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:
Nov. 30, 1993
Filed:
Feb. 05, 1992
Applicant:
Inventors:
Helmut Reichelt, Neustadt, DE;
Christos Vamvakaris, Kallstadt, DE;
Georg Zeidler, Dannstadt-Schauernheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10L / ; C09B / ;
U.S. Cl.
CPC ...
252 / ; 44328 ; 534851 ; 534857 ; 534858 ; 208 12 ; 208 15 ; 208 16 ;
Abstract
Azo dyes useful for marking mineral oils have the formula ##STR1## where R.sup.1 and R.sup.2 are hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy,
Reichelt, Helmut. (1993). Oil-soluble phenylazoaniline dyes (U.S. Patent No. 5266227). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5266227
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile