Hierarchy/Derived subclasses
| 68 / 3r | -> 13r | -> 14 | |||
| -> 15 | -> 16 | ||||
| -> 17r | -> 17a | ||||
| -> 18r | -> 18c | ||||
| -> 18d | |||||
| -> 18f | -> 18fa | ||||
| -> 19 | -> 19.1 | -> 19.2 | |||
| -> 20 | |||||
| -> 21 | -> 22r | -> 22a | |||
| -> 22b | |||||
| -> 23r | -> 23.1 | -> 23.2 | |||
| -> 23.3 | |||||
| -> 23.4 | |||||
| -> 23.5 | |||||
| -> 23.6 | -> 23.7 | ||||
| -> 24 | |||||
| -> 25 | |||||
| -> 26 | |||||
| -> 23a | |||||
| -> 13a |
uspto searches
Patent Apps in 68/13rGranted Patents in 68/13r
Use the links above or do an advanced search in ppubs for:
(68/13r.ccls. or 68/14.ccls. or 68/15.ccls. or 68/16.ccls. or 68/17r.ccls. or 68/17a.ccls. or 68/18r.ccls. or 68/18c.ccls. or 68/18d.ccls. or 68/18f.ccls. or 68/18fa.ccls. or 68/19.ccls. or 68/19.1.ccls. or 68/19.2.ccls. or 68/20.ccls. or 68/21.ccls. or 68/22r.ccls. or 68/22a.ccls. or 68/22b.ccls. or 68/23r.ccls. or 68/23.1.ccls. or 68/23.2.ccls. or 68/23.3.ccls. or 68/23.4.ccls. or 68/23.5.ccls. or 68/23.6.ccls. or 68/23.7.ccls. or 68/24.ccls. or 68/25.ccls. or 68/26.ccls. or 68/23a.ccls. or 68/13a.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.