US PATENT SUBCLASS 65 / 474
.~ With purifying or homogenizing molten glass (e.g., removing bubbles, etc.)


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

376  DF  PROCESSES OF MANUFACTURING FIBERS, FILAMENTS, OR PREFORMS {18}
474.~ With purifying or homogenizing molten glass (e.g., removing bubbles, etc.)


DEFINITION

Classification: 65/474

With purifying or homogenizing molten glass (e.g., removing bubbles, etc.):

(under subclass 376) Processes including a step of treating molten stock material by (a) removing foreign or objectionable material or (b) making a melt uniform in physical characteristics or in composition throughout.

(1) Note. Processes of removing undissolved batch materials or gaseous impurities are properly classified here.