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Natural expanding materials, e.g. clay

Natural expanding materials, e.g. clay · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

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CPC classification statistics
Metric	Value
CPC code	C04B38/064
Official title	{Natural expanding materials, e.g. clay}
Display label	Natural expanding materials, e.g. clay
Total patents	6

Year-over-year patent counts classified under this CPC code.

Filing activity appears stable based on the most recent years.

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