P-amino substituted tetraphenylthiophenes and electrophotographic photoreceptors containing them
Patent 5023343 Issued on June 11, 1991. Estimated Expiration Date: 
July 16, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 16, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.InventorsAssigneeApplicationNo. 553014 filed on 07/16/1990US Classes:549/74, Nitrogen attached indirectly to the hetero ring by nonionic bonding549/75, Chalcogen attached indirectly to the hetero ring by nonionic bonding549/77Unsaturated carbocyclic ring or acyclic carbon to carbon unsaturation containingExaminersPrimary: Siegel, AlanAttorney, Agent or FirmForeign Patent References
International ClassesC07D 333/12C07D 333/22 Foreign Application Priority Data1987-11-17 JPAbstractThere are here provided a novel tetraphenylthiophene derivative represented by the general formula ##STR1## wherein AM is a tertiary amino group, each of l, m and n is the integer 0 or 1 and lࣙmࣙn are useful as the charge-transporting material in an electrophotographic photoreceptor having an electrically conductive base and a photosensitive layer thereon containing a charge-transporting material and a charge-generating material, which preferably is an azo compound.Field of SearchNitrogen attached indirectly to the hetero ring by nonionic bondingChalcogen attached indirectly to the hetero ring by nonionic bonding Unsaturated carbocyclic ring or acyclic carbon to carbon unsaturation containing Unsaturated carbocyclic ring or acyclic carbon to carbon unsaturation containing |
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