US PATENT SUBCLASS 65 / 440
.~ Sol-gel route or ion exchange utilized

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

376  DF  PROCESSES OF MANUFACTURING FIBERS, FILAMENTS, OR PREFORMS {18}
440.~ Sol-gel route or ion exchange utilized

DEFINITION

Classification: 65/440

Sol-gel route or ion exchange utilized:

(under subclass 376) Processes wherein (a) a sol-gel route or (b) an exchanging of selected ions is used during any stage of manufacturing or treating the glass fiber, filament or preform.

(1) Note. The sol-gel route process generally includes compositions which have been prepared by a method other than melting having at least one step in which the glass forming ingredients are in a gel or sol state.