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) (354) aluminum or heavy metal, other than lead, containing

Hierarchy/Derived subclasses

44 / 300-> 354-> 355-> 356
  -> 357
  -> 358-> 359-> 360
   -> 361
   -> 362
   -> 363-> 364
   -> 365
   -> 366
   -> 367
   -> 368

uspto searches

Patent Apps in 44/354

Granted Patents in 44/354

Use the links above or do an advanced search in ppubs for:
(44/354.ccls. or 44/355.ccls. or 44/356.ccls. or 44/357.ccls. or 44/358.ccls. or 44/359.ccls. or 44/360.ccls. or 44/361.ccls. or 44/362.ccls. or 44/363.ccls. or 44/364.ccls. or 44/365.ccls. or 44/366.ccls. or 44/367.ccls. or 44/368.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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