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:
Jun. 26, 1979
Filed:
Mar. 06, 1978
Applicant:
Inventors:
Shigeo Seki, Tokyo, JP;
Satoru Nakabayashi, Yokohama, JP;
Ken Nishihata, Yokohama, JP;
Nobuo Itoh, Yokohama, JP;
Toshinori Saito, Yokohama, JP;
Masahiro Onodera, Takatsuki, JP;
Shunzo Fukatsu, Tokyo, JP;
Assignee:
Meiji Seika Kaisha Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544 16 ; 544 26 ; 544 30 ;
Abstract
A process for preparing a cephalosporin ester which comprises subjecting an organic halide or an alcohol to reaction with a cephalosporin acid, a cephalosporin acid halide or a salt thereof in the presence of liquid sulfur dioxide.