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comprising hollow cavities

comprising hollow cavities · Cooperative Patent Classification (CPC)

Building, mining, and civil engineering structures.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeE04D3/357
Official title{comprising hollow cavities}
Display labelcomprising hollow cavities
Total patents8

Filing trend

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

Filing activity over the last five years is stable.

Patents filed per year
YearPatents
20163
20171
20181
20201
20211
20231

Representative patents

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