US PATENT SUBCLASS 65 / 472
.~ With chemical etching or leaching

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

376  DF  PROCESSES OF MANUFACTURING FIBERS, FILAMENTS, OR PREFORMS {18}
472.~ With chemical etching or leaching

DEFINITION

Classification: 65/472

With chemical etching or leaching:

(under subclass 376) Processes wherein a chemical reagent is used to remove a portion or constituent of the fiber, filament, or fiber preform.

SEE OR SEARCH THIS CLASS, SUBCLASS:

31, for processes in which a chemical reagent is used to remove a portion or constituent of glass exclusive of fibers, filaments, or fiber preforms.

429, for processes in which a chemical reagent is used to remove a portion or constituent of an optical fiber, waveguide, or preform.

SEE OR SEARCH CLASS

216, Etching a Substrate: Processes, for methods of etching glass, per se. See the SEARCH CLASS notes thereunder.

427, Coating Processes,

299+, for processes of coating combined with a pretreatment of a base.