Method of preparing delta-9-tetrahydrocannabinol
Patent 6730519 Issued on May 4, 2004. Estimated Expiration Date: 
December 4, 2021. 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 4, 2021. 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. 10006264 filed on 12/04/2001US Classes:436/161, INCLUDING CHROMATOGRAPHY436/93, Hetero-O (e.g., ascorbic acid, etc.)436/177, Liberation or purification of sample or separation of material from a sample (e.g., filtering, centrifuging, etc.)436/178, Including use of a solid sorbent, semipermeable membrane, or liquid extraction436/901, DRUGS OF ABUSE (E.G., NARCOTICS, AMPHETAMINE, ETC.)514/454, Tricyclo ring system having the hetero ring as one of the cyclos549/388The tricyclo ring system consists of three six-membered cyclos (e.g., xanthene, etc.)ExaminersPrimary: Ludlow, JanAttorney, Agent or FirmForeign Patent References
International ClassG01N 3002AbstractA method for the isolation of delta-9-tetrahydrocannibinol (THC) from, Cannabis plant material, wherein delta-9-THC Acid and THC are separately obtained including the steps of extracting the Cannabis plant material, chelating delta-9-THC acid on alumina solid support from cannabis extracts rich in the acid washing of non-acid components of the extract with organic solvents and eluting of the delta-9-THC acid with strong polar solvents.Other References
Field of SearchLiberation or purification of sample or separation of material from a sample (e.g., filtering, centrifuging, etc.)Including use of a solid sorbent, semipermeable membrane, or liquid extraction INCLUDING CHROMATOGRAPHY Hetero-O (e.g., ascorbic acid, etc.) DRUGS OF ABUSE (E.G., NARCOTICS, AMPHETAMINE, ETC.) Tricyclo ring system having the hetero ring as one of the cyclos The tricyclo ring system consists of three six-membered cyclos (e.g., xanthene, etc.) |
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