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.) (180) triazines

Hierarchy/Derived subclasses

544 / 1	-> 180	-> 181
		-> 182	-> 183	-> 184
		-> 185	-> 186
		-> 187	-> 188
			-> 189
		-> 190	-> 191
		-> 192
		-> 193
		-> 193.1	-> 193.2
		-> 194	-> 195
			-> 196	-> 197	-> 198
				-> 199
				-> 200	-> 201
					-> 202
					-> 203
			-> 204	-> 205	-> 206	-> 207
				-> 208	-> 209
				-> 210
			-> 211	-> 212
			-> 213
		-> 214
		-> 215	-> 216	-> 217	-> 218
				-> 219	-> 220	-> 221	-> 222
						-> 223

uspto searches

Patent Apps in 544/180

Granted Patents in 544/180

Use the links above or do an advanced search in ppubs for:
(544/180.ccls. or 544/181.ccls. or 544/182.ccls. or 544/183.ccls. or 544/184.ccls. or 544/185.ccls. or 544/186.ccls. or 544/187.ccls. or 544/188.ccls. or 544/189.ccls. or 544/190.ccls. or 544/191.ccls. or 544/192.ccls. or 544/193.ccls. or 544/193.1.ccls. or 544/193.2.ccls. or 544/194.ccls. or 544/195.ccls. or 544/196.ccls. or 544/197.ccls. or 544/198.ccls. or 544/199.ccls. or 544/200.ccls. or 544/201.ccls. or 544/202.ccls. or 544/203.ccls. or 544/204.ccls. or 544/205.ccls. or 544/206.ccls. or 544/207.ccls. or 544/208.ccls. or 544/209.ccls. or 544/210.ccls. or 544/211.ccls. or 544/212.ccls. or 544/213.ccls. or 544/214.ccls. or 544/215.ccls. or 544/216.ccls. or 544/217.ccls. or 544/218.ccls. or 544/219.ccls. or 544/220.ccls. or 544/221.ccls. or 544/222.ccls. or 544/223.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.

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