Patents by Inventor Makio Kitazawa

Makio Kitazawa 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: 7230031
    Abstract: The present invention provides a compound represented by general formula (I): or pharmaceutically acceptable salts thereof, wherein W is O, S(O)m, CH2 and the like; R1 is halogen, lower alkyl, halo-lower alkyl, CN and the like; R3 is hydrogen and the like; R4 is hydrogen, halogen, alkyl, halo-lower alkyl, substituted alkyl, aryl, aralkyl, alkoxy, substituted alkoxy, alkanoyl, aroyl, —CONR7(R8), —S(O)mR9, —SO2NR7(R8) and the like; R5 is hydrogen, halogen, alkyl, substituted alkyl and the like; A is —N(R6)CO—A1—COR10 and the like; pharmaceutical compositions containing them and their uses, which have a high affinity to human thyroid hormone receptors, in particular human thyroid hormone receptor ?.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: June 12, 2007
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Hiroaki Shiohara, Tetsuya Nakamura, Norihiko Kikuchi, Tomonaga Ozawa, Makio Kitazawa
  • Publication number: 20050085541
    Abstract: The present invention provides a compound represented by general formula (I): or pharmaceutically acceptable salts thereof, wherein W is O, S(O)m, CH2 and the like; R1 is halogen, lower alkyl, halo-lower alkyl, CN and the like; R3 is hydrogen and the like; R4 is hydrogen, halogen, alkyl, halo-lower alkyl, substituted alkyl, aryl, aralkyl, alkoxy, substituted alkoxy, alkanoyl, aroyl, —CONR7(R8), —S(O)mR9, —SO2NR7(R8) and the like; R5 is hydrogen, halogen, alkyl, substituted alkyl and the like; A is —N(R6)CO-A1-COR10 and the like; pharmaceutical compositions containing them and their uses, which have a high affinity to human thyroid hormone receptors, in particular human thyroid hormone receptor ?.
    Type: Application
    Filed: January 28, 2003
    Publication date: April 21, 2005
    Inventors: Hiroaki Shiohara, Tetsuya Nakamura, Norihiko Kikuchi, Tomonaga Ozawa, Makio Kitazawa
  • Publication number: 20040235932
    Abstract: A pharmaceutical composition excellent for treatment or prevention of a glaucoma or an ocular hypertension, which inhibits the development of drug resistance, and which can be administered for a longer period of time is provided.
    Type: Application
    Filed: June 10, 2004
    Publication date: November 25, 2004
    Inventors: Kenji Yamazaki, Ichiro Hirotsu, Hiroshi Miyata, Makio Kitazawa
  • Patent number: 6310086
    Abstract: The present invention relates to indole derivatives represented by the general formula: (wherein R represents an ethyl group or a 2,2,2-trifluoroethyl group; Y represents a hydroxy group or a pivaloyloxy group; and the carbon atom marked with (R) represents a carbon atom in (R) configuration) and pharmaceutically acceptable salts thereof, which have potent and prolonged reducing effects on intraocular pressure and are useful as agents for lowering intraocular pressure.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: October 30, 2001
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Makio Kitazawa, Toshiaki Yamaguchi, Hiroshi Miyata, Yukiyoshi Ajisawa
  • Patent number: 6303655
    Abstract: The present invention relates to an agent for the prevention or treatment of diseases associated with excessive proliferation of retinal pigment epithelial cells such as proliferative vitreoretinopathy comprising as the active ingredient N-(3,4-dimethoxycinnamoyl)anthranilic acid represented by the formula: or a pharmaceutically acceptable salt thereof, which has an inhibitory activity on proliferation of retinal pigment epithelial cells.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: October 16, 2001
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Yasuo Takehana, Makio Kitazawa
  • Patent number: 6136852
    Abstract: The present invention relates to 3,4-disubstituted phenylethanolaminotetralincarboxylic acid derivatives represented by the general formula: ##STR1## [wherein Q represents a vinylene group or a group represented by the general formula:-A-(CH.sub.2).sub.m --(wherein A represents an oxygen atom or a methylene group; and m is an integer of from 1 to 6); R represents a hydrogen atom or a lower alkyl group; n is an integer of 1 or 2; the carbon atom marked with * represents a carbon atom in R configuration, S configuration or a mixture thereof; and the carbon atom marked with (S) represents a carbon atom in S configuration] and pharmaceutically acceptable salts thereof, which have a selective .beta..sub.2 -adrenergic receptor stimulating effect with relieved burdens on the heart such as tachycardia and are useful as an agent for the prevention of threatened abortion and premature labor, a bronchodilator and an agent for pain remission and promoting stone removal in urolithiasis.
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: October 24, 2000
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Makio Kitazawa, Kosuke Okazaki, Tetsuro Tamai, Masaru Saito, Nobuyuki Tanaka, Hiroaki Kobayashi, Ken Kikuchi, Hideyuki Muranaka
  • Patent number: 6133266
    Abstract: The present invention relates to 3,4-disubstituted phenylethanolaminotetralincarboxamide derivatives represented by the general formula: ##STR1## (wherein A represents a lower alkylene group; B represents an amino group, a di(lower alkyl)amino group or a 3 to 7-membered alicyclic amino group which may contain an oxygen atom in the ring; n is an integer of 1 or 2; the carbon atom marked with * represents a carbon atom in R configuration, S configuration or a mixture thereof; and the carbon atom marked with (S) represents a carbon atom in S configuration) and pharmaceutically acceptable salts thereof, which have a selective .beta..sub.2 -adrenergic receptor stimulating effect with relieved burdens on the heart such as tachycardia and are useful as an agent for the prevention of threatened abortion and premature labor, a bronchodilator and an agent for pain remission and stone removal in urolithiasis.
    Type: Grant
    Filed: February 10, 1999
    Date of Patent: October 17, 2000
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Makio Kitazawa, Kosuke Okazaki, Tetsuro Tamai, Masaru Saito, Nobuyuki Tanaka, Hiroaki Kobayashi, Ken Kikuchi, Hideyuki Muranaka
  • Patent number: 6046192
    Abstract: The present invention relates to a phenylethanolaminotetralincarboxamide derivative represented by the general formula: ##STR1## (wherein A represents a lower alkylene group; B represents an amino group, a di(lower alkyl)amino group or a 3 to 7-membered alicyclic amino group which may contain an oxygen atom in the ring; the carbon atom marked with * represents a carbon atom in (R) configuration, (S) configuration or a mixture thereof; and the carbon atom marked with (S) represents a carbon atom in (S) configuration) and a pharmaceutically acceptable salt thereof, which have a selective .beta..sub.2 -adrenergic receptor stimulating effect with relieved burdens on the heart such as tachycardia and are useful as an agent for the prevention of threatened abortion and premature labor, a bronchodilator, and an agent for pain remission and promoting stone removal in urolithiasis.
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: April 4, 2000
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Makio Kitazawa, Kosuke Okazaki, Tetsuro Tamai, Masaru Saito, Nobuyuki Tanaka, Hiroaki Kobayashi, Ken Kikuchi, Hideyuki Muranaka
  • Patent number: 5387603
    Abstract: Indoline compounds represented by the formula: ##STR1## wherein R represents a saturated or unsaturated aliphatic acyl group which may have one or more halogen atoms, a hydroxy group, a lower alkoxy group, a carboxy group, a lower alkoxycarbonyl group, a cycloalkyl group or an aryl group as substituents; a hydroxyalkyl group; an aliphatic acyloxyalkyl group; a lower alkyl group having a lower alkoxy group, a carboxy group, a lower alkoxycarbonyl group, an aryl substituted lower alkoxycarbonyl group, a carbamoyl group, a mono- or dialkyl substituted carbamoyl group or a cyano group as substituents; an aromatic acyl group which may have one or more halogen atoms as substituents; a furoyl group or a pyridylcarbonyl group; R.sup.
    Type: Grant
    Filed: December 1, 1993
    Date of Patent: February 7, 1995
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Makio Kitazawa, Masaaki Ban, Kosuke Okazaki, Motoyasu Ozawa, Toshikazu Yazaki, Ryoichi Yamagishi
  • Patent number: 5177069
    Abstract: The present invention provides a novel class of naphthylsulfonylalkanoic acid compounds such as a structure corrresponding to the formula: ##STR1## or a pharmaceutically acceptable salt thereof. A present invention naphthylsulfonylalkanoic acid compound is useful for prevention or treatment of irritable bowel syndrome, biliary dyskinesia and acute pancreatitis.
    Type: Grant
    Filed: December 6, 1990
    Date of Patent: January 5, 1993
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Makio Kitazawa, Masuo Akahane, Yasushi Nakano, Atsushi Tsubaki, Kazuaki Sato, Masaaki Ban, Michihiro Kobayashi
  • Patent number: 5145869
    Abstract: The present invention provides a novel class of phenylsulfonylalkanoic acid compounds such as a structure corresponding to the formula: ##STR1## or a pharmaceutically acceptable salt thereof. A present invention phenylsulfonylalkanoic acid compound is useful for prevention or treatment of irritable bowel syndrome, biliary dyskinesia and acute pancreatitis.
    Type: Grant
    Filed: April 11, 1991
    Date of Patent: September 8, 1992
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Makio Kitazawa, Masuo Akahane, Yasushi Nakano, Atsushi Tsubaki, Kazuaki Sato, Masaaki Ban, Michihiro Kobayashi
  • Patent number: 4780477
    Abstract: This invention provides novel isatin compounds which are useful as therapeutic agents. The invention isatin compounds and the pharmaceutically acceptable salts thereof exhibit anti-ulcer activities which are applicable for propylaxis and treatment of ulcer diseases in the digestive tract of animals.
    Type: Grant
    Filed: May 29, 1986
    Date of Patent: October 25, 1988
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Michihiro Kobayashi, Makio Kitazawa, Masuo Akahane, Tsutomu Tsukamoto, Ryoji Yamamoto, Yasushi Nakano