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CPC
COOPERATIVE PATENT CLASSIFICATION
Y02C
CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG] [2013-01]
Y02C 20/00
Capture or disposal of greenhouse gases [2020-08]
Y02C 20/10
.
of nitrous oxide (N2O) [2013-01]
Y02C 20/20
.
of methane [2013-01]
Y02C 20/30
.
of perfluorocarbons [PFC], hydrofluorocarbons [HFC] or sulfur hexafluoride [SF6] [2013-01]
Y02C 20/40
.
of CO2 [2020-08]