Surface area

Surface area · 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 codeB01J35/61
Official titleSurface area
Display labelSurface area
Total patents221

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
20157
201611
20179
201815
201924
202035
202123
202225
202334
202421
202514
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 B01J35/61?
CPC B01J35/61 is the Cooperative Patent Classification code for “Surface area.”
How many patents are filed under CPC B01J35/61 (Surface area)?
Our database includes 221 publications tagged with this CPC code.
Is patent activity under CPC B01J35/61 growing?
Publication counts under this code: 21 in 2024 vs 14 in 2025 (latest complete years).