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:
Jul. 10, 2007
Filed:
Sep. 07, 2001
Stephan Haubold, Hamburg, DE;
Markus Haase, Hamburg, DE;
Karsten Riwotzki, Hamburg, DE;
Horst Weller, Hamburg, DE;
Heike Meyssamy, Hamburg, DE;
Fernando Ibarra, Hamburg, DE;
Stephan Haubold, Hamburg, DE;
Markus Haase, Hamburg, DE;
Karsten Riwotzki, Hamburg, DE;
Horst Weller, Hamburg, DE;
Heike Meyssamy, Hamburg, DE;
Fernando Ibarra, Hamburg, DE;
Centrum fuer Angewandte Nanotechnologie (CAN) GmbH, Hamburg, DE;
Abstract
Methods for the preparation of inorganic nanoparticles capable of fluorescence, wherein the nanoparticles consist of a host material that comprises at least one dopant. The synthesis of the invention in organic solvents allows to gain a considerably higher yield compared to the prior art synthesis in water. All kinds of objects can advantageously be marked and reliably authenticated by using an automated method on the basis of a characteristic emission. Further, the size distribution of the prepared nanoparticles is nartower which renders a subsequent size-selected separation process superfluous.