US PATENT SUBCLASS 65 / 427
.~.~ Consolidating preform (e.g., sintering, etc.)

Current as of: June, 1999
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65 /   HD   GLASS MANUFACTURING

376  DF  PROCESSES OF MANUFACTURING FIBERS, FILAMENTS, OR PREFORMS {18}
385  DF  .~ Process of manufacturing optical fibers, waveguides, or preforms thereof {29}
427.~.~ Consolidating preform (e.g., sintering, etc.) {1}
428  DF  .~.~.~> Collapsing tube

DEFINITION

Classification: 65/427

Consolidating preform (e.g., sintering, etc.):

(under subclass 385) Processes wherein a porous preform is densified.

(1) Note. Processes wherein porous or tubular preforms are consolidated into solid rods which are used to make optical fibers or waveguides are found in this and indented subclasses.