DIFF Subgroup
C10G 49/18 in the presence of hydrogen-generating compounds, e.g. ammonia, water, hydrogen sulfide
Introduced: January 1980
Full Title
Full titles differ between systems:
IPC:
Treatment of hydrocarbon oils, in the presence of hydrogen or hydrogen-generating compounds, not provided for in a single one of groups , , , , or > in the presence of hydrogen-generating compounds, e.g. ammonia, water, hydrogen sulfide
CPC:
Treatment of hydrocarbon oils, in the presence of hydrogen or hydrogen-generating compounds, not provided for in a single one of groups C10G45/02, C10G45/32, C10G45/44, C10G45/58 or C10G47/00 > in the presence of hydrogen-generating compounds, e.g. ammonia, water, hydrogen sulfide
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1980.
Child Classifications
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