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:
Dec. 11, 2001
Filed:
Jun. 15, 1999
Applicant:
Inventors:
Michiko Tamano, Tokyo, JP;
Shinichiro Maki, Tokyo, JP;
Assignee:
Toyo Ink Mfg. Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 3/314 ; C09K 1/106 ; C07C / ;
U.S. Cl.
CPC ...
H05B 3/314 ; C09K 1/106 ; C07C / ;
Abstract
Compounds for organic EL devices which emit light of red, have a high light emission brightness and have a long lifetime of light emission, and organic EL devices using the above compounds, the light-emitting materials being compounds of the formula [1],