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:
Jun. 13, 2006
Filed:
Sep. 08, 2000
Junji Otani, Kobe, JP;
Hiroshi Yamamoto, Takarazuka, JP;
Norihisa Dan, Kyoto, JP;
Abul Iqbal, Arconciel, CH;
Robert Moretti, Petit-Lancy, CH;
Junji Otani, Kobe, JP;
Hiroshi Yamamoto, Takarazuka, JP;
Norihisa Dan, Kyoto, JP;
Abul Iqbal, Arconciel, CH;
Robert Moretti, Petit-Lancy, CH;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
Electroluminescent device comprising in this order (a) an anode (b) a hole transporting layer (c) a light-emitting layer (d) optionally an electron transporting layer and (e) a cathode and a light-emitting substance, wherein the light-emitting substance is a diketopyrrolopyrrole represented by formula I or formula III processes for the preparation of compounds I, its uses and compositions comprising the compounds I and/or III.