PatentsDB

Constructional features of bunkers, {e.g. structural fuel tanks,} or ballast tanks, e.g. with elastic walls ({tanks for fuel or the like not forming subdivisions of the hull B63B17/0027; } cleaning of tanks B63B57/00)

Constructional features of bunkers, {e.g. structural fuel tanks,} or ballast tanks, e.g. with elastic walls ({tanks for fuel or the like not forming subdivisions of the hull B63B17/0027; } cleaning of tanks B63B57/00) · 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 codeB63B11/04
Official titleConstructional features of bunkers, {e.g. structural fuel tanks,} or ballast tanks, e.g. with elastic walls ({tanks for fuel or the like not forming subdivisions of the hull B63B17/0027; } cleaning of tanks B63B57/00)
Display labelConstructional features of bunkers, {e.g. structural fuel tanks,} or ballast tanks, e.g. with elastic walls ({tanks for fuel or the like not forming subdivisions of the hull B63B17/0027; } cleaning of tanks B63B57/00)
Total patents38

Filing trend

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

Filing activity over the last five years is rapidly growing.

Patents filed per year
YearPatents
20151
20161
20172
20183
20192
20202
20212
20227
20232
20244
20257
20265

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 B63B11/04?
CPC B63B11/04 is the Cooperative Patent Classification code for “Constructional features of bunkers, {e.g. structural fuel tanks,} or ballast tanks, e.g. with elastic walls ({tanks for fuel or the like not forming subdivisions of the hull B63B17/0027; } cleaning of tanks B63B57/00).”
How many patents are filed under CPC B63B11/04 (Constructional features of bunkers, {e.g. structural fuel tanks,} or ballast tanks, e.g. with elastic walls ({tanks for fuel or the like not forming subdivisions of the hull B63B17/0027; } cleaning of tanks B63B57/00))?
Our database includes 38 publications tagged with this CPC code.
Is patent activity under CPC B63B11/04 growing?
Publication counts under this code: 4 in 2024 vs 7 in 2025 (latest complete years).