Y02C20/00	7	Capture or disposal of greenhouse gases	CPCONLY	Y02C20/00		11
Y02C20/10	8	of nitrous oxide (N2O)	CPCONLY	Y02C20/10		2568
Y02C20/20	8	of methane	CPCONLY	Y02C20/20		2049
Y02C20/30	8	of perfluorocarbons [PFC], hydrofluorocarbons [HFC] or sulfur hexafluoride [SF6]	CPCONLY	Y02C20/30		1812
Y02C20/40	8	of CO2	CPCONLY	Y02C20/40		20431
