This area was updated. Please refer to the CPC Notices of Changes and Notices of Editorial Corrections for more information.
COOPERATIVE PATENT CLASSIFICATION
CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG] [2013-01]
Capture or disposal of greenhouse gases [2020-08]
of nitrous oxide (N2O) [2013-01]
of methane [2013-01]
of perfluorocarbons [PFC], hydrofluorocarbons [HFC] or sulfur hexafluoride [SF6] [2013-01]
of CO2 [2020-08]