DIFF Subgroup
H10W 42/20 protecting against electromagnetic or particle radiation, e.g. light, X-rays, gamma-rays or electrons
Introduced: January 2026
Full Title
Full titles differ between systems:
IPC:
Arrangements for protection of devices > protecting against electromagnetic or particle radiation, e.g. light, X-rays, gamma-rays or electrons
CPC:
Arrangements for protection of devices (arrangements for thermal protection H10W40/00) > protecting against electromagnetic or particle radiation, e.g. light, X-rays, gamma-rays or electrons
CPC subdivides this area 3x more granularly than IPC with 2 additional codes.
2 codes are CPC-only extensions.
IPC defines codes here since 2026.
Child Classifications
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- H10W 42/25 against alpha rays, e.g. for outer space applications since 2026 IPC+CPC Available in IPC and CPC