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:
Aug. 25, 1981
Filed:
Apr. 07, 1980
Applicant:
Inventors:
Yoshimasa Machida, Wako, JP;
Isao Saito, Chofu, JP;
Motosuke Yamanaka, Urawa, JP;
Seiichiro Nomoto, Tokyo, JP;
Shigeto Negi, Kodaira, JP;
Kyosuke Kitoh, Kawague, JP;
Kanemasa Katsu, Chofu, JP;
Yukio Ohya, Koganei, JP;
Takeshi Suzuki, Abiko, JP;
Kyoko Koizumi, Abiko, JP;
Assignee:
Eisai Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
424246 ; 544 28 ;
Abstract
New cephalosporin derivatives represented by the general formula: ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 each represents hydroxy, acyloxy, and hydrogen provided that two or three of R.sub.1, R.sub.2, and R.sub.3 are not hydrogen at the same time, and their salts, and processes for the preparation thereof. The cephalosporin derivatives of the present invention are useful as antibacterial drugs.