USPC Class Details

Description: 201 distillation: processes, thermolytic / 201 distillation: processes, thermolytic/(21) feed of two or more carbonaceous material (at least the predominate one being solid) (22) char containing

Hierarchy/Derived subclasses

201 / 21

-> 22

uspto searches

Patent Apps in 201/22

Granted Patents in 201/22

Use the links above or do an advanced search in ppubs for:
(201/22.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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