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:
Sep. 22, 1998
Filed:
Jan. 28, 1997
Applicant:
Inventors:
Michiko Tamano, Tokyo, JP;
Toshio Enokida, Tokyo, JP;
Assignee:
Toyo Ink Manufacturing Co., Ltd., Toyko, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
257 40 ; 357103 ; 313504 ;
Abstract
A light-emitting material for developing an organic EL device, which has the formula �1! or �2! recited in claims, and an organic EL device having layers thereof, the organic EL device having a high light emission brightness and a long life of light emission.