USPC Class Details – HistoricIP

Description: 556 organic compounds -- part of the class 532-570 series / 556 organic compounds -- part of the class 532-570 series/() organic compounds (class 532, subclass 1) (400) silicon containing (413) nitrogen attached indirectly to silicon by nonionic bonding (415) the nitrogen is in a cyano group (i.e., -cn)

Hierarchy/Derived subclasses

556 / 400	-> 413	-> 415	-> 416
			-> 417

uspto searches

Patent Apps in 556/415

Granted Patents in 556/415

Use the links above or do an advanced search in ppubs for:
(556/415.ccls. or 556/416.ccls. or 556/417.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.