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:
May. 12, 2009
Filed:
Jun. 26, 2007
Applicant:
Chin-tsai Fan, Tainan Hsien, TW;
Inventor:
Chin-Tsai Fan, Tainan Hsien, TW;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 401/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a method for preparing an antiulcer agent, 2-(2-pyridinylmethylsulfinyl)benzimidazoles, such as Omeprazole, Lansoprazole, Pantoprazole and Rabeprazole, which includes oxidizing an intermediate having a linkage of methylthio group (—CHS—) to methylsulfinyl (—CHS(O)—) in the presence of an oxidation catalyst of an alkali metal salt of tungstate at a temperature of 10-50° C.
Fan, Chin-Tsai. (2009). Method for preparing 2-(2-pyridinylmethylsulfinyl) benzimidazoles (U.S. Patent No. 7531666). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7531666
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile