Passivation

Passivation · 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 codeB81C2201/016
Official titlePassivation
Display labelPassivation
Total patents94

Filing trend

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

Filing activity over the last five years is rapidly growing.

Patents filed per year
YearPatents
20154
20168
20179
20187
201912
202010
20214
20227
202311
20245
202515
20262

Representative patents

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

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC B81C2201/016?
CPC B81C2201/016 is the Cooperative Patent Classification code for “Passivation.”
How many patents are filed under CPC B81C2201/016 (Passivation)?
Our database includes 94 publications tagged with this CPC code.
Is patent activity under CPC B81C2201/016 growing?
Publication counts under this code: 5 in 2024 vs 15 in 2025 (latest complete years).