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:
Aug. 30, 1977
Filed:
Jun. 07, 1976
Applicant:
Inventors:
Franz Merger, Frankenthal, DT;
Theodor Jacobsen, Limburgerhof, DT;
Heinz Eilingsfeld, Frankenthal, DT;
Ernest Miesen, Ludwigshafen, DT;
Gerhard Nestler, Ludwigshafen, DT;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen (Rhine), DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ;
U.S. Cl.
CPC ...
260369 ;
Abstract
Anthraquinones are manufactured by cyclizing o-benzoylbenzoic acids in the presence of oxygen-containing compounds of aluminum and silicon at elevated temperatures. The products are starting materials for the manufacture of dyes.