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PCE
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DIFF Subgroup
H01M 50/35

Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages

Introduced: January 2021

Full Title

Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells > Arrangements for facilitating escape of gases > Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

IPC defines codes here since 2021.

Child Classifications

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  • H01M 50/358 External gas exhaust passages located on the battery cover or case since 2021 IPC+CPC Available in IPC and CPC
  • H01M 50/367 Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems since 2021 IPC+CPC Available in IPC and CPC