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:
Nov. 15, 1983
Filed:
Aug. 26, 1981
Applicant:
Inventors:
Masahito Nakayama, Higashi-Yamato, JP;
Shigeru Kimura, Tachikawa, JP;
Toshimi Mizoguchi, Higashi-Murayama, JP;
Sohei Tanabe, Higashi-Murayama, JP;
Toshihito Mori, Higashi-Murayama, JP;
Assignee:
Kowa Co., Ltd., Nagoya, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2602 / ; 424274 ; 435119 ;
Abstract
An antibiotic KA-6643-A or a salt thereof having the formula: ##STR1## is produced by a process comprising the step of hydrolyzing an antibiotic KA-6643-B of the formula: ##STR2##