Cannabinoid patch and method for cannabis transdermal delivery
Patent 6113940 Issued on September 5, 2000. Estimated Expiration Date: 
March 3, 2018. 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.
March 3, 2018. 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 ReferencesNovel transdermal nicotine patch Prolonged activity nicotine patch Method and therapeutic system for smoking cessation Compositions for applying active substances to or through the skin Patent #: 5540934 InventorsApplicationNo. 056848 filed on 03/03/1998US Classes:424/449, Transdermal or percutaneous424/448Pressure sensitive adhesive meansExaminersPrimary: Page, Thurman K.Assistant: Howard, S. Attorney, Agent or FirmInternational ClassesA61F 013/02A61L 015/16 AbstractA transdermal structure is provided for delivering cannabis chemical(s) to one's bloodstream. The structure comprises a backing layer which carries the cannabis chemical(s). The chemicals are contained in a film on the backing layer or within a cavity formed in the backing layer. Alternatively, an opening in a secondary layer that overlies the backing layer may be used to create the cavity. The structure is applied to one's skin so that the cannabis chemicals are in contact with the skin. A polymer material which is mixed with the cannabis and placed in the cavity or a membrane over the cavity may be used to control the flow of cannabis chemical(s) into the bloodstream. In an alternative embodiment, a porous material impregnated with cannabis chemical(s) may be used to hold the chemical(s) in the cavity.Other References
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