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) (412) organic nitrogen compound containing (432) plural nitrogens attached indirectly to each other by acyclic nonionic bonding (433) chalcogen attached indirectly to one of the nitrogens by acyclic nonionic bonding

Hierarchy/Derived subclasses

44 / 300

-> 412

-> 432

-> 433

uspto searches

Patent Apps in 44/433

Granted Patents in 44/433

Use the links above or do an advanced search in ppubs for:
(44/433.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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