impregnated with or embedded in a plastic substance {(not used)}

impregnated with or embedded in a plastic substance {(not used)} · 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 codeB32B5/28
Official titleimpregnated with or embedded in a plastic substance {(not used)}
Display labelimpregnated with or embedded in a plastic substance {(not used)}
Total patents499

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
201559
201636
201758
201863
201968
202060
202150
202224
202334
202418
202527
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 B32B5/28?
CPC B32B5/28 is the Cooperative Patent Classification code for “impregnated with or embedded in a plastic substance {(not used)}.”
How many patents are filed under CPC B32B5/28 (impregnated with or embedded in a plastic substance {(not used)})?
Our database includes 499 publications tagged with this CPC code.
Is patent activity under CPC B32B5/28 growing?
Publication counts under this code: 18 in 2024 vs 27 in 2025 (latest complete years).