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:
Sep. 08, 1992
Filed:
Jan. 09, 1991
Applicant:
Inventors:
Guenther Riedel, Heidelberg, DE;
Christos Vamvakaris, Kallstadt, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10L / ;
U.S. Cl.
CPC ...
208 14 ; 208 12 ; 208 16 ;
Abstract
Marked mineral oils containing basic dyes which have at least two, optionally substituted, amino groups and which, on addition of a protogenic acid and, optionally, a metal halide, experience a bathochromic shift of their absorption maximum and an increase in absorbance, and a method of marking mineral oils with basic dyes.
Riedel, Guenther. (1992). Marked mineral oils and method of marking mineral oils with basic dyes (U.S. Patent No. 5145573). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5145573
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile