Anthracene derivative, light emitting element using the same, and light emitting device using the same
Granted 22 Dec 2015 · 2 office actions
Current assignee: Semiconductor Energy Laboratory Co., Ltd. · originally Semiconductor Energy Laboratory
Law firm: Law firm · Log in to unlock
Attorney: Attorney · Log in to unlock
Inventors: Harue Nakashima, Kumi Kojima, Sachiko Kawakami, Nobuharu Ohsawa +1 · Examiner: Gregory Clark · AU 1786 · TC 1700
Life of the patent
3 dated eventsAbstract
It is an object of the present invention to provide a light emitting element, which is resistant to repetition of an oxidation reaction. It is another object of the invention to provide a light emitting element, which is resistant to repetition of a reduction reaction. An anthracene derivative is represented by a general formula (1). In the general formula (1), R1 represents hydrogen or an alkyl group having 1 to 4 carbon atoms, R2 represents any one of hydrogen, an alkyl group having 1 to 4 carbon atoms and an aryl group having 6 to 12 carbon atoms, R3 represents any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 12 carbon atoms, Ph1 represents a phenyl group, and X1 represents an arylene group having 6 to 15 carbon atoms. [structure]
Claims
13 · 2 independent · depth 2Classifications
5 codes- C09K11/06
- C07D403/12
- H05B33/14
- H01L51/50
- H01L51/00
Claim changes
SoonSee which claims were amended, added or cancelled during examination, with every added and removed word marked.
The published claims of this patent are not paired with the granted ones in what we hold.
File wrapper
See the full prosecution history — every USPTO and applicant action on this file, in order.
Log in to unlockTerm & fees
See the term timeline — pendency span, in-force span, the maintenance fees paid and both computed expiry dates.
Log in to unlockPriority chain
1 priority documents›Priority documents — 1
| Type | Document | Date |
|---|---|---|
| related publication | US 20140364626 A1 | 11 Dec 2014 |
Validity challenges
See the validity challenges on record — reexaminations, IPRs and PGRs, with their institution decisions and outcomes.
Log in to unlockCitations
See every patent this one cites and every patent that cites it back — publication, assignee, and how each one was found.
Log in to unlock