varying the phase velocity along a leaky transmission line (frequency scanning H01Q3/22; non-resonant leaky-waveguide or transmission-line aerials H01Q13/20)

varying the phase velocity along a leaky transmission line (frequency scanning H01Q3/22; non-resonant leaky-waveguide or transmission-line aerials H01Q13/20) · Cooperative Patent Classification (CPC)

Electric circuits, power, telecommunications, and semiconductors.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeH01Q3/443
Official title{varying the phase velocity along a leaky transmission line (frequency scanning H01Q3/22; non-resonant leaky-waveguide or transmission-line aerials H01Q13/20)}
Display labelvarying the phase velocity along a leaky transmission line (frequency scanning H01Q3/22; non-resonant leaky-waveguide or transmission-line aerials H01Q13/20)
Total patents84

Filing trend

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

Filing activity over the last five years is declining.

Patents filed per year
YearPatents
20158
20164
20176
201810
20198
202017
20216
20225
20238
20247
20253
20262

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 H01Q3/443?
CPC H01Q3/443 is the Cooperative Patent Classification code for “varying the phase velocity along a leaky transmission line (frequency scanning H01Q3/22; non-resonant leaky-waveguide or transmission-line aerials H01Q13/20).”
How many patents are filed under CPC H01Q3/443 (varying the phase velocity along a leaky transmission line (frequency scanning H01Q3/22; non-resonant leaky-waveguide or transmission-line aerials H01Q13/20))?
Our database includes 84 publications tagged with this CPC code.
Is patent activity under CPC H01Q3/443 growing?
Publication counts under this code: 7 in 2024 vs 3 in 2025 (latest complete years).