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:
Feb. 26, 2019
Filed:
Mar. 13, 2015
Idemitsu Kosan Co., Ltd., Chiyoda-ku, JP;
Heinz Wolleb, Fehren, CH;
Yuki Nakano, Basel, CH;
Thomas Raimann, Sisseln, CH;
Ute Heinemeyer, Neustadt, DE;
Hideaki Nagashima, Basel, CH;
Yuichi Nishimae, Basel, CH;
IDEMITSU KOSAN CO., LTD., Chiyoda-ku, JP;
Abstract
The present invention relates to compounds of formula (I) which are characterized in that they are substituted by at least one nitrile substituted carbazolyl group and their use in electronic devices, especially electroluminescent devices. When used as electron transport material, hole blocking material and/or 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.