The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 1997
Filed:
May. 30, 1995
Applicant:
Inventors:
Kazuo Ohtsuki, Tokyo, JP;
Akikazu Mitsunobu, Tokyo, JP;
Yoshihiro Imaizumi, Tokyo, JP;
Nobuyoshi Honda, Ishibashi, JP;
Satoshi Inoue, Ishibashi, JP;
Assignees:
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Snow Brank Milk Products Co., Ltd., Sapporo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07J / ; C07J / ;
U.S. Cl.
CPC ...
552615 ;
Abstract
Provided are stable hydrate crystals of 14.alpha.-hydroxy-4-androstene-3,6,17-trione having a biological activity of human placenta-originating estrodiene synthesis enzyme inhibitory action. These hydrate crystals include two kinds of 14.alpha.-hydroxy-4-androstene-3,6,17-trione hydrate crystals having a diffraction pattern having characteristic peaks at diffraction angles in crystalline powder X-ray diffraction. Processes for producing these hydrate crystals are also provided.