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. 27, 1990
Filed:
Apr. 15, 1988
Applicant:
Inventors:
Michael Preiss, Wuppertal, DE;
Ulrich Schorsch, Duesseldorf, DE;
Arthur Haaf, Wuppertal, DE;
Paul Naab, Elkhart, DE;
Rudolf Zerbes, Wuppertal, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; A61K / ;
U.S. Cl.
CPC ...
514254 ; 5142245 ; 5142282 ; 5142285 ; 5142302 ; 5142332 ; 5142335 ; 5142345 ; 514294 ; 514300 ; 514312 ; 544 60 ; 544 61 ; 544 62 ; 544126 ; 544127 ; 544128 ; 544349 ; 544363 ; 546122 ; 546123 ; 546156 ;
Abstract
Known quinolone carboxylic acid derivatives of the formula ##STR1## are treated so as to become readily administrable parenterally, the treatment comprising dissolving the active compound using an acid, allowing the solution to stand for about 0.15 to 150 hours at a temperature from room temperature to the boiling point of the solution, filtering the solution, precipitating the active compound from the solution using a basic reagent, and converting the precipitated active compound into a form which can be administered parenterally.