De bruijn switch
US-2023243674-A1 · Aug 3, 2023 · US
using optical delay lines or optical buffers or optical recirculation
using optical delay lines or optical buffers or optical recirculation · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04Q2011/002 |
| Official title | {using optical delay lines or optical buffers or optical recirculation} |
| Display label | using optical delay lines or optical buffers or optical recirculation |
| Total patents | 71 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 6 |
| 2017 | 18 |
| 2018 | 10 |
| 2019 | 1 |
| 2020 | 4 |
| 2021 | 7 |
| 2022 | 7 |
| 2023 | 4 |
| 2024 | 3 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Raster multiplexing in photonic circuits
US-11531248-B2 · Dec 20, 2022 · US
Networking switching devices and methods thereof
US-2022224997-A1 · Jul 14, 2022 · US
Photonic quantum computer architecture
US-2022224996-A1 · Jul 14, 2022 · US
Networking switching devices and methods thereof
US-11272270-B1 · Mar 8, 2022 · US
Networking switching devices and methods thereof
US-2022070556-A1 · Mar 3, 2022 · US
Optical transmission system and optical transmission method
US-11265628-B2 · Mar 1, 2022 · US
Raster multiplexing in photonic circuits
US-2022004075-A1 · Jan 6, 2022 · US
Method and apparatus for management of a spectral capacity of a wavelength division multiplexing system
US-2021409847-A1 · Dec 30, 2021 · US
Optical transmission system and optical transmission method
US-2021321178-A1 · Oct 14, 2021 · US
Concentric fiber for space-division multiplexed optical communications and method of use
US-2021075510-A1 · Mar 11, 2021 · US
Flexible Ethernet over wireless links
US-2021076111-A1 · Mar 11, 2021 · US
Apparatus and method for tunable photonic delay
US-10911845-B1 · Feb 2, 2021 · US
Optical packet switching and processing for deterministic networking
US-2021029423-A1 · Jan 28, 2021 · US
Apparatus and method for tunable photonic delay
US-2021014584-A1 · Jan 14, 2021 · US
Concentric fiber for space-division multiplexed optical communications and method of use
US-10784961-B2 · Sep 22, 2020 · US
Segment routing for optical networks
US-10750255-B2 · Aug 18, 2020 · US
Concentric fiber for space-division multiplexed optical communications and method of use
US-2020186248-A1 · Jun 11, 2020 · US
Concentric fiber for space-division multiplexed optical communications and method of use
US-10567080-B2 · Feb 18, 2020 · US
Concentric fiber for space-division multiplexed optical communications and method of use
US-2019007138-A1 · Jan 3, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04Q2011/002?
- CPC H04Q2011/002 is the Cooperative Patent Classification code for “using optical delay lines or optical buffers or optical recirculation.”
- How many patents are filed under CPC H04Q2011/002 (using optical delay lines or optical buffers or optical recirculation)?
- Our database includes 71 publications tagged with this CPC code.
- Is patent activity under CPC H04Q2011/002 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).