US PATENT SUBCLASS 65 / 134.4
.~.~ Oxygen enriched or nitrogen reduced gas utilized (i.e., modified air)

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

17.1  DF  PROCESSES {32}
134.1  DF  .~ Fining or homogenizing molten glass {13}
134.4.~.~ Oxygen enriched or nitrogen reduced gas utilized (i.e., modified air)

DEFINITION

Classification: 65/134.4

Oxygen enriched or nitrogen reduced gas utilized (i.e., modified air):

(under subclass 134.1) Processes wherein atmospheric gas (air) has additional oxygen added or nitrogen partially or completely removed is used in fining or homogenizing the molten glass.