Patents
US 10092852 B2: Method for removing contaminants from cannabinoid distillates
- Granted
- 2018-10-09
- Filed
- 2018-03-27 application 15937789
- Type
- Utility · 8 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A method for removing contaminants such as pesticides and fungicides from cannabinoid extracts. Cannabinoid extracts containing contaminants may be dissolved in a water and ethanol solution, and then cooled to allow water-soluble contaminants to settle out of the mixture. The water and ethanol may then be removed via evaporation or distillation, leaving purified cannabinoids without contaminants. Contaminant removal may be incorporated into a method for producing a blended extract of cannabinoids and terpenes, which extracts terpenes using supercritical CO2, and extracts a cannabinoid concentrate from the residual material using a cold ethanol flush followed by distillation and then by contaminant removal; the CO2-extracted terpenes are then added back to the purified cannabinoid concentrate in a final blending step. Blending terpenes at the end of extraction may enhance the flavor and effectiveness of the purified cannabinoid concentrate.
Source: PVGPATDIS, file of 2026-04-10 (ipg181009.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| METAMORPHIC ALCHEMY & DISTILLATIONS, Inc. 3 patents | US company or organization | Hayfork, CA | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Gary D. Tucker, II | Hayfork, CA | 8 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B01D | Separation | B01D3/36 | PVGPATDIS, file of 2026-04-10 |
| A23L | Foods, foodstuffs or non-alcoholic beverages, not otherwise provided for; preparation or treatment thereof | A23L33/105 | PVGPATDIS, file of 2026-04-10 |
| A61K | Preparations for medical, dental or toiletry purposes | A61K2236/30 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2020-12-11 | Assignment Assignment of assignor's interest | TUCKER, GARY signed 2020-11-05 | THE HOUSE OF GREEN ST. PETER PORT | 54622/807 | PASDL, file of 2026-10-15 |
| 2019-08-22 | Assignment Assignment of assignor's interest | METAMORPHIC ALCHEMY & DISTILLATIONS, INC. signed 2019-08-20 | TUCKER, GARY HAYFORK, CA | 50141/87 | PASDL, file of 2026-10-15 |
| 2018-03-28 | Assignment Assignment of assignor's interest | TUCKER, GARY signed 2017-08-28 | METAMORPHIC ALCHEMY & DISTILLATIONS, INC. HAYFORK, CA | 45379/340 | PASDL, file of 2026-10-15 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.