Hierarchy/Derived subclasses
| 455 / 73 | -> 550.1 | -> 551 | -> nam | |
| -> 552.1 | -> 553.1 | |||
| -> 554.1 | -> pbx | |||
| -> 554.2 | ||||
| -> 555 | ||||
| -> 556.1 | -> 556.2 | |||
| -> 557 | -> 558 | |||
| -> 559 | ||||
| -> 560 | -> mtso | -> bsc | ||
| -> 561 | -> 562.1 | |||
| -> 563 | ||||
| -> 564 | ||||
| -> 565 | ||||
| -> 566 | ||||
| -> 567 | ||||
| -> 569.1 | -> 569.2 | |||
| -> 570 | ||||
| -> 571 | ||||
| -> 572 | -> 573 | |||
| -> 574 | ||||
| -> 575.1 | -> 575.2 | |||
| -> 575.3 | ||||
| -> 575.4 | ||||
| -> 575.5 | ||||
| -> 575.6 | ||||
| -> 575.7 | ||||
| -> 575.8 | ||||
| -> 575.9 |
uspto searches
Patent Apps in 455/550.1Granted Patents in 455/550.1
Use the links above or do an advanced search in ppubs for:
(455/550.1.ccls. or 455/551.ccls. or 455/nam.ccls. or 455/552.1.ccls. or 455/553.1.ccls. or 455/554.1.ccls. or 455/pbx.ccls. or 455/554.2.ccls. or 455/555.ccls. or 455/556.1.ccls. or 455/556.2.ccls. or 455/557.ccls. or 455/558.ccls. or 455/559.ccls. or 455/560.ccls. or 455/mtso.ccls. or 455/bsc.ccls. or 455/561.ccls. or 455/562.1.ccls. or 455/563.ccls. or 455/564.ccls. or 455/565.ccls. or 455/566.ccls. or 455/567.ccls. or 455/569.1.ccls. or 455/569.2.ccls. or 455/570.ccls. or 455/571.ccls. or 455/572.ccls. or 455/573.ccls. or 455/574.ccls. or 455/575.1.ccls. or 455/575.2.ccls. or 455/575.3.ccls. or 455/575.4.ccls. or 455/575.5.ccls. or 455/575.6.ccls. or 455/575.7.ccls. or 455/575.8.ccls. or 455/575.9.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.