Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Reexamination Certificate
2005-03-01
2005-03-01
Drodge, Joseph (Department: 1723)
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
C210S136000, C210S194000, C210S511000, C210S774000, C210S805000, C554S012000, C554S014000
Reexamination Certificate
active
06860998
ABSTRACT:
The invention relates to a process for extracting fixed and mineral oils, and/or essential oils, from materials using a process of solvent extraction which is performed under pressure. The solvent is iodotrifluoromethane or iodotrifluoromethane in combination with a co-solvent. The invention also relates to an apparatus for performing the extraction of fixed and mineral oils, and/or essential oils. Substantial reductions in or elimination of the normally high latent heat of solvent evaporation may also be achieved simply by raising or lowering the temperature of or simply by adding or removing “sensible” heat from the solvent at appropriate points during its re-circulation.
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patent: 5892136 (1999-04-01), Nagasaki et al.
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patent: 0 616 821 (2001-10-01), None
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patent: WO 9526794 (1995-10-01), None
patent: WO 0043471 (2000-07-01), None
Drodge Joseph
Naturol Limited
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