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. 29, 2010
Filed:
Sep. 03, 2004
Masaomi Sasaki, Susono, JP;
Masafumi Torii, Yokohama, JP;
Toshiya Sagisaka, Yokohama, JP;
Takashi Okada, Yokohama, JP;
Shinichi Kawamura, Kawasaki, JP;
Chihaya Adachi, Chitose, JP;
Yuuichiroh Kawamura, Chitose, JP;
Kenji Muneuchi, Yonezawa, JP;
Masaomi Sasaki, Susono, JP;
Masafumi Torii, Yokohama, JP;
Toshiya Sagisaka, Yokohama, JP;
Takashi Okada, Yokohama, JP;
Shinichi Kawamura, Kawasaki, JP;
Chihaya Adachi, Chitose, JP;
Yuuichiroh Kawamura, Chitose, JP;
Kenji Muneuchi, Yonezawa, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
A 3,6-diphenylcarbazole compound, which has a specific formula and realizes an organic electroluminescent device having high durability and high luminous efficiency. An electroluminescent device which includes an anode; a cathode which faces the anode; and at least one layer including a luminescent layer, optionally a hole transporting layer and an electron transporting layer, which is located between the anode and the cathode, wherein the at least one layer includes the 3,6-diphenylcarbazole compound.