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washers, e.g. for sealing

washers, e.g. for sealing · Cooperative Patent Classification (CPC)

Separating, mixing, shaping, printing, and transporting materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeB21D53/20
Official titlewashers, e.g. for sealing
Display labelwashers, e.g. for sealing
Total patents16

Filing trend

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

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
20183
20193
20204
20212
20223
20251

Representative patents

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