USPC Class Details

Description: 62 refrigeration / 62 refrigeration/(600) cryogenic treatment of gas or gas mixture (617) separation of gas mixture (618) natural gas

Hierarchy/Derived subclasses

62 / 600-> 617-> 618-> 619
   -> 620-> 621-> 622
    -> 623
    -> 624
    -> 625
    -> 626
    -> 627
    -> 628
    -> 629
    -> 630-> 631
   -> 632-> 633
    -> 634
    -> 635
   -> 636
   -> 637-> 638

uspto searches

Patent Apps in 62/618

Granted Patents in 62/618

Use the links above or do an advanced search in ppubs for:
(62/618.ccls. or 62/619.ccls. or 62/620.ccls. or 62/621.ccls. or 62/622.ccls. or 62/623.ccls. or 62/624.ccls. or 62/625.ccls. or 62/626.ccls. or 62/627.ccls. or 62/628.ccls. or 62/629.ccls. or 62/630.ccls. or 62/631.ccls. or 62/632.ccls. or 62/633.ccls. or 62/634.ccls. or 62/635.ccls. or 62/636.ccls. or 62/637.ccls. or 62/638.ccls.)

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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