Hierarchy/Derived subclasses
| 312 / 9.1 | -> 9.9 | -> 9.11 | -> 9.12 | -> 9.13 | ||
| -> 9.14 | ||||||
| -> 9.15 | ||||||
| -> 9.16 | -> 9.17 | -> 9.18 | ||||
| -> 9.19 | ||||||
| -> 9.21 | -> 9.22 | |||||
| -> 9.23 | ||||||
| -> 9.24 | -> 9.25 | |||||
| -> 9.26 | ||||||
| -> 9.27 | -> 9.28 | |||||
| -> 9.29 | -> 9.31 | |||||
| -> 9.32 | -> 9.33 | |||||
| -> 9.34 | -> 9.35 | |||||
| -> 9.36 | -> 9.37 | |||||
| -> 9.38 | ||||||
| -> 9.41 | -> 9.42 | |||||
| -> 9.43 | -> 9.44 | |||||
| -> 9.45 | -> 9.46 | |||||
| -> 9.47 | -> 9.48 | -> 9.51 | ||||
| -> 9.52 | ||||||
| -> 9.53 | -> 9.54 | |||||
| -> 9.55 | ||||||
| -> 9.56 | ||||||
| -> 9.57 | ||||||
| -> 9.58 | -> 9.59 | |||||
| -> 9.61 | ||||||
| -> 9.63 | ||||||
| -> 9.64 |
uspto searches
Patent Apps in 312/9.9Granted Patents in 312/9.9
Use the links above or do an advanced search in ppubs for:
(312/9.9.ccls. or 312/9.11.ccls. or 312/9.12.ccls. or 312/9.13.ccls. or 312/9.14.ccls. or 312/9.15.ccls. or 312/9.16.ccls. or 312/9.17.ccls. or 312/9.18.ccls. or 312/9.19.ccls. or 312/9.21.ccls. or 312/9.22.ccls. or 312/9.23.ccls. or 312/9.24.ccls. or 312/9.25.ccls. or 312/9.26.ccls. or 312/9.27.ccls. or 312/9.28.ccls. or 312/9.29.ccls. or 312/9.31.ccls. or 312/9.32.ccls. or 312/9.33.ccls. or 312/9.34.ccls. or 312/9.35.ccls. or 312/9.36.ccls. or 312/9.37.ccls. or 312/9.38.ccls. or 312/9.41.ccls. or 312/9.42.ccls. or 312/9.43.ccls. or 312/9.44.ccls. or 312/9.45.ccls. or 312/9.46.ccls. or 312/9.47.ccls. or 312/9.48.ccls. or 312/9.51.ccls. or 312/9.52.ccls. or 312/9.53.ccls. or 312/9.54.ccls. or 312/9.55.ccls. or 312/9.56.ccls. or 312/9.57.ccls. or 312/9.58.ccls. or 312/9.59.ccls. or 312/9.61.ccls. or 312/9.63.ccls. or 312/9.64.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.