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:
Mar. 16, 1993
Filed:
May. 10, 1991
Applicant:
Inventors:
Walter Rittersdorf, Mannheim, DE;
Werner Guethlein, Mannheim, DE;
Peter Vogel, Hemsbach, DE;
Detlef Thym, Mannheim, DE;
Assignee:
Boehringer Mannheim GmbH, Mannheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
436 79 ;
Abstract
The subject matter of the present invention are naphthol derivatives having the general formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3 are the same or different and each represents hydrogen, an alkyl or alkoxy group, in which at least one of the residues is a (C.sub.8 -C.sub.30)-alkyl or alkoxy residue