closed by a lid sealed to the upper rim of the container, e.g. tray-like container

closed by a lid sealed to the upper rim of the container, e.g. tray-like container · 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 codeB65B31/028
Official title{closed by a lid sealed to the upper rim of the container, e.g. tray-like container}
Display labelclosed by a lid sealed to the upper rim of the container, e.g. tray-like container
Total patents108

Filing trend

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

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
20152
20169
201710
20189
201920
202014
202115
202214
20234
20244
20255
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 B65B31/028?
CPC B65B31/028 is the Cooperative Patent Classification code for “closed by a lid sealed to the upper rim of the container, e.g. tray-like container.”
How many patents are filed under CPC B65B31/028 (closed by a lid sealed to the upper rim of the container, e.g. tray-like container)?
Our database includes 108 publications tagged with this CPC code.
Is patent activity under CPC B65B31/028 growing?
Publication counts under this code: 4 in 2024 vs 5 in 2025 (latest complete years).