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1. IN562/DELNP/2005 - A METHOD OF EXTRACTING CANNABINOIDS FROM PLANT MATERIAL

Office India
Application Number 562/DELNP/2005
Application Date 14.02.2005
Publication Number 562/DELNP/2005
Publication Date 16.01.2009
Grant Number 242112
Grant Date 13.08.2010
Publication Kind B
IPC
A61K 35/78
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
35Medicinal preparations containing materials or reaction products thereof with undetermined constitution
78Materials from plants
Applicants GW PHARMA LIMITED
Inventors BRIAN ANTHONY WHITTLE
COLIN A. HILL
IAN R. FLOCKHART
DAVID VICTOR DOWNS
PETER GIBSON
GARY WILLIAM SHEATLEY
Priority Data 0218901.7 14.08.2002 GB
10218972 14.08.2002 US
Title
(EN) A METHOD OF EXTRACTING CANNABINOIDS FROM PLANT MATERIAL
Abstract
(EN)
A method of extracting cannabinoids from plant material comprising a decarboxylation step, an extraction with liquid carbon dioxide (CO2), and a step to reduce the proportion of non-target materials in the extract, characterised in that the extraction with liquid CO2 is conducted under sub-critical conditions at a temperature in the range of from 5 to 15°C and a pressure in the range of from 50 to 70 bar, wherein the plant material comprises a plant or plant port, bark, wood, leaves, stems, roots, flowers, fruits, seeds, berries, exudates, botanical raw materials or parts thereof and the non target materials comprise any materials derived from the starting plant material that are not desired to be present in the final extract, the decarboxylation step is carried out after extraction with liquid CO2 , or prior to extraction with liquid CO2.

Also published as
MXPA/a/2005/001621
PL375357
PLP.375357
PLP.388837
ZA200501169