US PATENT SUBCLASS 210 / 903
.~ Nitrogenous

Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

902  DF  MATERIALS REMOVED {7}
903.~ Nitrogenous {2}
904  DF  .~.~> -CN containing
905  DF  .~.~> Protein

DEFINITION

Classification: 210/903

Nitrogenous:

Collection of disclosures under collection 902 in which the material is or contains nitrogen. The material may be organic (e.g, amines) or inorganic (e.g., nitrates).