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) (375) containing compound having phosphorus bonded directly to chalcogen and directly or indirectly to carbon by nonionic bonding (e.g., alkyl acid phosphates, etc.) (376) nitrogen attached to the phosphorus directly or indirectly by acyclic nonionic bonding

Hierarchy/Derived subclasses

44 / 300-> 375-> 376-> 377

uspto searches

Patent Apps in 44/376

Granted Patents in 44/376

Use the links above or do an advanced search in ppubs for:
(44/376.ccls. or 44/377.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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