with different heat storage materials not coming into direct contact

with different heat storage materials not coming into direct contact · Cooperative Patent Classification (CPC)

Engines, pumps, lighting, heating, and mechanical systems.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeF28D20/026
Official title{with different heat storage materials not coming into direct contact}
Display labelwith different heat storage materials not coming into direct contact
Total patents63

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
20154
20162
20175
20189
201916
20209
20218
20224
20233
20241
20252

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 F28D20/026?
CPC F28D20/026 is the Cooperative Patent Classification code for “with different heat storage materials not coming into direct contact.”
How many patents are filed under CPC F28D20/026 (with different heat storage materials not coming into direct contact)?
Our database includes 63 publications tagged with this CPC code.
Is patent activity under CPC F28D20/026 growing?
Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).