USPC Class Details

Description: 208 mineral oils: processes and products / 208 mineral oils: processes and products/(46) chemical conversion of hydrocarbons (49) plural serial stages of chemical conversion (67) first stage is thermal or catalytic cracking (72) cracking in all stages

Hierarchy/Derived subclasses

208 / 46	-> 49	-> 67	-> 72	-> 73	-> 74
				-> 75
				-> 76
				-> 77

uspto searches

Patent Apps in 208/72

Granted Patents in 208/72

Use the links above or do an advanced search in ppubs for:
(208/72.ccls. or 208/73.ccls. or 208/74.ccls. or 208/75.ccls. or 208/76.ccls. or 208/77.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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