Removing surface-material, e.g. by engraving, by etching {(for multi-layer articles B44C3/005)}

Removing surface-material, e.g. by engraving, by etching {(for multi-layer articles B44C3/005)} · 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 codeB44C1/22
Official titleRemoving surface-material, e.g. by engraving, by etching {(for multi-layer articles B44C3/005)}
Display labelRemoving surface-material, e.g. by engraving, by etching {(for multi-layer articles B44C3/005)}
Total patents99

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
201517
201616
20178
20188
20199
20206
202111
20225
20239
20246
20254

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 B44C1/22?
CPC B44C1/22 is the Cooperative Patent Classification code for “Removing surface-material, e.g. by engraving, by etching {(for multi-layer articles B44C3/005)}.”
How many patents are filed under CPC B44C1/22 (Removing surface-material, e.g. by engraving, by etching {(for multi-layer articles B44C3/005)})?
Our database includes 99 publications tagged with this CPC code.
Is patent activity under CPC B44C1/22 growing?
Publication counts under this code: 6 in 2024 vs 4 in 2025 (latest complete years).