F 16. ParC s claims I and 10 are representative of the parties' subject matter as claimed by Pare
(paragraphing added):
I . In a method for the microwave extraction
of at least one natural product
from a biological material,
said method consisting in:
placing said biological material in an enclosure
without any solvent,
making said biological material present in said enclosure undergo
microwave irradiation
in order to prompt the evaporation of at least a part of
the water contained in said biological
material,
so as to enable the release of at least a part of said natural
product,
separating the residual biological material from the extracted natural
product,
the improvement wherein said method includes the steps of
cyclically intermittently applying reduced pressure
within said enclosure
during said step for the application of microwaves,
heating said enclosure
during at least the essential part of said step for the
application of microwaves,
the combination of said steps for the application of the microwaves,
the application of reduced pressure within the enclosure and
the heating of the enclosure permitting the volatilization of
said natural product from said biological material.
10. A method of microwave extraction
of at least a natural product
from a biological material containing volatilizable components,
comprising
providing a matrix of biological material
having volatilizable components dispersed therein,
treating said matrix with microwave energy
to effect volatilization of at least one of the volatilizable
components from the biological material,
cyclically intermittently applying reduced pressure during the
microwave treatment, and
separating at least one volatilized component
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