C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
C03B 37/14 (2006.01) C03B 37/018 (2006.01)
Patent
CA 2118351
A method for making a glass preform substantially free of OH impurities is disclosed. The method comprises the steps of introducing a moving stream of a vapor mixture including at least one compound glass-forming precursor together with anoxidizing medium into a tube, while generating a hydrogen-free isothermal plasma on an outer surface of the tube to react the mixture and produce a glassy deposit on an inner surface of the tube.
Partus Fred Paul
Thomas Gordon Albert
American Telephone And Telegraph Company
Kirby Eades Gale Baker
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