USPC Class Details

Description: 44 fuel and related compositions / 44 fuel and related compositions/(300) liquid fuels (excluding fuels that are exclusively mixtures of liquid hydrocarbons) (307) plant or animal extract mixtures or extracts of indeterminate structure containing

Hierarchy/Derived subclasses

44 / 300

-> 307

-> 308

uspto searches

Patent Apps in 44/307

Granted Patents in 44/307

Use the links above or do an advanced search in ppubs for:
(44/307.ccls. or 44/308.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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