Hierarchy/Derived subclasses
| 54 / 44.1 | -> 44.2 | |
| -> 44.3 | ||
| -> 44.4 | ||
| -> 44.5 | -> 44.6 | |
| -> 44.7 | ||
| -> 45.1 | ||
| -> 46.1 | ||
| -> 46.2 |
uspto searches
Patent Apps in 54/44.1Granted Patents in 54/44.1
Use the links above or do an advanced search in ppubs for:
(54/44.1.ccls. or 54/44.2.ccls. or 54/44.3.ccls. or 54/44.4.ccls. or 54/44.5.ccls. or 54/44.6.ccls. or 54/44.7.ccls. or 54/45.1.ccls. or 54/46.1.ccls. or 54/46.2.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.