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:
Sep. 19, 1995
Filed:
Aug. 03, 1993
Yukio Hirayama, Kawasaki, JP;
Syuzi Sayama, Kawasaki, JP;
Kiyomi Yamaguchi, Kawasaki, JP;
Shigeru Miyamoto, Kawasaki, JP;
Yasuo Takahashi, Kawasaki, JP;
Keisuke Kato, Kawasaki, JP;
Tomio Sasao, Hiratsuka, JP;
Kiyoshi Iijima, Tokyo, JP;
Sankyo Company, Limited, Tokyo, JP;
Abstract
A compound of formula (I): ##STR1## or a salt thereof, is prepared by reacting 7-aminocephalosporanic acid or a salt thereof, with a solution comprising a compound of formula ROSO.sub.3 H in a compound of formula ROH, and in the presence of at least one compound of formula B(OR).sub.3 or compound of formula CH.sub.2 (OR).sub.2 ; wherein, in each of said compounds of formulae (I), ROSO.sub.3 H, ROH, B(OR).sub.3 and CH.sub.2 (OR).sub.2, R represents an alkyl group having from 1 to 6 carbon atoms.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile