Corrosion resistant metal article coated with emeraldine base polyaniline
Patent 5824371 Issued on October 20, 1998. Estimated Expiration Date: 
October 20, 2015. 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.
October 20, 2015. 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 ReferencesProtecting carbon steel from corrosion with nonconducting poly(aniline) Patent #: 5441772 InventorsAssigneeApplicationNo. 383346 filed on 02/03/1995US Classes:427/388.1, Metal base427/388.2, Cross-linked or infusible coating428/457Of metalExaminersPrimary: Cain, Edward J.Attorney, Agent or FirmForeign Patent References
International ClassB05D 007/14AbstractThe present invention relates to a corrosion resistant metal article which comprises: (a) a metal body normally prone to corrosion when subjected to potentially corrosive conditions; and (b) a coating of neutral, undoped polyaniline in the emeraldine base form on a portion of the metal body (e.g., a side coating or undercoating) of the neutral, undoped polyaniline in the emeraldine base form on the metal body, where the distance (for example, not more than about one centimeter) between coated and uncoated portions of the metal is effective to protect the uncoated portion of the metal as well as the coated portion.Other References
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