Patents by Inventor Shigeru Koga

Shigeru Koga 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).

  • Diphenyl sulfide derivative and pharmaceutical product which contains same as active ingredient
    Patent number: 8993543
    Abstract: [Problem] To provide a diphenyl sulfide derivative which is useful as a pharmaceutical product that has excellent S1P3 antagonist activity. [Solution] The inventors have discovered that a diphenyl sulfide derivative represented by general formula (1) (wherein R1 represents an alkoxy group having 1-6 carbon atoms, R2 represents a propyl group or an allyl group, X represents methylene or an oxygen atom, and Z represents a halogen atom) has excellent S1P3 antagonist activity as a result of extensive researches for the production of a compound that has S1P3 antagonist activity.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: March 31, 2015
    Assignee: Kyorin Pharmaceutical Co., Ltd.
    Inventors: Kumi Ishikawa, Shigeru Koga, Yasushi Kohno, Kiyoshi Fujii, Ken Yoshikawa
  • DIPHENYL SULFIDE DERIVATIVE AND PHARMACEUTICAL PRODUCT WHICH CONTAINS SAME AS ACTIVE INGREDIENT
    Publication number: 20130261089
    Abstract: [Problem] To provide a diphenyl sulfide derivative which is useful as a pharmaceutical product that has excellent S1P3 antagonist activity. [Solution] The inventors have discovered that a diphenyl sulfide derivative represented by general formula (1) (wherein R1 represents an alkoxy group having 1-6 carbon atoms, R2 represents a propyl group or an allyl group, X represents methylene or an oxygen atom, and Z represents a halogen atom) has excellent S1P3 antagonist activity as a result of extensive researches for the production of a compound that has S1P3 antagonist activity.
    Type: Application
    Filed: December 20, 2011
    Publication date: October 3, 2013
    Inventors: Kumi Ishikawa, Shigeru Koga, Yasushi Kohno, Kiyoshi Fujii, Ken Yoshikawa