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. 10, 1996
Filed:
Jan. 27, 1995
Applicant:
Inventors:
Peter Neumann, Mannheim, DE;
J urgen Kipper, Karlsruhe, DE;
Bernhard Albert, Maxdorf, DE;
Gerhard Wagenblast, Wachenheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
25230119 ; 427-8 ; 73 36 ;
Abstract
Compounds from the class consisting of the phthalocyanines, naphthalocyanines, the aminium compounds of aromatic amines, the methine dyes or the azulenesquaric acid dyes, which have their absorption maximum in the range from 600 to 1,200 nm and a fluorescence maximum in the range from 620 to 1,200 nm, are used as crack-detecting agents.