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) (1) heavy metal containing (e.g., ga, in or t1, etc.) (40) plural -c(=x)- groups, wherein x is chalcogen, bonded directly to the same non-benzenoid carbons, or the enolate thereof. (e.g., beta-diketone chelates, acetylacetonates, etc.)

Hierarchy/Derived subclasses

556 / 1

-> 40

-> 41

uspto searches

Patent Apps in 556/40

Granted Patents in 556/40

Use the links above or do an advanced search in ppubs for:
(556/40.ccls. or 556/41.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.