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:
Oct. 18, 2011
Filed:
Jan. 04, 2007
Applicants:
Seong Cheol Moon, Gyeonggi-do, KR;
IN Woong Song, Gyeonggi-do, KR;
Doo Sung Kang, Gyeonggi-do, KR;
Seong Soo OH, Gyeonggi-do, KR;
Sung Jae Lee, Seoul, KR;
Inventors:
Seong Cheol Moon, Gyeonggi-do, KR;
In Woong Song, Gyeonggi-do, KR;
Doo Sung Kang, Gyeonggi-do, KR;
Seong Soo Oh, Gyeonggi-do, KR;
Sung Jae Lee, Seoul, KR;
Assignees:
Daewoong Pharmaceutical Co., Ltd., Sungnam-Si, KR;
Daewoong Chemical Co., Ltd., Hwaseong-Si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 401/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process for preparing Crystalline Form A of Lansoprazole. Specifically, the present invention relates to a process for preparing highly pure Crystalline Form A of Lansoprazole in a large scale without any additional conversion step, even by using ethanol in which Crystalline Form B is easily formed.