US PATENT SUBCLASS 65 / 20
.~.~ Foaming of slag
Current as of: June, 1999
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DEFINITION
Classification: 65/20
(under subclass 19) Processes which include the step of contacting molten slag with a gaseous material thereby forming voids in the slag.
(1) Note. Generally the gaseous material is formed in situ by contacting the molten slag with water.
SEE OR SEARCH THIS CLASS, SUBCLASS:
22, for processes of glass working and/or treating glass combined with the step of producing pores in situ of a glass composition to form a cellular glass product and see the search notes thereunder.
