Inventor · disambiguated record
Douglas G. Metcalf
Also filed as: METCALF DOUGLAS G
15 granted patents·14 pending applications·31 citations·filing 2019–2025
88Inventor score
Files withNATURAL EXTRACTION SYS LLC23METCALF DOUGLAS G3Convergent Health Sciences LLC2WAGNER ROBERT C1
Top patents by PatentIndex Score
29 records- 0193US10555914B1Methods of producing anionic cannabinoid molecules dissolved in waterNATURAL EXTRACTION SYS LLC·Filed 2019·Granted Feb 11, 2020·14 cites·16 claims
- 0292US10609944B1Compositions 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-diolNATURAL EXTRACTION SYS LLC·Filed 2019·Granted Apr 7, 2020·5 cites·18 claims
- 0391US10610805B1Methods to separate cannabidiol and tetrahydrocannabinolNATURAL EXTRACTION SYS LLC·Filed 2019·Granted Apr 7, 2020·7 cites·20 claims
- 0487US10959961B2Methods of administering anionic cannabinoid molecules dissolved in waterNATURAL EXTRACTION SYS LLC·Filed 2019·Granted Mar 30, 2021·4 cites·20 claims
- 0581US2025368594A1Compositions and methods to separate cannabinoids from impurities by crystallizationNATURAL EXTRACTION SYS LLC·Filed 2025·Application pending·0 cites
- 0680US12161608B2Methods of preventing and treating health conditions using cannabinoid anionsNATURAL EXTRACTION SYS LLC·Filed 2020·Granted Dec 10, 2024·1 cites·20 claims
- 0770US10864459B2Methods to produce cannabinoid products from decarboxylated cannabinoid extractsNATURAL EXTRACTION SYS LLC·Filed 2019·Granted Dec 15, 2020·0 cites·20 claims
- 0868US12484606B2Compositions and methods related to anionic cannabinoid moleculesNATURAL EXTRACTION SYS LLC·Filed 2019·Granted Dec 2, 2025·0 cites·19 claims
- 0965US12391637B2Methods to separate cannabinoids from impurities by crystallizationNATURAL EXTRACTION SYS LLC·Filed 2020·Granted Aug 19, 2025·0 cites·20 claims
- 1065US2022023773A1Compositions comprising 2-[(1r,6r)-6-isopropenyl-3-methylcyclohex-2-en-1-yl]-3-hydroxy-5-pentylphenolateWAGNER ROBERT C·Filed 2019·Application pending·0 cites
- 1164US12419855B2Compositions comprising cannabinoid ions that are dissolved in glycerolNATURAL EXTRACTION SYS LLC·Filed 2020·Granted Sep 23, 2025·0 cites·20 claims
- 1263US12349706B2Compositions and methods related to excipients and cannabinoid formulationsNATURAL EXTRACTION SYS LLC·Filed 2021·Granted Jul 8, 2025·0 cites·18 claims
- 1362US2022015397A1Compositions with novel cannabinoid and terpene profilesNATURAL EXTRACTION SYS LLC·Filed 2019·Application pending·0 cites
- 1461US11576413B2Compositions comprising ionized cannabidiolNATURAL EXTRACTION SYS LLC·Filed 2020·Granted Feb 14, 2023·0 cites·20 claims
- 1559US12390418B2Biphasic compositions comprising one or both of carbonate and phosphateNATURAL EXTRACTION SYS LLC·Filed 2022·Granted Aug 19, 2025·0 cites·9 claims
- 1659US2024338785A1Methods to defend against judicial exceptions to the patent act and intellectual property derived therefromMETCALF DOUGLAS G·Filed 2024·Application pending·0 cites
- 1759US2021212963A1Methods of administering anionic cannabinoids dissolved in waterNATURAL EXTRACTION SYS LLC·Filed 2021·Application pending·0 cites
- 1856US2024131040A1Compositions and methods related to cannabinoid anionsNATURAL EXTRACTION SYS LLC·Filed 2022·Application pending·0 cites
- 1955US2024315965A1Compositions and methods related to pharmaceutical excipientsNATURAL EXTRACTION SYS LLC·Filed 2022·Application pending·0 cites
- 2052US2024087065A1Methods to Provide and Market Legal Services Including Innovative Patent Prosecution StrategiesMETCALF DOUGLAS G·Filed 2022·Application pending·0 cites
- 2151US2023073802A1Compositions and methods related to cannabinoid anionsNATURAL EXTRACTION SYS LLC·Filed 2021·Application pending·0 cites
- 2251US2023077014A1Compositions and methods related to pharmaceutical excipientsNATURAL EXTRACTION SYS LLC·Filed 2021·Application pending·0 cites
- 2351US2023089351A1Methods related to bioactive agents that convert from anions to moleculesNATURAL EXTRACTION SYS LLC·Filed 2021·Application pending·0 cites
- 2450US12409152B2Compositions and methods related to dissolved oxidesNATURAL EXTRACTION SYS LLC·Filed 2020·Granted Sep 9, 2025·0 cites·10 claims
- 2550US2022387376A1Compositions Comprising Cannabinoid Molecules that are Dissolved in Water-Miscible SolventsNATURAL EXTRACTION SYS LLC·Filed 2020·Application pending·0 cites
- 2649US12503713B1Stabilization of tryptamines by denaturing enzymes, optimizing ionization states, and controlling confounding variablesConvergent Health Sciences LLC·Filed 2025·Granted Dec 23, 2025·0 cites·12 claims
- 2749US2022233404A1Containers, compositions, and methods related to cannabinoid anionsNATURAL EXTRACTION SYS LLC·Filed 2020·Application pending·0 cites
- 2848US12497637B1Stabilization of tryptamines by denaturing enzymes, optimizing ionization states, and controlling confounding variablesConvergent Health Sciences LLC·Filed 2025·Granted Dec 16, 2025·0 cites·19 claims
- 2948US2021330901A1Systems and Methods to Administer PharmaceuticalsMETCALF DOUGLAS G·Filed 2019·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →