USPC Class Details

Description: 544 organic compounds -- part of the class 532-570 series / 544 organic compounds -- part of the class 532-570 series/() organic compounds (class 532, subclass 1) () heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen as the only ring hetero atoms (class 540, subclass 1) (1) hetero ring is six-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazines, etc.) (63) six-membered hetero ring consists of oxygen, nitrogen and carbon (e.g., 1,2-oxazines, etc) (98) 1,4-oxazines (106) morpholines (i.e., fully hydrogenated 1,4-oxazines (111) additional nitrogen containing hetero ring (e.g., thiazetidine, etc.)

Hierarchy/Derived subclasses

544 / 1-> 63-> 98-> 106-> 111-> 112-> 113
     -> 114-> 115-> 116-> 117-> 118
        -> 119
      -> 120-> 121
      -> 122-> 123
     -> 124-> 125-> 126
       -> 127-> 128
      -> 129-> 130
      -> 131
     -> 132-> 133-> 134
       -> 135-> 136
      -> 137-> 138
      -> 139
      -> 140
     -> 141-> 142-> 143-> 144

uspto searches

Patent Apps in 544/111

Granted Patents in 544/111

Use the links above or do an advanced search in ppubs for:
(544/111.ccls. or 544/112.ccls. or 544/113.ccls. or 544/114.ccls. or 544/115.ccls. or 544/116.ccls. or 544/117.ccls. or 544/118.ccls. or 544/119.ccls. or 544/120.ccls. or 544/121.ccls. or 544/122.ccls. or 544/123.ccls. or 544/124.ccls. or 544/125.ccls. or 544/126.ccls. or 544/127.ccls. or 544/128.ccls. or 544/129.ccls. or 544/130.ccls. or 544/131.ccls. or 544/132.ccls. or 544/133.ccls. or 544/134.ccls. or 544/135.ccls. or 544/136.ccls. or 544/137.ccls. or 544/138.ccls. or 544/139.ccls. or 544/140.ccls. or 544/141.ccls. or 544/142.ccls. or 544/143.ccls. or 544/144.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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