DIFF Subgroup
H01M 50/636 Closing or sealing filling ports, e.g. using lids
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 or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings > Arrangements or processes for filling with liquid, e.g. electrolytes > Filling ports > Closing or sealing filling ports, e.g. using lids
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 50/664 Temporary seals, e.g. for storage of instant batteries or seawater batteries since 2021 IPC+CPC Available in IPC and CPC