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:
Dec. 22, 2009
Filed:
Mar. 24, 2003
Applicants:
Philipp Stössel, Frankfurt, DE;
Ingrid Bach, Bad Soden, DE;
Hubert Spreitzer, Viernheim, DE;
Heinrich Becker, Eppstein-Niederjosbach, DE;
Inventors:
Philipp Stössel, Frankfurt, DE;
Ingrid Bach, Bad Soden, DE;
Hubert Spreitzer, Viernheim, DE;
Heinrich Becker, Eppstein-Niederjosbach, DE;
Assignee:
Merck Patent GmbH, Darmstadt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 51/54 (2006.01); C09K 11/06 (2006.01); H01L 31/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention describes novel organometallic compounds which are phosphorescence emitters. Such compounds can, as active constituents (functional materials), be used in a number of different applications, which in the broadest sense can be classed as belonging to the electronics industry. The compounds according to the invention are described by the formulas (I), (Ia), (II), (IIa), (III), (IIIa), (IV) and (IVa).