Nasal delivery of caffeine
Patent 4778810 Issued on October 18, 1988. Estimated Expiration Date: 
January 8, 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 8, 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.InventorsApplicationNo. 07/001340 filed on 01/08/1987US Classes:514/263.34Chalcogen bonded directly to the 2-and 6- positions of the purine ring system (e.g., theophylline, etc.)ExaminersPrimary: Friedman, Stanley J.Attorney, Agent or FirmInternational ClassesA61K 9/00 (20060101)A61K 31/52 (20060101) A61K 31/519 (20060101) AbstractNasal compositions useful for the delivery of caffeine alone or with other therapeutic agents.Other References
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