Process for purifying and reusing solvent used to remove...

Details Process for purifying and reusing solvent used to remove... Process for purifying and reusing solvent used to remove...

2006-04-04

2006-04-04

Cain, Edward J. (Department: 1714)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

C528S495000

Reexamination Certificate

active

07022813

ABSTRACT:
A process for treating biomedical devices, especially contact lenses, involves contacting polymeric devices containing extractables with a solvent that dissolves and thereby removes the extractables from the device, treating the solvent to remove extractables from the solvent, thereby purifying the solvent, and using the purified solvent to remove additional extractables from polymeric devices.

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