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:
Jul. 31, 2012
Filed:
Sep. 05, 2008
Masafumi Ohta, Susono, JP;
Tomoyuki Shimada, Shizuoka, JP;
Yuuji Tanaka, Fujinomiya, JP;
Eiji Kurimoto, Numazu, JP;
Keisuke Shimoyama, Numazu, JP;
Masafumi Ohta, Susono, JP;
Tomoyuki Shimada, Shizuoka, JP;
Yuuji Tanaka, Fujinomiya, JP;
Eiji Kurimoto, Numazu, JP;
Keisuke Shimoyama, Numazu, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
The present invention provides a naphthalenetetracarboxylic acid diimide derivative represented by the following general formula (1): wherein Rand R, which are identical or different, each represent a substituted or non-substituted alkyl group or a substituted or non-substituted aromatic hydrocarbon group; Rrepresents an alkyl group having 1 to 8 carbon atoms or an aromatic hydrocarbon group; R, R, Rand R, which are identical or different, each represent a hydrogen atom, a substituted or non-substituted alkyl group, or a substituted or non-substituted aromatic hydrocarbon group; and Rand Rmay be linked to form a substituted or non-substituted heterocyclic group including a nitrogen atom; with compounds where all of R, Rand Rare a methyl group, and compounds where both of Rand Rare a methyl group and Ris a 1-octyl group being excluded.