USPC Class Details

Description: 423 chemistry of inorganic compounds / 423 chemistry of inorganic compounds/(210) modifying or removing component of normally gaseous mixture (212) mixture is exhaust from internal-combustion engine (213.2) utilizing as solid sorbent, catalyst, or reactant a material containing a transition element (213.7) including successive stage treatments to modify or remove a different component in each stage

Hierarchy/Derived subclasses

423 / 210

-> 212

-> 213.2

-> 213.7

uspto searches

Patent Apps in 423/213.7

Granted Patents in 423/213.7

Use the links above or do an advanced search in ppubs for:
(423/213.7.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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