Gas separation: processes – Selective diffusion of gases – Selective diffusion of gases through substantially solid...
Reexamination Certificate
2007-08-28
2007-08-28
Lawrence, Frank M. (Department: 1724)
Gas separation: processes
Selective diffusion of gases
Selective diffusion of gases through substantially solid...
C095S053000, C095S233000, C065S454000
Reexamination Certificate
active
10833216
ABSTRACT:
Methods for recovering and recycling helium and unreacted chlorine from a process for manufacturing optical fiber are disclosed. Helium-rich and chlorine-rich gas streams are recovered from the consolidation furnace and separated. The helium-rich stream is dried and blended with make-up helium and the chlorine-rich stream is purified and blended with make-up chlorine so that each may be reused in the optical fiber production process.
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Lawrence Frank M.
Neida Philip H. Von
The BOC Group Inc.
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