Patents by Inventor Hiroya Satoh

Hiroya Satoh 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: 9920005
    Abstract: A method for highly efficiently preparing high purity crystals of 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chloro-phenyl]-ethyl]-1,3-propanediol hydrochloride. The method involves dissolving 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]ethyl]-1,3-propanediol in a mixed solvent comprising a solvent in which its hydrochloride is highly soluble and a solvent in which its hydrochloride is less soluble, to prepare a solution of 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]ethyl]-1,3-propanediol; and then adding hydrochloric acid to the resulting solution with stirring, to crystallize the hydrochloride of 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chloro-phenyl]ethyl]-1,3-propanediol.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: March 20, 2018
    Assignee: KYORIN PHARMACEUTICAL CO., LTD.
    Inventors: Hidetaka Komatsu, Hiroya Satoh
  • Publication number: 20170015624
    Abstract: A method for highly efficiently preparing high purity crystals of 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chloro-phenyl]-ethyl]-1,3-propanediol hydrochloride. The method involves dissolving 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]ethyl]-1,3-propanediol in a mixed solvent comprising a solvent in which its hydrochloride is highly soluble and a solvent in which its hydrochloride is less soluble, to prepare a solution of 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]ethyl]-1,3-propanediol; and then adding hydrochloric acid to the resulting solution with stirring, to crystallize the hydrochloride of 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chloro-phenyl]ethyl]-1,3-propanediol.
    Type: Application
    Filed: September 30, 2016
    Publication date: January 19, 2017
    Applicant: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Hidetaka KOMATSU, Hiroya SATOH
  • Patent number: 9493410
    Abstract: A method for highly efficiently preparing high purity crystals of 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chloro-phenyl]-ethyl]-1,3-propanediol hydrochloride. The method involves dissolving 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]ethyl]-1,3-propanediol in a mixed solvent comprising a solvent in which its hydrochloride is highly soluble and a solvent in which its hydrochloride is less soluble, to prepare a solution of 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]ethyl]-1,3-propanediol; and then adding hydrochloric acid to the resulting solution with stirring, to crystallize the hydrochloride of 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chloro-phenyl]ethyl]-1,3-propanediol.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: November 15, 2016
    Assignee: KYORIN PHARMACEUTICAL CO., LTD.
    Inventors: Hidetaka Komatsu, Hiroya Satoh
  • Publication number: 20110021636
    Abstract: A method for highly efficiently preparing high purity crystals of 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chloro-phenyl]-ethyl]-1,3-propanediol hydrochloride. The method involves dissolving 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]ethyl]-1,3-propanediol in a mixed solvent comprising a solvent in which its hydrochloride is highly soluble and a solvent in which its hydrochloride is less soluble, to prepare a solution of 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chlorophenyl]ethyl]-1,3-propanediol; and then adding hydrochloric acid to the resulting solution with stirring, to crystallize the hydrochloride of 2-amino-2-[2-[4-(3-benzyloxyphenylthio)-2-chloro-phenyl]ethyl]-1,3-propanediol.
    Type: Application
    Filed: March 18, 2009
    Publication date: January 27, 2011
    Applicant: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Hidetaka Komatsu, Hiroya Satoh
  • Patent number: 6706763
    Abstract: O-anisamide compounds and their addition salts effective for the prevention and/or therapy of metabolic diseases such as hyperlipidemia and diabetes, in which peroxisome proliferator-activated receptor (PPAR) being intranuclear receptor, in particular, human PPAR participates, as agonistic drugs thereon, and processes for preparing them, wherein the o-anisamide compounds are represented by a general formula (1) [wherein R denotes a carboxyl group, carboxymethyl group or CH2CHXCOY (here X denotes a mercapto group or S(O)nMe (n=0, 1 or 2) and Y denotes an amino group or hydroxyl group)], their medicinally acceptable salts, and their hydrates.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: March 16, 2004
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Hiroya Satoh, Masakatsu Komuro, Koji Murakami, Katsuya Awano
  • Patent number: 6147101
    Abstract: The present invention provides novel N-benzyldioxothiazolidylbenzamide derivatives that improve the insulin resistance and have potent hypoglycemic and lipid-lowering effects and processes for preparing the same, and relates to N-benzyldioxothiazolidylbenzamide derivatives characterized by being represented by a general formula (1) ##STR1## [wherein R.sup.1 and R.sup.2 denote identically or differently hydrogen atoms, lower alkyl groups with carbon atoms of 1 to 4, lower alkoxy groups with carbon atoms of 1 to 3, lower haloalkyl groups with carbon atoms of 1 to 3, lower haloalkoxy groups with carbon atoms of 1 to 3, halogen atoms, hydroxyl groups, nitro groups, amino groups which may be substituted with lower alkyl group(s) with carbon atoms of 1 to 3 or hetero rings, or R.sup.1 and R.sup.2 link to form a methylenedioxy group, R.sup.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: November 14, 2000
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Toshio Maeda, Masahiro Nomura, Katsuya Awano, Susumu Kinoshita, Hiroya Satoh, Koji Murakami, Masaki Tsunoda
  • Patent number: 6030990
    Abstract: The present invention provides novel N-benzyldioxothiazolidylbenzamide derivatives that improve the insulin resistance and have potent hypoglycemic and lipid-lowering effects and processes for preparing the same, and relates to N-benzyldioxothiazolidylbenzamide derivatives characterized by being represented by a general formula (1) ##STR1## wherein R.sup.1 and R.sup.2 denote identically or differently hydrogen atoms, lower alkyl groups with carbon atoms of 1 to 4, lower alkoxy groups with carbon atoms of 1 to 3, lower haloalkyl groups with carbon atoms of 1 to 3, lower haloalkoxy groups with carbon atoms of 1 to 3, halogen atoms, hydroxyl groups, nitro groups, amino groups which may be substituted with lower alkyl group(s) with carbon atoms of 1 to 3 or hetero rings, or R.sup.1 and R.sup.2 link to form a methylenedioxy group, R.sup.
    Type: Grant
    Filed: December 2, 1997
    Date of Patent: February 29, 2000
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Toshio Maeda, Masahiro Nomura, Katsuya Awano, Susumu Kinoshita, Hiroya Satoh, Koji Murakami, Masaki Tsunoda
  • Patent number: 6001862
    Abstract: The present invention provides novel N-benzyldioxothiazolidylbenzamide derivatives that improve the insulin resistance and have potent hypoglycemic and lipid-lowering effects and processes for preparing the same, and relates to N-benzyldioxothiazolidylbenzamide derivatives characterized by being represented by a general formula (1) ##STR1## [wherein R.sup.1 and R.sup.2 denote identically or differently hydrogen atoms, lower alkyl groups with carbon atoms of 1 to 4, lower alkoxy groups with carbon atoms of 1 to 3, lower haloalkyl groups with carbon atoms of 1 to 3, lower haloalkoxy groups with carbon atoms of 1 to 3, halogen atoms, hydroxyl groups, nitro groups, amino groups which may be substituted with lower alkyl group(s) with carbon atoms of 1 to 3 or hetero rings, or R.sup.1 and R.sup.2 link to form a methylenedioxy group, R.sup.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: December 14, 1999
    Assignee: Kyorin Pharameuticals Co., Ltd.
    Inventors: Toshio Maeda, Masahiro Nomura, Katsuya Awano, Susumu Kinoshita, Hiroya Satoh, Koji Murakami, Masaki Tsunoda
  • Patent number: 5948803
    Abstract: The invention provides novel N-substituted dioxothiazolidylbenzamide derivatives that improve the insulin resistance and have potent hypoglycemic effect and lipid-lowering effect, and the process for preparing them, and relates to N-substituted dioxothiazolidylbenzamide derivatives characterized by being represented by a general formula (1) ##STR1## ?wherein R.sup.1 and R.sup.2 denote identically or differently hydrogen atoms, lower alkyl groups with carbon atoms of 1 to 4, lower alkoxy groups with carbon atoms of 1 to 3, lower haloalkyl groups with carbon atoms of 1 to 3, lower haloalkoxy groups with carbon atoms of 1 to 3, halogen atoms or hydroxyl groups, or R.sup.1 and R.sup.2 combine to form a methylenedioxy group, R.sup.3 denotes a hydrogen atom, lower alkoxys group with carbon atoms of 1 to 3, hydroxyl group or halogen atom, R.sup.4 denotes a hydrogen or lower alkyl group with carbon atoms of 1 to 3, n denotes an integer of 0 to 2, and X denotes N or CH!, and process for preparing the same.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: September 7, 1999
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Toshio Maeda, Masahiro Nomura, Katsuya Awano, Susumu Kinoshita, Hiroya Satoh, Koji Murakami, Masaki Tsunoda