What is CPC F28D1/0435?

CPC F28D1/0435 is the Cooperative Patent Classification code for “Combination of units extending one behind the other (F28D1/0452 takes precedence).”

How many patents are filed under CPC F28D1/0435 (Combination of units extending one behind the other (F28D1/0452 takes precedence))?

Our database includes 296 publications tagged with this CPC code.

Publication counts under this code: 32 in 2024 vs 23 in 2025 (latest complete years).

Combination of units extending one behind the other (F28D1/0452 takes precedence) · Cooperative Patent Classification (CPC)

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

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	F28D1/0435
Official title	{Combination of units extending one behind the other (F28D1/0452 takes precedence)}
Display label	Combination of units extending one behind the other (F28D1/0452 takes precedence)
Total patents	296

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

Filing activity over the last five years is stable.

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Answers are generated from the same data shown on this page.

What is CPC F28D1/0435?: CPC F28D1/0435 is the Cooperative Patent Classification code for “Combination of units extending one behind the other (F28D1/0452 takes precedence).”
How many patents are filed under CPC F28D1/0435 (Combination of units extending one behind the other (F28D1/0452 takes precedence))?: Our database includes 296 publications tagged with this CPC code.
Is patent activity under CPC F28D1/0435 growing?: Publication counts under this code: 32 in 2024 vs 23 in 2025 (latest complete years).