US PATENT SUBCLASS 521 / 101
.~.~.~ Ingredient is bituminous or asphaltic material

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}
101.~.~.~ Ingredient is bituminous or asphaltic material

DEFINITION

Classification: 521/101

Ingredient is bituminous or asphaltic material:

(under subclass 99) Subject matter wherein the stated ingredient contains an asphaltic or bituminous material.

(1) Note. Asphaltic or bituminous refers to solid or semi-solid materials which are often black or dark brown and which occur naturally, or are obtained by refining petroleum, or are the components of coal which are soluble in organic solvents.

(2) Note. As used herein the terms asphaltic or bituminous include asphalt, asphaltides, asphaltic pyrobitumens, ozokerite, earth pitch, mineral pitch, petroleum asphalt, gilsonite, etc.