DIFF Subgroup
H01M 50/449 having a layered structure
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 > Separators; Membranes; Diaphragms; Spacing elements inside cells > Separators, membranes or diaphragms characterised by the material > having a layered structure
IPC and CPC are identically structured here. All 3 subcodes exist in both systems.
IPC defines codes here since 2021.
Child Classifications
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- H01M 50/451 comprising layers of only organic material and layers containing inorganic material since 2021 IPC+CPC Available in IPC and CPC
- H01M 50/454 comprising a non-fibrous layer and a fibrous layer superimposed on one another since 2021 IPC+CPC Available in IPC and CPC