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:
Nov. 04, 2014
Filed:
Apr. 20, 2011
Tetsuya Inoue, Sodegaura, JP;
Mitsunori Ito, Sodegaura, JP;
Kei Yoshida, Sodegaura, JP;
Kumiko Hibino, Sodegaura, JP;
Kazuki Nishimura, Sodegaura, JP;
Toshinari Ogiwara, Sodegaura, JP;
Kiyoshi Ikeda, Sodegaura, JP;
Tetsuya Inoue, Sodegaura, JP;
Mitsunori Ito, Sodegaura, JP;
Kei Yoshida, Sodegaura, JP;
Kumiko Hibino, Sodegaura, JP;
Kazuki Nishimura, Sodegaura, JP;
Toshinari Ogiwara, Sodegaura, JP;
Kiyoshi Ikeda, Sodegaura, JP;
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Abstract
A biscarbazole derivative of the invention is represented by a formula (1A) or (1B) below. In the formula (1A) or (1B): Arepresents a substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; Arepresents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; Xand Xeach are a linking group; Yto Yeach represent a substituent; p and q represent an integer of 1 to 4; and r and s represent an integer of 1 to 3.