Multi-mode multi-pass delay
US-12461310-B1 · Nov 4, 2025 · US
delay line
delay line · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G02F2201/20 |
| Official title | delay line |
| Display label | delay line |
| Total patents | 57 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 3 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 5 |
| 2021 | 2 |
| 2022 | 4 |
| 2023 | 7 |
| 2024 | 6 |
| 2025 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Modulators based on cascaded mach-zehnder interferometers
US-2025328055-A1 · Oct 23, 2025 · US
Optical arbitrary pulse pattern generator
US-12449707-B2 · Oct 21, 2025 · US
Optical short pulse generator, optical short pulse generation method, and program
US-2025321460-A1 · Oct 16, 2025 · US
Light source
US-12411387-B2 · Sep 9, 2025 · US
Light source
US-12379641-B2 · Aug 5, 2025 · US
Cryogenic waveform source
US-12283995-B2 · Apr 22, 2025 · US
Light source
US-2025076729-A1 · Mar 6, 2025 · US
Light source
US-2025013120-A1 · Jan 9, 2025 · US
Light source
US-2024411202-A1 · Dec 12, 2024 · US
Light source
US-12085835-B2 · Sep 10, 2024 · US
High-efficiency end-fire 3D optical phased array based on multi-layer platform
US-12061407-B2 · Aug 13, 2024 · US
Light source
US-12038668-B2 · Jul 16, 2024 · US
Mach-Zehnder interferometer with mirrored facet
US-11994718-B2 · May 28, 2024 · US
High-order harmonic observation device and high-order harmonic observation method
US-2024019364-A1 · Jan 18, 2024 · US
Light source
US-2023375897-A1 · Nov 23, 2023 · US
Cryogenic waveform source
US-2023231631-A1 · Jul 20, 2023 · US
Optical arbitrary pulse pattern generator
US-2023221613-A1 · Jul 13, 2023 · US
Multi-mode multi-pass delay
US-11635570-B1 · Apr 25, 2023 · US
Mach-zehnder modulator
US-2023078976-A1 · Mar 16, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G02F2201/20?
- CPC G02F2201/20 is the Cooperative Patent Classification code for “delay line.”
- How many patents are filed under CPC G02F2201/20 (delay line)?
- Our database includes 57 publications tagged with this CPC code.
- Is patent activity under CPC G02F2201/20 growing?
- Publication counts under this code: 6 in 2024 vs 9 in 2025 (latest complete years).