US PATENT SUBCLASS 428 / 70
.~ Encased layer derived from inorganic settable ingredient

Current as of: June, 1999
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428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

68  DF  SHEET INCLUDING COVER OR CASING {6}
70.~ Encased layer derived from inorganic settable ingredient

DEFINITION

Classification: 428/70

(under subclass 68) Product wherein an enclosed sheet comprises inorganic material which has been set to a solid product by hydration.

(1) Note. Examples of settable inorganic materials are portland cement, gypsum, plaster of paris, etc.

SEE OR SEARCH CLASS

106, Composition: Coating or Plastic,

638+, for compositions containing ingredients which set up or solidify by hydration.