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:
Jul. 13, 1999
Filed:
Dec. 21, 1995
Helmut Pieper, Biberach, DE;
Volkhard Austel, Biberach, DE;
Frank Himmelsbach, Mittelbiberach, DE;
Gunter Linz, Mittelbiberach, DE;
Brian Guth, Warthausen, DE;
Johannes Weisenberger, Biberach, DE;
Dr. Karl Thomae GmbH, Biberach an der Riss, DE;
Abstract
The present invention relates to piperazine derivatives of the general formula ##STR1## in which R.sub.a, Y.sub.1 to Y.sub.3 and E are defined herein, tautomers thereof, stereoisomers thereof, including their mixtures, and salts thereof, and in particular physiologically tolerated salts thereof with inorganic or organic acids or bases. These compounds have valuable pharmacological properties, such as aggregation-inhibiting activity. This invention also relates to medicaments comprising these compounds and to processes for the preparation of these compounds.