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:
Apr. 15, 2008
Filed:
Jan. 15, 2005
Martin Koenemann, Mannheim, DE;
Arno Boehm, Mannheim, DE;
Willi Helfer, Friedelsheim, DE;
Juergen Romeis, Ludwigshafen, DE;
Jianqiang Qu, Mannheim, DE;
Klaus Muellen, Cologne, DE;
Martin Koenemann, Mannheim, DE;
Arno Boehm, Mannheim, DE;
Willi Helfer, Friedelsheim, DE;
Juergen Romeis, Ludwigshafen, DE;
Jianqiang Qu, Mannheim, DE;
Klaus Muellen, Cologne, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Maz-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V., Munich, DE;
Abstract
A process for preparing terylene-3,4:11,12-tetracarboximides I where the variables are each defined as follows: in the presence of a base-stable, high-boiling organic solvent and of an alkali metal or alkaline earth metal base, with a naphthalene-1,8-dicarboximide III in which X is hydrogen, bromine or chlorine.