USPC Class Details – HistoricIP

Description: 264 plastic and nonmetallic article shaping or treating: processes / 264 plastic and nonmetallic article shaping or treating: processes/(405) direct application of electrical or wave energy to work (e.g., electromagnetic wave, particulate, magnetic, induction heat, sonic, electrostatic energy, etc.) (413) producing or treating porous product (415) including in situ (e.g., foaming) (416) using liquid to gas blowing agent

Hierarchy/Derived subclasses

264 / 405	-> 413	-> 415	-> 416	-> 417
				-> 418

uspto searches

Patent Apps in 264/416

Granted Patents in 264/416

Use the links above or do an advanced search in ppubs for:
(264/416.ccls. or 264/417.ccls. or 264/418.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.