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. 21, 1979
Filed:
Jun. 01, 1977
Applicant:
Inventors:
Fritz P Schafer, Gottingen-Nikolausberg, DE;
Wolfgang Luttke, Gottingen-Nikolausberg, DE;
Assignee:
Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V., Gottingen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
544197 ; 260144 ; 260152 ; 260153 ; 260335 ; 260336 ; 25230117 ; 331 / ; 544198 ; 544216 ; 585 26 ; 585320 ; 585422 ; 585469 ;
Abstract
Novel dyestuffs comprising at least one laser dyestuff radical and at least one fluorescent dyestuff radical, where the fluorescent range of the fluorescent dyestuff radical overlaps the absorption range of the laser dyestuff radical and is linked with the laser dyestuff radical directly or via a bridge member having a length of at most 20 A in such a manner that the .pi. electron systems of the individual radicals are decoupled, are outstandingly effective and long lived when used in dyestuff lasers. The dyestuffs can be of the formula: