita Nagai, Akio Kanatani