Hierarchy/Derived subclasses
| 222 / 173 | -> 174 | ||||
| -> 175 | |||||
| -> 608 | -> 609 | -> 610 | |||
| -> 611.1 | -> 611.2 | ||||
| -> 612 | |||||
| -> 613 | -> 614 | ||||
| -> 615 | |||||
| -> 616 | |||||
| -> 617 | |||||
| -> 618 | |||||
| -> 619 | |||||
| -> 620 | -> 621 | ||||
| -> 622 | |||||
| -> 623 | -> 624 | -> 625 | |||
| -> 626 | -> 627 | ||||
| -> 628 | |||||
| -> 179 | |||||
| -> 179.5 | |||||
| -> 180 | -> 181.1 | -> 181.2 | |||
| -> 181.3 | |||||
| -> 182 | |||||
| -> 183 | |||||
| -> 184 | |||||
| -> 185.1 | |||||
| -> 186 |
uspto searches
Patent Apps in 222/173Granted Patents in 222/173
Use the links above or do an advanced search in ppubs for:
(222/173.ccls. or 222/174.ccls. or 222/175.ccls. or 222/608.ccls. or 222/609.ccls. or 222/610.ccls. or 222/611.1.ccls. or 222/611.2.ccls. or 222/612.ccls. or 222/613.ccls. or 222/614.ccls. or 222/615.ccls. or 222/616.ccls. or 222/617.ccls. or 222/618.ccls. or 222/619.ccls. or 222/620.ccls. or 222/621.ccls. or 222/622.ccls. or 222/623.ccls. or 222/624.ccls. or 222/625.ccls. or 222/626.ccls. or 222/627.ccls. or 222/628.ccls. or 222/179.ccls. or 222/179.5.ccls. or 222/180.ccls. or 222/181.1.ccls. or 222/181.2.ccls. or 222/181.3.ccls. or 222/182.ccls. or 222/183.ccls. or 222/184.ccls. or 222/185.1.ccls. or 222/186.ccls.)
At about 35 search terms the uspto will give you this error "Too many search terms" The 35th term is bold.
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.