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:
Apr. 24, 2007
Filed:
Mar. 16, 2004
Margaret J. Helber, Webster, NY (US);
Tukaram K. Hatwar, Penfield, NY (US);
Hans F. Schmitthenner, Rush, NY (US);
Peter G. Bessey, Clifton Springs, NY (US);
Manju Rajeswaran, Fairport, NY (US);
Margaret J. Helber, Webster, NY (US);
Tukaram K. Hatwar, Penfield, NY (US);
Hans F. Schmitthenner, Rush, NY (US);
Peter G. Bessey, Clifton Springs, NY (US);
Manju Rajeswaran, Fairport, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
An electroluminescent device comprising a host material and a rubrene derivative having a naphthacene nucleus comprising four fused phenyl rings a, b, c, and d, in order, containing two secondary phenyl ring groups linked to the 'c' ring, each bearing directly or indirectly a fluoro or perfluoroalkyl group, wherein each fluoro or perfluoroalkyl group is either: