USPC Class Details

Description: 544 organic compounds -- part of the class 532-570 series / 544 organic compounds -- part of the class 532-570 series/() organic compounds (class 532, subclass 1) () heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen as the only ring hetero atoms (class 540, subclass 1) (1) hetero ring is six-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazines, etc.) (180) triazines (194) substituent nitrogen bonded directly to carbon of the triazine ring (196) three substituent nitrogens bonded directly to the three carbons of the triazine ring (200) melamine per se, or salt thereof (201) processes utilizing urea or biuret reactant

Hierarchy/Derived subclasses

544 / 1-> 180-> 194-> 196-> 200-> 201

uspto searches

Patent Apps in 544/201

Granted Patents in 544/201

Use the links above or do an advanced search in ppubs for:
(544/201.ccls.)

This will show what classes derive from the input. Ex: entering 43/42.24 shows the derived classes and the search that can be used to find patents or patent applications in those subclasses.
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