Silicon nitride

Silicon nitride · 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 codeC23C14/0652
Official title{Silicon nitride}
Display labelSilicon nitride
Total patents338

Filing trend

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

Filing activity over the last five years is growing.

Patents filed per year
YearPatents
201517
201623
201726
201842
201942
202044
202117
202234
202333
202427
202530
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 C23C14/0652?
CPC C23C14/0652 is the Cooperative Patent Classification code for “Silicon nitride.”
How many patents are filed under CPC C23C14/0652 (Silicon nitride)?
Our database includes 338 publications tagged with this CPC code.
Is patent activity under CPC C23C14/0652 growing?
Publication counts under this code: 27 in 2024 vs 30 in 2025 (latest complete years).