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:
Feb. 11, 2003
Filed:
Nov. 07, 2001
Applicant:
Inventors:
Petr Nadenik, Wörgl, AT;
Helmut Wagner, Kramsach, AT;
Assignee:
Biochemie Gesellschaft m.b.H., Kundl, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
C07D / ;
Abstract
A process in the isolation of 7-aminocephalosporanic acid (7-ACA) from an alkaline, neutral or slightly acidic medium in the presence of an additive, e.g. selected from the group comprising organic carboxylic acid esters, polymeric glycols, polyacryls, amines and polyamines, melaminformaldehyde resins or amino acids and esters thereof to obtain 7-ACA agglomerates and or rosettes.