Graded interfaces

Graded interfaces · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeC23C16/029
Official title{Graded interfaces}
Display labelGraded interfaces
Total patents69

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
20153
20165
201710
20186
20196
20207
202110
20228
20234
20244
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 C23C16/029?
CPC C23C16/029 is the Cooperative Patent Classification code for “Graded interfaces.”
How many patents are filed under CPC C23C16/029 (Graded interfaces)?
Our database includes 69 publications tagged with this CPC code.
Is patent activity under CPC C23C16/029 growing?
Publication counts under this code: 4 in 2024 vs 6 in 2025 (latest complete years).