Inventor

METCALF DOUGLAS G

US16 patents

⚠️ This page may combine multiple inventors who share the name “METCALF DOUGLAS G”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NATURAL EXTRACTION SYS LLC

14 patents

US10555914B1Feb 11, 2020

Methods of producing anionic cannabinoid molecules dissolved in water

NATURAL EXTRACTION SYS LLC14 citations83

US10610805B1Apr 7, 2020

Methods to separate cannabidiol and tetrahydrocannabinol

NATURAL EXTRACTION SYS LLC7 citations82

US10609944B1Apr 7, 2020

Compositions comprising 2-[(1R,6R)-6-isopropenyl-3-methylcyclohex-2-en-1-yl]-3-hydroxy-5-pentylphenolate and 2-[(1R,6R)-6-isopropenyl-3-methylcyclohex-2-en-1-yl]-5-pentylbenzene-1,3-diol

NATURAL EXTRACTION SYS LLC5 citations82

US10959961B2Mar 30, 2021

Methods of administering anionic cannabinoid molecules dissolved in water

NATURAL EXTRACTION SYS LLC4 citations71

US12484606B2Dec 2, 2025

Compositions and methods related to anionic cannabinoid molecules

NATURAL EXTRACTION SYS LLC0 citations60

US12419855B2Sep 23, 2025

Compositions comprising cannabinoid ions that are dissolved in glycerol

NATURAL EXTRACTION SYS LLC0 citations60

US12161608B2Dec 10, 2024

Methods of preventing and treating health conditions using cannabinoid anions

NATURAL EXTRACTION SYS LLC1 citations60

US11576413B2Feb 14, 2023

Compositions comprising ionized cannabidiol

NATURAL EXTRACTION SYS LLC0 citations60

US12390418B2Aug 19, 2025

Biphasic compositions comprising one or both of carbonate and phosphate

NATURAL EXTRACTION SYS LLC0 citations51

US12391637B2Aug 19, 2025

Methods to separate cannabinoids from impurities by crystallization

NATURAL EXTRACTION SYS LLC0 citations51

US12349706B2Jul 8, 2025

Compositions and methods related to excipients and cannabinoid formulations

NATURAL EXTRACTION SYS LLC0 citations51

US12533324B2Jan 27, 2026

Compositions and methods related to organic oxides

NATURAL EXTRACTION SYS LLC0 citations50

US12409152B2Sep 9, 2025

Compositions and methods related to dissolved oxides

NATURAL EXTRACTION SYS LLC0 citations50

US10864459B2Dec 15, 2020

Methods to produce cannabinoid products from decarboxylated cannabinoid extracts

NATURAL EXTRACTION SYS LLC0 citations50

Convergent Health Sciences LLC

2 patents

US12503713B1Dec 23, 2025

Stabilization of tryptamines by denaturing enzymes, optimizing ionization states, and controlling confounding variables

Convergent Health Sciences LLC0 citations45

US12497637B1Dec 16, 2025

Stabilization of tryptamines by denaturing enzymes, optimizing ionization states, and controlling confounding variables

Convergent Health Sciences LLC0 citations45