What is CPC F21S43/19?

CPC F21S43/19 is the Cooperative Patent Classification code for “Attachment of light sources or lamp holders.”

How many patents are filed under CPC F21S43/19 (Attachment of light sources or lamp holders)?

Our database includes 577 publications tagged with this CPC code.

Publication counts under this code: 51 in 2024 vs 39 in 2025 (latest complete years).

Attachment of light sources or lamp holders · 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	F21S43/19
Official title	Attachment of light sources or lamp holders
Display label	Attachment of light sources or lamp holders
Total patents	577

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 F21S43/19?: CPC F21S43/19 is the Cooperative Patent Classification code for “Attachment of light sources or lamp holders.”
How many patents are filed under CPC F21S43/19 (Attachment of light sources or lamp holders)?: Our database includes 577 publications tagged with this CPC code.
Is patent activity under CPC F21S43/19 growing?: Publication counts under this code: 51 in 2024 vs 39 in 2025 (latest complete years).