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PCE
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DIFF Subgroup
C01B 3/506

at low temperatures

Introduced: January 2026

Full Title

Full titles differ between systems:

IPC:

Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen > Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification > at low temperatures

CPC:

Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen (production of water-gas or synthesis gas from solid carbonaceous material C10J) > Separation of hydrogen or hydrogen-containing gases from gaseous mixtures, e.g. purification > at low temperatures

No child classifications to compare. This is a leaf node in both IPC and CPC.