US PATENT SUBCLASS 521 / 128
.~.~.~ Ingredient is a nitrogen containing compound

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}
128.~.~.~ Ingredient is a nitrogen containing compound {1}
129  DF  .~.~.~.~> Nitrogen compound contains a nitrogen atom bonded to three carbon atoms and wherein none of the carbon atoms are double-bonded to oxygen

DEFINITION

Classification: 521/128

Ingredient is a nitrogen containing compound:

(under subclass 99) Subject matter wherein the stated ingredient is a nitrogen containing compound.

SEE OR SEARCH THIS CLASS, SUBCLASS:

133, for the use of nitrogen gas as a stated ingredient.