to metallic pipes or tubes (processes for coating the interior of pipes B05D7/222)

to metallic pipes or tubes (processes for coating the interior of pipes B05D7/222) · Cooperative Patent Classification (CPC)

Separating, mixing, shaping, printing, and transporting materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeB05D7/146
Official title{to metallic pipes or tubes (processes for coating the interior of pipes B05D7/222)}
Display labelto metallic pipes or tubes (processes for coating the interior of pipes B05D7/222)
Total patents79

Filing trend

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

Filing activity over the last five years is stable.

Patents filed per year
YearPatents
20156
20163
20179
20188
20197
20207
20217
20228
202310
20245
20257
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 B05D7/146?
CPC B05D7/146 is the Cooperative Patent Classification code for “to metallic pipes or tubes (processes for coating the interior of pipes B05D7/222).”
How many patents are filed under CPC B05D7/146 (to metallic pipes or tubes (processes for coating the interior of pipes B05D7/222))?
Our database includes 79 publications tagged with this CPC code.
Is patent activity under CPC B05D7/146 growing?
Publication counts under this code: 5 in 2024 vs 7 in 2025 (latest complete years).