US 11,078,137 B1Granted

Sustainable terpene extraction method

AssigneeBuddies IP Holding, Inc.

InventorsStephen Carlson, James Stegall, Michael Cook, Donny Jones

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Abstract

The method begins with an oil which in one embodiment is cannabis crude oil derived from a cannabis plant. Oil is placed within a container having an open upper portion and with the oil preferably only filling up less than half of a volume of the container. The container and oil therein are placed within a vacuum oven where the oil is heated over time to a preselected temperature. A vacuum is then drawn on the oil while it is within the oven. Initial vacuum application is carefully applied to avoid the oil boiling over and out of the container. Vacuum residence time continues for a preselected duration, while gaseous terpenes are drawn from the oven toward the source of vacuum, such as a vacuum pump, by way of a cold trap/condenser. This cold trap is sufficiently cold that terpenes are condensed into a liquid form and collected therein.

Claims20

Dependent claims

A method for extraction of terpenes from a cannabis plant, including the steps of:

obtaining cannabis crude oil which originated from a cannabis plant;
placing the cannabis crude oil into a vacuum oven while contained within a container having a volume greater than an amount of cannabis crude oil contained therein;
raising a temperature of the cannabis crude oil to an elevated temperature above a standard atmospheric temperature of 60° F.;
drawing a vacuum on the cannabis crude oil within the vacuum oven at the elevated temperature;
regulating an amount of vacuum drawn on the vacuum oven to keep a surface level of the cannabis crude oil elevated above a starting elevation which existed before the vacuum was drawn on the vacuum oven, and below a top of the container;
orienting a cold trap downstream from the vacuum oven and upstream from a vacuum pump, the cold trap maintaining a temperature sufficiently low that terpenes volatilized from the cannabis crude oil within the vacuum oven are caused to condense within the cold trap;
and
collecting terpene liquids from the cold trap into a terpene product container.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/813,096Filed 9 Mar 2020 · us provisional application
Priority: 8 Mar 2019
Granted: 3 Aug 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

C07C 7/09
Purification; Separation; Use of additives: by fractional condensation
C07C 403/02
Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four…:…
C07B 63/00
Purification
C07C 7/10
Purification; Separation; Use of additives: by extraction, i.e. purification or separation of liquid hydrocarbons with the aid of liquids