After-treatment, e.g. cleaning or desmearing of holes

After-treatment, e.g. cleaning or desmearing of holes · 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 codeH05K3/0055
Official title{After-treatment, e.g. cleaning or desmearing of holes}
Display labelAfter-treatment, e.g. cleaning or desmearing of holes
Total patents184

Filing trend

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

Filing activity over the last five years is declining.

Patents filed per year
YearPatents
20159
201623
201717
201819
201925
202026
202123
20226
20236
202413
202514
20263

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 H05K3/0055?
CPC H05K3/0055 is the Cooperative Patent Classification code for “After-treatment, e.g. cleaning or desmearing of holes.”
How many patents are filed under CPC H05K3/0055 (After-treatment, e.g. cleaning or desmearing of holes)?
Our database includes 184 publications tagged with this CPC code.
Is patent activity under CPC H05K3/0055 growing?
Publication counts under this code: 13 in 2024 vs 14 in 2025 (latest complete years).