Lubricants for magnetic media
Patent 5128216 Issued on July 7, 1992. Estimated Expiration Date: 
June 26, 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.
June 26, 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.Patent References Re33273 3316330 Method of modifying membrane surface with oriented monolayers of amphiphilic compounds Polyphosphazene magnetic tape lube Magnetic recording medium Magnetic recording medium and process for the preparation of the same Synthetic lubricant for lubricating thin film and magnetic recording medium Patent #: 4871625 InventorAssigneeApplicationNo. 543698 filed on 06/26/1990US Classes:428/835.7, Fluorocarbon252/62.54, Synthetic resin428/900, MAGNETIC FEATURE558/80And nitrogen in the ringExaminersPrimary: Cashion, Merrell C. Jr.Assistant: Resan, Stevan A. Attorney, Agent or FirmInternational ClassG11B 005/00AbstractAmphiphilic compound having one of the following structures:(X--T)n --A--Ym and (X-T)n --R--(T--A)nwherein X is a fluorocarbon terminal group, T is a polar linking group, A is a nucleus other than saturated lower aliphatic, Y is a polar nonlinking group, R is a saturated or unsaturated, substituted or unsubstituted, straight or branched lower aliphatic group, n is at least one, and the sum of n and m is at least two. Such compounds are useful as lubricants for magnetic media. Also, a lubricated magnetic medium comprising a planar, polar surface covered with a monolayer comprising a compound having the structure described above, except that A can also be a saturated lower aliphatic group.Other References
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