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made from concrete or from natural or artificial stone (manufacture B28)

made from concrete or from natural or artificial stone (manufacture B28) · Cooperative Patent Classification (CPC)

Building, mining, and civil engineering structures.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	E01B3/28
Official title	made from concrete or from natural or artificial stone (manufacture B28)
Display label	made from concrete or from natural or artificial stone (manufacture B28)
Total patents	4

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

Filing activity appears stable based on the most recent years.

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.