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:
May. 17, 2016
Filed:
Feb. 28, 2011
Heinrich Becker, Hofheim, DE;
Jochen Schwaiger, Frankfurt am Main, DE;
Hubert Spreitzer, Viernheim, DE;
Frank Voges, Bad Duerkheim, DE;
Holger Heil, Frankfurt am Main, DE;
Heinrich Becker, Hofheim, DE;
Jochen Schwaiger, Frankfurt am Main, DE;
Hubert Spreitzer, Viernheim, DE;
Frank Voges, Bad Duerkheim, DE;
Holger Heil, Frankfurt am Main, DE;
Merck Patent GmbH, Darmstadt, DE;
Abstract
The present invention relates to compounds having a spirobifluorene skeleton of the formula (I) for use as functional materials in electronic devices, in particular for use in the charge-transport layer and/or emission layer of organic electroluminescent devices. The invention furthermore relates to a process for the preparation of the compounds according to the invention and to mixtures comprising the compounds according to the invention. The invention furthermore relates to the use of the compounds of the formula (I) in electronic devices and to electronic devices comprising the compounds of the formula (I).