Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Reexamination Certificate
2004-02-25
2008-10-28
Menon, Krishnan S (Department: 1797)
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
C210S634000, C210S771000, C514S021800, C530S382000, C530S412000, C530S414000, C530S418000, C530S421000, C435S002000, C424S530000
Reexamination Certificate
active
07442308
ABSTRACT:
A process for removing viruses in fibrinogen solutions and fibrinogen obtained thereof wherein the process starts with an adjusted purified fibrinogen solution, the adjusted purified solution is frozen and then thawed at a temperature between 5 and 20° C., the undissolved materials associated with the fibrinogen are subsequently separated, the temperature is adjusted and the resultant solution is finally subjected to nanofiltration using filters having a pore size smaller than 35 nm.
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Fernandez Rodriguez Jesus
Ristol Debart Pere
Darby & Darby P.C.
Grifols, S.A.
Menon Krishnan S
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