including layers graded in composition or physical properties

including layers graded in composition or physical properties · 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 codeC23C28/36
Official title{including layers graded in composition or physical properties}
Display labelincluding layers graded in composition or physical properties
Total patents223

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
201522
201629
201716
201823
201924
202027
202121
202214
202319
202414
202512
20262

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 C23C28/36?
CPC C23C28/36 is the Cooperative Patent Classification code for “including layers graded in composition or physical properties.”
How many patents are filed under CPC C23C28/36 (including layers graded in composition or physical properties)?
Our database includes 223 publications tagged with this CPC code.
Is patent activity under CPC C23C28/36 growing?
Publication counts under this code: 14 in 2024 vs 12 in 2025 (latest complete years).