.~ Process of manufacturing optical fibers, waveguides, or preforms thereof {29}
429
.~.~ With etching or leaching
DEFINITION
Classification: 65/429
With etching or leaching:
(under subclass 385) Processes wherein a chemical reagent is used to remove only a portion or constituent of the optical fiber, waveguide, preform, or coating thereon.
(1) Note. The chemical material or reagent usually referred to in this art is an etching material or etchant.
SEE OR SEARCH THIS CLASS, SUBCLASS:
31, for processes in which a chemical reagent is used to remove a portion or constituent of glass other than fibers, filaments, waveguides, or preforms.
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.
