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:
May. 28, 1996
Filed:
Jan. 12, 1994
Applicant:
Inventors:
Reinhard Trodel, Hochheim am Main, DE;
Manfred Wieduwilt, Frankfurt am Main, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
540226 ; 540227 ;
Abstract
Process for the preparation of crystalline TACA ##STR1## in the presence of a base and subsequent precipitation by addition of a TACA solution to a partial amount of an acid, which can also contain a precipitation auxiliary, and subsequent completion of the precipitation by further addition of acid or by further addition of TACA solution and acid.