Transdermal delivery of pharmaceuticals
Patent 4992445 Issued on February 12, 1991. Estimated Expiration Date: 
December 12, 2008. 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.
December 12, 2008. 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.InventorsAssigneeApplicationNo. 283204 filed on 12/12/1988US Classes:514/279Polycyclo ring system having the six-membered hetero ring as one of the cyclosExaminersPrimary: Friedman, Stanley J.Attorney, Agent or FirmInternational ClassA61K 031/44AbstractCompositions and methods for the transdermal delivery of pharmacologically active chiral compounds are described which are based on the use of enantiomers or mixtures that contain a disproportionate amount of the enantiomers. | |
