USPC Class Details – HistoricIP

Description: 987 organic compounds containing a bi, sb, as, or p atom or containing a metal atom of the 6th to 8th group of the periodic system / 987 organic compounds containing a bi, sb, as, or p atom or containing a metal atom of the 6th to 8th group of the periodic system/(30) phosphorus compounds (9/02; 9/06) (187) phosphorus directly bonded to n, i.e., p(n) (9/22; 9/22a)

Hierarchy/Derived subclasses

987 / 30	-> 187	-> n	-> 188
			-> 189	-> hal
			-> 190
			-> 191
			-> 192
			-> 193
			-> 194		-> 195
					-> 196
					-> 197	-> x	-> 198	-> c
					-> 199
					-> 200
					-> 201
					-> 202

uspto searches

Patent Apps in 987/187

Granted Patents in 987/187

Use the links above or do an advanced search in ppubs for:
(987/187.ccls. or 987/n.ccls. or 987/188.ccls. or 987/189.ccls. or 987/hal.ccls. or 987/190.ccls. or 987/191.ccls. or 987/192.ccls. or 987/193.ccls. or 987/194.ccls. or 987/195.ccls. or 987/196.ccls. or 987/197.ccls. or 987/x.ccls. or 987/198.ccls. or 987/c.ccls. or 987/199.ccls. or 987/200.ccls. or 987/201.ccls. or 987/202.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.