Patents by Inventor Teikichi Kurosaki

Teikichi Kurosaki 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: 4563454
    Abstract: New propanone derivatives, the pharmacologically allowable salts thereof, their manufacturing process and pharmaceutical composition containing at least one of them as the active ingredient.
    Type: Grant
    Filed: January 24, 1985
    Date of Patent: January 7, 1986
    Inventors: Akihide Kohda, Teikichi Kurosaki
  • Patent number: 4555513
    Abstract: Novel quinolylacetic acid compounds of the formula (I): ##STR1## wherein R.sub.1 is a member selected from the group consisting of hydrogen atom, a lower alkyl group having 1 to 4 carbon atoms, and a lower alkyl group having 1 to 4 carbon atoms substituted with an aromatic group having a substituent;R.sub.2 is a member selected from the group consisting of hydrogen atom and a lower alkyl group having 1 to 4 carbon atoms;R.sub.3 is a member selected from the group consisting of hydrogen, a halogen atom, an alkyl group having 1 to 8 carbon atoms, and an alkenyl group having 2 to 8 carbon atoms;R.sub.4 and R.sub.5, carpable of cyclization, are each a member selected from the group consisting of hydrogen atom and a lower alkyl group having 1 to 4 carbon atoms;R.sub.
    Type: Grant
    Filed: December 22, 1982
    Date of Patent: November 26, 1985
    Assignee: Nippon Zoki Pharmaceutical Co.
    Inventors: Masaaki Hamada, Kaoru Okamaoto, Teikichi Kurosaki
  • Patent number: 4545993
    Abstract: Heterocyclic compounds comprising the formula (I): ##STR1## wherein: R.sub.1, R.sub.2, R.sub.4 and R.sub.5 each are hydrogen or a lower alkyl group;R.sub.3 is hydrogen, a halogen, an alkyl group, a haloalkyl group, an alkoxy group, an alkenyl group, an alkenyloxy group, an aryl group, an aryloxy group, an acyl group or a nitro group;and the broken line connotes a single or double bond at the C.sub.3 -C.sub.4 position, provided that when the broken line connotes a single bond, R.sub.3 is other than hydrogen; and pharmaceutically acceptable salts thereof,exhibiting antiinflammatory, antipyretic and analgesic action.
    Type: Grant
    Filed: July 20, 1982
    Date of Patent: October 8, 1985
    Assignee: Nippon Zoki Pharmaceutical Co. Ltd.
    Inventors: Kaoru Okamoto, Masaki Hamada, Teikichi Kurosaki
  • Patent number: 4277474
    Abstract: New propanone derivatives, useful for treating allergic diseases, the pharmacologically allowable salts thereof, their manufacturing process and pharmaceutical composition containing at least one of them as the active ingredient.
    Type: Grant
    Filed: September 27, 1979
    Date of Patent: July 7, 1981
    Assignee: Nippon Zoki Pharmaceutical Co., Ltd.
    Inventors: Akihide Kohda, Teikichi Kurosaki
  • Patent number: 4189474
    Abstract: The present invention is directed to an iron complex used in treatment of iron-deficiency anemia. The complex is formed by reacting a reactive polyiron (III) olated compound with dextrin and at least one hydroxycarboxylic acid. A dextrin-hydroxycarboxylato-polyiron (III) olated complex is produced. The reaction product contains substantially no free iron. Iron concentration is between about 35 and 47%. The complex can be administered non-orally.The compound of the subject invention has advantages over prior art compounds. Specifically, the subject complex has a high iron content, is thermally stable, and can be preserved. It may be administered intravenously without accumulating in the blood of an animal or damaging its tissue. No serious side effects result from use of the subject complex.
    Type: Grant
    Filed: December 30, 1976
    Date of Patent: February 19, 1980
    Assignee: Nippon Zoki Pharmaceutical Co., Ltd.
    Inventors: Teikichi Kurosaki, Kanzo Ohta, Hirohide Matsuura, Katsumi Sawada
  • Patent number: 4046893
    Abstract: Trioxopteridine derivatives of the formula ##STR1## , wherein R.sub.1 is a normal alkyl group having 0 to 6 hydroxyl groups and R.sub.2 is hydrogen or a normal lower alkyl group having 0 to 5 hydroxyl groups, are prepared by catalytically hydrogenating a 6-substituted-5-nitro-2,4-dioxopyrimidine to give a 6-substituted-5-amino-2,4-dioxopyrimidine, and then reacting the latter compound with a compound of the formula R.sub.2 --A--COOR.sub.3, wherein R.sub.3 is hydrogen, lower alkyl, an alkali metal or an alkaline earth metal and A is carbonyl or a group of the formula ##STR2## wherein R.sub.4 is lower alkyl. The resulting trioxopteridine derivatives have analgesic and antiphlogistic properties and are therefore useful as pharmaceutical medicaments.
    Type: Grant
    Filed: January 20, 1976
    Date of Patent: September 6, 1977
    Assignee: Nippon Zoki Pharmaceutical Co., Ltd.
    Inventors: Masuichi Takino, Teikichi Kurosaki, Munehiko Odaka
  • Patent number: 3946012
    Abstract: Trioxopteridine derivatives of the formula ##SPC1##, wherein R.sub.1 is a normal alkyl group having 0 to 6 hydroxyl groups and R.sub.2 is hydrogen or a normal lower alkyl group having 0 to 5 hydroxyl groups, are prepared by catalytically hydrogenating a 6-substituted-5-nitro-2,4-dioxopyrimidine to give a 6-substituted-5-amino-2,4-dioxopyrimidine, and then reacting the latter compound with a compound of the formula R.sub.2 --A--COOR.sub.3, wherein R.sub.3 is hydrogen, lower alkyl, an alkali metal or an alkaline earth metal and A is carbonyl or a group of the formula ##EQU1## wherein R.sub.4 is lower alkyl. The resulting trioxopteridine derivatives have analgesic and antiphlogistic properties and are therefore useful as pharmaceutical medicaments.
    Type: Grant
    Filed: September 13, 1973
    Date of Patent: March 23, 1976
    Assignee: Nippon Zoki Pharmaceutical Co., Ltd.
    Inventors: Masuichi Takino, Teikichi Kurosaki, Munehiko Odaka