Antimycotic nail varnish
Patent 4957730 Issued on September 18, 1990. Estimated Expiration Date: 
September 18, 2007. 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.
September 18, 2007. 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 2752356 3269904 3883545 Process for the manufacture of 1-hydroxy-2-pyridones Pyridones as antidandruff agents Method of treating psoriasis of the nails and composition Patent #: 4250164 InventorsApplicationNo. 942699 filed on 12/17/1986US Classes:424/61, MANICURE OR PEDICURE COMPOSITIONS514/345, Chalcogen bonded directly to ring carbon of the six-membered hetero ring546/290Chalcogen bonded directly to ring carbon of the six-membered hetero ringExaminersPrimary: Rollins, John W.Assistant: Catchpole, W. Attorney, Agent or FirmForeign Patent References
International ClassA61K 007/043Foreign Application Priority Data1985-12-19 DEAbstractA nail varnish comprising a water-insoluble film-forming substance and an antimycotic compound which is a 1-hydroxy-2-pyridone I of the general formula ##STR1## in which R1 is a hydrocarbon group which contains from 6 to 9 carbon atoms, but is free from olefinic and acetylenic bonds, one of the groups R2 and R4 is hydrogen and the other is hydrogen, methyl or ethyl and R3 is alkyl having up to two carbon atoms, said antimycotic ingredient being present in free form or in the form of a salt.Other References
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