Compositions and method comprising heterocyclic compounds containing two heteroatoms
Patent 4876249 Issued on October 24, 1989. Estimated Expiration Date: 
January 12, 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.
January 12, 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 ReferencesTopical anti-inflammatory drug therapy Topical anti-inflammatory drug therapy Patent #: 4473565 InventorApplicationNo. 002387 filed on 01/12/1987US Classes:514/174-O-C-O- is part of a hetero ring (e.g., acetonide, etc.)ExaminersPrimary: Friedman, Stanley J.Attorney, Agent or FirmInternational ClassA61K 031/58AbstractA method and compositions for topically administering physiologically active agents through the skin and mucous membranes of humans and animals in a transdermal device or formulation for systemic use or to the skin of humans and animals for localized use comprising applying to such skin or membrane a mixture of said physiologically active agent and a non-toxic, effective penetrating amount of penetration enhancing compound having the structural formula I: ##STR1## wherein: R is a saturated or unsaturated hydrocarbon group with from 5 to 19 carbon atoms; R' and R" are hydrogen, lower alkyl, trifluoromethyl, lower hydroxyalkyl or lower alkyl ester of lower hydroxyalkyl, with the proviso that both R' and R" are not lower hydroxyalkyl; X is O or NR1 ; R1 being hydrogen, lower alkyl, lower alkenyl, lower hydroxyalkyl or lower alkyl ester of lower hydroxyalkyl are disclosed.Field of Search-O-C-O- is part of a hetero ring (e.g., acetonide, etc.) | |
