the coating or impregnating process including a chemical conversion or reaction

the coating or impregnating process including a chemical conversion or reaction · 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 codeC04B41/455
Official title{the coating or impregnating process including a chemical conversion or reaction}
Display labelthe coating or impregnating process including a chemical conversion or reaction
Total patents68

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
20168
20177
201811
20198
20208
20215
20223
20234
20245
20254
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 C04B41/455?
CPC C04B41/455 is the Cooperative Patent Classification code for “the coating or impregnating process including a chemical conversion or reaction.”
How many patents are filed under CPC C04B41/455 (the coating or impregnating process including a chemical conversion or reaction)?
Our database includes 68 publications tagged with this CPC code.
Is patent activity under CPC C04B41/455 growing?
Publication counts under this code: 5 in 2024 vs 4 in 2025 (latest complete years).