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Muffle furnaces; Retort furnaces

Muffle furnaces; Retort furnaces · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeC21D9/0043
Official title{Muffle furnaces; Retort furnaces}
Display labelMuffle furnaces; Retort furnaces
Total patents17

Filing trend

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

Filing activity over the last five years is growing.

Patents filed per year
YearPatents
20162
20171
20191
20201
20224
20231
20244
20252
20261

Representative patents

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