Patents by Inventor Lawerance Lincoln JOHNSON

Lawerance Lincoln JOHNSON has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Isolation and crystallization of cannabinoids without distillation or evaporation of solvents
    Patent number: 11623905
    Abstract: Cannabis plant material is extracted with a solvent matrix consisting of one or more organic solvents and optionally water. The cannabis plant material is agitated in the solvent matrix and then removed by filtration or centrifugation. Following extraction, the plant material is separated from the solvent matrix by centrifugation. The resulting extract is clarified by membrane filtration which also removes most of the water and water-soluble impurities. The resulting extract is dewaxed using membrane filtration and/or liquid-liquid extraction. Excess solvent and terpenoids are removed by means of molecular weight cutoff membrane filtration and the resulting cannabinoid solution is decarboxylated catalytically. Seed crystals are added to crystallize the cannabinoids.
    Type: Grant
    Filed: May 10, 2022
    Date of Patent: April 11, 2023
    Assignee: ENCANN SOLUTIONS INC.
    Inventor: Lawerance Lincoln Johnson
  • Isolation and crystallization of cannabinoids without distillation or evaporation of solvents
    Publication number: 20220371977
    Abstract: Cannabis plant material is extracted with a solvent matrix consisting of one or more organic solvents and optionally water. The cannabis plant material is agitated in the solvent matrix and then removed by filtration or centrifugation. Following extraction, the plant material is separated from the solvent matrix by centrifugation. The resulting extract is clarified by membrane filtration which also removes most of the water and water-soluble impurities. The resulting extract is dewaxed using membrane filtration and/or liquid-liquid extraction. Excess solvent and terpenoids are removed by means of molecular weight cutoff membrane filtration and the resulting cannabinoid solution is decarboxylated catalytically. Seed crystals are added to crystallize the cannabinoids.
    Type: Application
    Filed: May 10, 2022
    Publication date: November 24, 2022
    Inventor: Lawerance Lincoln JOHNSON