Weak Index Guiding of Interband Lasers Bonded to GaAs Substrates
US-2023261442-A1 · Aug 17, 2023 · US
Buried stripe structure {(H01S5/227 takes precedence)}
Buried stripe structure {(H01S5/227 takes precedence)} · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01S5/223 |
| Official title | Buried stripe structure {(H01S5/227 takes precedence)} |
| Display label | Buried stripe structure {(H01S5/227 takes precedence)} |
| Total patents | 74 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 6 |
| 2017 | 9 |
| 2018 | 11 |
| 2019 | 6 |
| 2020 | 2 |
| 2021 | 6 |
| 2022 | 6 |
| 2023 | 7 |
| 2024 | 7 |
| 2025 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Semiconductor laser device
US-2023253762-A1 · Aug 10, 2023 · US
Semiconductor optical element
US-11705693-B2 · Jul 18, 2023 · US
Optical semiconductor device
US-2023155347-A1 · May 18, 2023 · US
Quantum-cascade laser element and quantum-cascade laser device
US-2023139139-A1 · May 4, 2023 · US
Quantum cascade laser element and quantum cascade laser device
US-2023117347-A1 · Apr 20, 2023 · US
Semiconductor optical device and manufacturing method therefor
US-2023106955-A1 · Apr 6, 2023 · US
Light emitting device and method of manufacturing light emitting device
US-2022416509-A1 · Dec 29, 2022 · US
Method for manufacturing optical semiconductor device
US-11456576-B2 · Sep 27, 2022 · US
Semiconductor Optical Element
US-2022045481-A1 · Feb 10, 2022 · US
Semiconductor laser
US-11245248-B2 · Feb 8, 2022 · US
Gain-guided semiconductor laser and method of manufacturing the same
US-2022029388-A1 · Jan 27, 2022 · US
Semiconductor laser device and method of manufacturing the same
US-11233374-B2 · Jan 25, 2022 · US
Laser bar and semiconductor laser and method of producing laser bars and semiconductor lasers
US-11205885-B2 · Dec 21, 2021 · US
Optical semiconductor device and method of manufacturing optical semiconductor device
US-2021344172-A1 · Nov 4, 2021 · US
Method of manufacture for an ultraviolet emitting optoelectronic device
US-2021273415-A1 · Sep 2, 2021 · US
Method for producing a semiconductor chip and semiconductor chip
US-11004876-B2 · May 11, 2021 · US
Method for manufacturing optical semiconductor device
US-2021119418-A1 · Apr 22, 2021 · US
Semiconductor laser
US-2021066886-A1 · Mar 4, 2021 · US
Laser bar and semiconductor laser and method of producing laser bars and semiconductor lasers
US-2020388988-A1 · Dec 10, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01S5/223?
- CPC H01S5/223 is the Cooperative Patent Classification code for “Buried stripe structure {(H01S5/227 takes precedence)}.”
- How many patents are filed under CPC H01S5/223 (Buried stripe structure {(H01S5/227 takes precedence)})?
- Our database includes 74 publications tagged with this CPC code.
- Is patent activity under CPC H01S5/223 growing?
- Publication counts under this code: 7 in 2024 vs 7 in 2025 (latest complete years).