Patents by Inventor Takuma Minamisono

Takuma Minamisono 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).

  • Salt of tetrahydrotriazolopyridine derivative and crystal thereof
    Patent number: 8703954
    Abstract: The present invention provides a crystal of a 1.5 D-tartrate of a compound represented by the formula (1) having an A production inhibitory effect, characterized in that the crystal has a diffraction peak at a diffraction angle (20.2) of 23.2 in powder X-ray diffractometry; a crystal of a disulfate of the compound of the formula (1), characterized in that the crystal has a diffraction peak at a diffraction angle (20.2) of 17.1 in powder X-ray diffractometry; various other salts of the compound of the formula (1); crystal polymorphs of these salts; and the like, which are expected to be used as drug substances.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: April 22, 2014
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Takuma Minamisono, Noritaka Kitazawa, Ikuo Kushida
  • Heterocycle-substituted pyridine derivative's salt or crystal thereof
    Patent number: 8058444
    Abstract: There is provided a heterocycle-substituted pyridine derivative's salt or a crystal thereof. The present invention provides an acid addition salt of 3-(3-(4-(pyridin-2-yloxymethyl)-benzyl)-isoxazol-5-yl)-pyridin-2-yl amine or a crystal thereof as well as process for producing the same.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: November 15, 2011
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Jun Niijima, Kazutaka Nakamoto, Masayuki Matsukura, Keigo Tanaka, Eiichi Yamamoto, Takuma Minamisono
  • SALT OF TETRAHYDROTRIAZOLOPYRIDINE DERIVATIVE AND CRYSTAL THEREOF
    Publication number: 20110275822
    Abstract: The present invention provides a crystal of a 1.5 D-tartrate of a compound represented by the formula (1) having an A production inhibitory effect, characterized in that the crystal has a diffraction peak at a diffraction angle (20.2) of 23.2 in powder X-ray diffractometry; a crystal of a disulfate of the compound of the formula (1), characterized in that the crystal has a diffraction peak at a diffraction angle (20.2) of 17.1 in powder X-ray diffractometry; various other salts of the compound of the formula (1); crystal polymorphs of these salts; and the like, which are expected to be used as drug substances.
    Type: Application
    Filed: February 24, 2010
    Publication date: November 10, 2011
    Inventors: Takuma Minamisono, Noritaka Kitazawa, Ikuo Kushida
  • HETEROCYCLE-SUBSTITUTED PYRIDINE DERIVATIVE'S SALT OR CRYSTAL THEREOF
    Publication number: 20080275244
    Abstract: There is provided a heterocycle-substituted pyridine derivative's salt or a crystal thereof. The present invention provides an acid addition salt of 3-(3-(4-(pyridin-2-yloxymethyl)-benzyl)-isoxazol-5-yl)-pyridin-2-yl amine or a crystal thereof as well as process for producing the same.
    Type: Application
    Filed: April 25, 2008
    Publication date: November 6, 2008
    Inventors: Jun Niijima, Kazutaka Nakamoto, Masayuki Matsukura, Keigo Tanaka, Eiichi Yamamoto, Takuma Minamisono