Patent Classification Explorer PCE

DIFF Main Group

B31D 3/00

Making articles of cellular structure, e.g. insulating board

Introduced: September 1968

Of 4 combined children, 2 exist in both systems.

2 codes are CPC-only extensions.

Child Classifications

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B31D 3/002 CPC only CPC only
B31D 3/005 +1 CPC CPC only CPC only
B31D 3/02 honeycombed structures +4 CPC IPC+CPC Available in IPC and CPC
B31D 3/04 cellular packaging articles, e.g. for bottles IPC+CPC Available in IPC and CPC