USPC Class Details

Description: 423 chemistry of inorganic compounds / 423 chemistry of inorganic compounds/(1) treating mixture to obtain metal containing compound (155) alkaline earth metal (mg, ca, sr, or ba) (157) ion exchanging or liquid-liquid extracting

Hierarchy/Derived subclasses

423 / 1

-> 155

-> 157

uspto searches

Patent Apps in 423/157

Granted Patents in 423/157

Use the links above or do an advanced search in ppubs for:
(423/157.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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