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. 24, 2022
Filed:
Aug. 25, 2016
Sumitomo Chemical Company, Limited, Tokyo, JP;
Toshiaki Sasada, Tsukuba, JP;
Takashi Kuragano, Tsukuba, JP;
Yoshiaki Tsubata, Tsukuba, JP;
Makoto Anryu, Tokyo, JP;
Takakazu Saito, Tsukuba, JP;
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Abstract
A composition which is useful for production of a light emitting device excellent in light emission efficiency is provided. In particular, provided is a composition containing a compound represented by formula (1) and a phosphorescent compound, wherein Rand Reach independently represent a substituent, nrepresents an integer of 1 to 14, and Arrepresents an arylene group or a divalent heterocyclic group, and at least one of one or more groups Aris a group represented by the formula (1-A), wherein the variable groups Rto R, R, and Rare as defined in the specification.