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. 07, 2017
Filed:
Feb. 14, 2012
Norimasa Yokoyama, Tokyo, JP;
Makoto Nagaoka, Ibaraki, JP;
Sawa Izumi, Tokyo, JP;
Hiroshi Ookuma, Tokyo, JP;
Shuichi Hayashi, Tokyo, JP;
Norimasa Yokoyama, Tokyo, JP;
Makoto Nagaoka, Ibaraki, JP;
Sawa Izumi, Tokyo, JP;
Hiroshi Ookuma, Tokyo, JP;
Shuichi Hayashi, Tokyo, JP;
HODOGAYA CHEMICAL CO., LTD., Tokyo, JP;
Abstract
A compound having an indolocarbazole ring structure is represented by the following general formula (1), and is used as a material for forming a highly efficient and highly durable organic electroluminescent device. The compound features excellent hole injection/transport capability, has electron blocking power and is highly stable in the form of a thin film.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile