characterised by the interlayer used (C04B37/028 takes precedence)

characterised by the interlayer used (C04B37/028 takes precedence) · 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 codeC04B37/023
Official title{characterised by the interlayer used (C04B37/028 takes precedence)}
Display labelcharacterised by the interlayer used (C04B37/028 takes precedence)
Total patents174

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
20154
201613
20179
201811
201920
202022
202119
202222
202317
202423
202513
20261

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 C04B37/023?
CPC C04B37/023 is the Cooperative Patent Classification code for “characterised by the interlayer used (C04B37/028 takes precedence).”
How many patents are filed under CPC C04B37/023 (characterised by the interlayer used (C04B37/028 takes precedence))?
Our database includes 174 publications tagged with this CPC code.
Is patent activity under CPC C04B37/023 growing?
Publication counts under this code: 23 in 2024 vs 13 in 2025 (latest complete years).