USPC Class Details

Description: 71 chemistry: fertilizers / 71 chemistry: fertilizers/(1) processes and products

Hierarchy/Derived subclasses

71 / 1-> 5
 -> 6-> 7
  -> 8-> 9
   -> 10
 -> 11-> 12-> 13
  -> 14
  -> 15-> 16
   -> 17
   -> 18
   -> 19-> 20
   -> 21
   -> 22
  -> 23-> 24
  -> 25-> 26
  -> 27-> 28-> 29
    -> 30
 -> 31-> 32-> 33-> 34-> 35
     -> 36
    -> 37-> 38
     -> 39
     -> 40
     -> 41
    -> 42
    -> 43
    -> 44-> 45
     -> 46
     -> 47
    -> 48-> 49-> 50
     -> 51
     -> 52
     -> 53
  -> 54-> 55-> 56
    -> 57
   -> 58-> 59
    -> 60
  -> 61
  -> 62
  -> 63
 -> 64.01-> 64.02
  -> 64.03-> 64.04
   -> 64.05
   -> 64.06
  -> 64.07
  -> 64.08
  -> 64.09
  -> 64.1
  -> 64.11
  -> 64.12
  -> 64.13

uspto searches

Patent Apps in 71/1

Granted Patents in 71/1

Advanced search in patft or appft for the hierarchy would be:
(ccl/71/1 or ccl/71/5 or ccl/71/6 or ccl/71/7 or ccl/71/8 or ccl/71/9 or ccl/71/10 or ccl/71/11 or ccl/71/12 or ccl/71/13 or ccl/71/14 or ccl/71/15 or ccl/71/16 or ccl/71/17 or ccl/71/18 or ccl/71/19 or ccl/71/20 or ccl/71/21 or ccl/71/22 or ccl/71/23 or ccl/71/24 or ccl/71/25 or ccl/71/26 or ccl/71/27 or ccl/71/28 or ccl/71/29 or ccl/71/30 or ccl/71/31 or ccl/71/32 or ccl/71/33 or ccl/71/34 or ccl/71/35 or ccl/71/36 or ccl/71/37 or ccl/71/38 or ccl/71/39 or ccl/71/40 or ccl/71/41 or ccl/71/42 or ccl/71/43 or ccl/71/44 or ccl/71/45 or ccl/71/46 or ccl/71/47 or ccl/71/48 or ccl/71/49 or ccl/71/50 or ccl/71/51 or ccl/71/52 or ccl/71/53 or ccl/71/54 or ccl/71/55 or ccl/71/56 or ccl/71/57 or ccl/71/58 or ccl/71/59 or ccl/71/60 or ccl/71/61 or ccl/71/62 or ccl/71/63 or ccl/71/64.01 or ccl/71/64.02 or ccl/71/64.03 or ccl/71/64.04 or ccl/71/64.05 or ccl/71/64.06 or ccl/71/64.07 or ccl/71/64.08 or ccl/71/64.09 or ccl/71/64.1 or ccl/71/64.11 or ccl/71/64.12 or ccl/71/64.13)

At about 35 search terms the uspto will give you this error "Too many search terms" The 35th term is bold.

Press the Search button below to send the query to the USPTO site. (Granted patents search)




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.
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