Aqueous ink composition
Patent 4666519 Issued on May 19, 1987. Estimated Expiration Date: 
June 26, 2005. 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.
June 26, 2005. 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.Patent ReferencesInventorsAssigneeApplicationNo. 06/749086 filed on 06/26/1985US Classes:106/31.45, The nitrogen is part of a cyano group106/31.43, Organic nitrogen compound containing106/31.44, Anthraquinone attached directly or indirectly to the nitrogen by nonionic bonding106/31.5, Acyclic azo attached directly or indirectly to the heterocyclic ring by nonionic bonding106/31.51, The nitrogen is part of an acyclic azo group106/31.52, Plural acyclic azo group component containing106/31.58Organic oxygen compound containingExaminersPrimary: Yarbrough, Amelia B.Attorney, Agent or FirmInternational ClassesC09D 11/00 (20060101)C09B 69/00 (20060101) C09D 11/16 (20060101) Foreign Application Priority Data1984-06-29 JPAbstractThe present invention provides an aqueous ink composition having water-resistance in written trace or printed image on or after writing down and having good solution stability; which comprises as a coloring agent a reaction mixture of a dye, an epoxy compound and optionally an amine compound.Other References
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