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:
Jan. 23, 2007
Filed:
Sep. 01, 2004
Applicants:
Tsutomu Ishida, Chiba, JP;
Takehiko Shimamura, Chiba, JP;
Yoshiyuki Totani, Chiba, JP;
Masakatsu Nakatsuka, Chiba, JP;
Inventors:
Tsutomu Ishida, Chiba, JP;
Takehiko Shimamura, Chiba, JP;
Yoshiyuki Totani, Chiba, JP;
Masakatsu Nakatsuka, Chiba, JP;
Assignee:
Mitsui Chemicals, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 13/00 (2006.01); C07C 15/00 (2006.01); C09K 11/00 (2006.01); C09K 11/16 (2006.01); H01J 1/63 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electroluminescent element in which at least one layer containing at least one of novel hydrocarbon compounds with an anthracene ring and a fluorene ring directly bound is held between a pair of electrodes. The compounds can advantageously be used in a luminescent element and provide an organic electroluminescent element having an excellent luminescent efficiency and a long luminescent life.