US PATENT SUBCLASS 521 / 100
.~.~.~ Ingredient is water settable inorganic composition

Current as of: June, 1999
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521 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {3}
50  DF  .~ CELLULAR PRODUCTS OR PROCESSES OF PREPARING A CELLULAR PRODUCT, E.G., FOAMS, PORES, CHANNELS, ETC. {27}
99  DF  .~.~ Cellular product formation prior to or during solid polymer formation in the presence of a stated ingredient other than water {18}
100.~.~.~ Ingredient is water settable inorganic composition

DEFINITION

Classification: 521/100

Ingredient is water settable inorganic composition:

(under subclass 99) Subject matter wherein the stated ingredient contains an inorganic material hardenable by hydration so to produce a solid mass, e.g., cement, concrete, plaster of Paris, etc.

(1) Note. This subclass includes systems having cement, concrete, plaster of Paris in any stage of cure.

(2) Note. The water settable ingredient can be present for any purpose.

(3) Note. If any doubt exists in a claim as to whether an inorganic ingredient is water settable, such doubt should be resolved by classifying the claim into the appropriate subclass below.