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.) (141) five-membered hetero ring consisting of one nitrogen and four carbons (142) the five-membered hetero ring is one of the cyclos in a polycyclo ring system (143) the five-membered hetero ring is one of the cyclos in a bicyclo ring system (144) chalcogen bonded directly to the bicyclo ring system
Hierarchy/Derived subclasses
uspto searches
Patent Apps in 544/144
Granted Patents in 544/144
Use the links above or do an advanced search in
ppubs for:
(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.