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:
Oct. 31, 2017
Filed:
Mar. 20, 2012
Thomas Schäfer, Liestal, CH;
Teresa Marina Figueira Duarte, Mainz, DE;
Christian Schildknecht, Fremont, CA (US);
Nicolle Langer, Heppenheim, DE;
Ute Heinemeyer, Neustadt, DE;
Heinz Wolleb, Fehren, CH;
Soichi Watanabe, Mannheim, DE;
Christian Lennartz, Schifferstadt, DE;
Gerhard Wagenblast, Wachenheim, DE;
Annemarie Wolleb, Fehren, CH;
Kristina Bardon, Waldshut, DE;
Flavio Luiz Benedito, Ludwigshafen, DE;
Thomas Schäfer, Liestal, CH;
Teresa Marina Figueira Duarte, Mainz, DE;
Christian Schildknecht, Fremont, CA (US);
Nicolle Langer, Heppenheim, DE;
Ute Heinemeyer, Neustadt, DE;
Heinz Wolleb, Fehren, CH;
Soichi Watanabe, Mannheim, DE;
Christian Lennartz, Schifferstadt, DE;
Gerhard Wagenblast, Wachenheim, DE;
Annemarie Wolleb, Fehren, CH;
Kristina Bardon, Waldshut, DE;
Flavio Luiz Benedito, Ludwigshafen, DE;
UDC Ireland Limited, Dublin, IE;
Abstract
The present invention relates to compounds of formula a process for their production and their use in electronic devices, especially electroluminescent devices. When used as host material for phosphorescent emitters in electroluminescent devices, the compounds of formula I may provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices.