What is CPC F21S41/337?

CPC F21S41/337 is the Cooperative Patent Classification code for “the reflector having a structured surface, e.g. with facets or corrugations.”

How many patents are filed under CPC F21S41/337 (the reflector having a structured surface, e.g. with facets or corrugations)?

Our database includes 133 publications tagged with this CPC code.

Publication counts under this code: 6 in 2024 vs 10 in 2025 (latest complete years).

the reflector having a structured surface, e.g. with facets or corrugations · 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	F21S41/337
Official title	{the reflector having a structured surface, e.g. with facets or corrugations}
Display label	the reflector having a structured surface, e.g. with facets or corrugations
Total patents	133

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

Filing activity over the last five years is declining.

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 F21S41/337?: CPC F21S41/337 is the Cooperative Patent Classification code for “the reflector having a structured surface, e.g. with facets or corrugations.”
How many patents are filed under CPC F21S41/337 (the reflector having a structured surface, e.g. with facets or corrugations)?: Our database includes 133 publications tagged with this CPC code.
Is patent activity under CPC F21S41/337 growing?: Publication counts under this code: 6 in 2024 vs 10 in 2025 (latest complete years).