USPC Class Details

Description: D28 cosmetic products and toilet articles / d28 cosmetic products and toilet articles/(4) cosmetic product (8.1) soap

Hierarchy/Derived subclasses

D28 / 4-> 8.1-> 8.2

uspto searches

Patent Apps in D28/8.1

Granted Patents in D28/8.1

Advanced search in patft or appft for the hierarchy would be:
(ccl/D28/8.1 or ccl/D28/8.2)

Press the Search button below to send the query to the USPTO site. (Granted patents search)

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.