.~ Process of manufacturing optical fibers, waveguides, or preforms thereof {29}
389
.~.~ Nonoxygen chalcogenide glass containing
DEFINITION
Classification: 65/389
Nonoxygen chalcogenide glass containing:
(under subclass 385) Processes wherein a major component of the optical fiber, waveguide, or preform glass composition is a chalcogen containing compound (i.e., compounds of sulfur, selenium, or tellurium) devoid of oxygen.
(1) Note. Placement of nonoxygen chalcogenide documents containing a mere presence of oxygen wherein that oxygen inclusion is considered accidental or unintentional are found in this subclass.
