Hierarchy/Derived subclasses
| 164 / 1 | -> 6 | -> 7.1 | -> 7.2 | |||
| -> 8 | ||||||
| -> 9 | -> 10 | -> 11 | ||||
| -> 12 | ||||||
| -> 13 | ||||||
| -> 14 | ||||||
| -> 15 | -> 16 | |||||
| -> 17 | ||||||
| -> 18 | ||||||
| -> 19 | -> 20 | -> 21 | ||||
| -> 22 | ||||||
| -> 23 | -> 24 | -> 516 | -> 517 | |||
| -> 518 | ||||||
| -> 519 | ||||||
| -> 27 | -> 28 | |||||
| -> 29 | ||||||
| -> 30 | -> 31 | -> 32 | ||||
| -> 33 | ||||||
| -> 34 | -> 35 | -> 36 | ||||
| -> 37 | -> 38 | |||||
| -> 39 | ||||||
| -> 40 | ||||||
| -> 520 | -> 521 | |||||
| -> 522 | ||||||
| -> 523 | ||||||
| -> 524 | ||||||
| -> 525 | -> 526 | -> 527 | ||||
| -> 528 | ||||||
| -> 529 | ||||||
| -> 44 | ||||||
| -> 45 |
uspto searches
Patent Apps in 164/6Granted Patents in 164/6
Use the links above or do an advanced search in ppubs for:
(164/6.ccls. or 164/7.1.ccls. or 164/7.2.ccls. or 164/8.ccls. or 164/9.ccls. or 164/10.ccls. or 164/11.ccls. or 164/12.ccls. or 164/13.ccls. or 164/14.ccls. or 164/15.ccls. or 164/16.ccls. or 164/17.ccls. or 164/18.ccls. or 164/19.ccls. or 164/20.ccls. or 164/21.ccls. or 164/22.ccls. or 164/23.ccls. or 164/24.ccls. or 164/516.ccls. or 164/517.ccls. or 164/518.ccls. or 164/519.ccls. or 164/27.ccls. or 164/28.ccls. or 164/29.ccls. or 164/30.ccls. or 164/31.ccls. or 164/32.ccls. or 164/33.ccls. or 164/34.ccls. or 164/35.ccls. or 164/36.ccls. or 164/37.ccls. or 164/38.ccls. or 164/39.ccls. or 164/40.ccls. or 164/520.ccls. or 164/521.ccls. or 164/522.ccls. or 164/523.ccls. or 164/524.ccls. or 164/525.ccls. or 164/526.ccls. or 164/527.ccls. or 164/528.ccls. or 164/529.ccls. or 164/44.ccls. or 164/45.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.