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:
Feb. 22, 2011
Filed:
Mar. 06, 2007
Masaomi Sasaki, Susono, JP;
Masafumi Torii, Yokohama, JP;
Takashi Okada, Yokohama, JP;
Toshiya Sagisaka, Yokohama, JP;
Masaomi Sasaki, Susono, JP;
Masafumi Torii, Yokohama, JP;
Takashi Okada, Yokohama, JP;
Toshiya Sagisaka, Yokohama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
Provided are pi-conjugated polymer materials that are useful for photoelectric transducer elements having high hole transportability and excellent durability, that are useful for light-emitting elements having superior emitting properties and excellent durability, and that are useful for active layers of thin film transistors. The pi-conjugated polymers comprise a constitutional unit expressed by the General Formula (I) or (II): in which, Ar represents an aromatic hydrocarbon group or a heterocyclic group that may have a substituent; R represents a hydrogen atom, an alkyl group or an aromatic hydrocarbon group that may have a substituent; Arrepresents a divalent group of an aromatic hydrocarbon or a heterocycle that may have a substituent; in which, Ar represents an aromatic hydrocarbon group or a heterocyclic group that may have a substituent; R represents a hydrogen atom, an alkyl group or an aromatic hydrocarbon group that may have a substituent.