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:
Mar. 05, 2019
Filed:
Dec. 08, 2015
Merck Patent Gmbh, Darmstadt, DE;
Jochen Pfister, Seeheim-Jugenheim, DE;
Frank Stieber, Einhausen, DE;
Elvira Montenegro, Weinheim, DE;
Teresa Mujica-Fernaud, Darmstadt, DE;
Merck Patent GmbH, Darmstadt, DE;
Abstract
The present application relates to spirobifluorene derivatives of a formula (I), to the use thereof in electronic devices, especially in organic electroluminescent devices (OLEDs), where they may be used in hole-transporting function, and to processes for preparing said derivatives. The compounds have one or more properties selected from very good hole-conducting properties, very good electron-blocking properties, high glass transition temperature, high oxidation stability, good solubility and high thermal stability.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile