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:
Oct. 13, 2020
Filed:
Mar. 29, 2012
Tetsu Kitamura, Kanagawa, JP;
Kousuke Watanabe, Kanagawa, JP;
Tetsu Kitamura, Kanagawa, JP;
Kousuke Watanabe, Kanagawa, JP;
UDC IRELAND LIMITED, Dublin, IE;
Abstract
[This] charge transport material which comprises a compound expressed by the following formula has a high efficiency and drive durability after high-temperature storage and resists the occurrence of dark spots (Xrepresents a sulfur atom or an oxygen atom; Rand Rrepresent each independently an alkyl group, an aryl group, a heteroaryl group, a fluorine atom, or a silyl group, and may further be substituted with these groups; n101 represents an integer from 0 to 11; n102 represents an integer from 0 to 7; a plurality of Rand R[groups] may be the same or different; and Lrepresents a single bond or a divalent linking group; however, one of R, L, and Rincludes a fluorine atom, a fluoroalkyl group, a cycloalkyl group, a cycloalkylene group, a silyl group, an alkylsilyl group, an arylsilyl group, or a silicon atom linking group.)