PatentsDB

by conversion of the surface of the metal, e.g. by oxidation, whether or not followed by reaction or removal of the converted layer

by conversion of the surface of the metal, e.g. by oxidation, whether or not followed by reaction or removal of the converted layer · Cooperative Patent Classification (CPC)

Electric circuits, power, telecommunications, and semiconductors.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeH05K3/385
Official title{by conversion of the surface of the metal, e.g. by oxidation, whether or not followed by reaction or removal of the converted layer}
Display labelby conversion of the surface of the metal, e.g. by oxidation, whether or not followed by reaction or removal of the converted layer
Total patents54

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
20156
20165
20172
20187
20197
20207
20212
20221
20238
20243
20256

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 H05K3/385?
CPC H05K3/385 is the Cooperative Patent Classification code for “by conversion of the surface of the metal, e.g. by oxidation, whether or not followed by reaction or removal of the converted layer.”
How many patents are filed under CPC H05K3/385 (by conversion of the surface of the metal, e.g. by oxidation, whether or not followed by reaction or removal of the converted layer)?
Our database includes 54 publications tagged with this CPC code.
Is patent activity under CPC H05K3/385 growing?
Publication counts under this code: 3 in 2024 vs 6 in 2025 (latest complete years).