US PATENT SUBCLASS 501 / 149
.~.~.~ Water pretreatment

Current as of: June, 1999
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501 /   HD   COMPOSITIONS: CERAMIC

1  DF  CERAMIC COMPOSITIONS {15}
141  DF  .~ Clay containing (e.g., porcelain, earthenware, etc.) {3}
145  DF  .~.~ Clay pretreatment {3}
149.~.~.~ Water pretreatment

DEFINITION

Classification: 501/149

Water pretreatment:

(under subclass 145) Subject matter wherein the clay is treated with water which does not contain a chemical treating agent.

(1) Note. Such treatment may take place at other than ambient temperature and/or pressure.