Vertical-cavity surface-emitting laser device
US-2020303904-A1 · Sep 24, 2020 · US
special etch stop layers
special etch stop layers · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01S5/209 |
| Official title | {special etch stop layers} |
| Display label | special etch stop layers |
| Total patents | 101 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 16 |
| 2016 | 9 |
| 2017 | 10 |
| 2018 | 3 |
| 2019 | 10 |
| 2020 | 12 |
| 2021 | 5 |
| 2022 | 10 |
| 2023 | 11 |
| 2024 | 4 |
| 2025 | 10 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Semiconductor laser with waveguide flanked by conductive layers
US-10784648-B2 · Sep 22, 2020 · US
Semiconductor optical device, optical module, and manufacturing method of semiconductor optical device
US-2020287090-A1 · Sep 10, 2020 · US
Light emitting device and method of manufacturing same, and projector
US-2020266611-A1 · Aug 20, 2020 · US
Implant regrowth VCSEL and VCSEL array with heterogeneous combination of different VCSEL types
US-10693277-B2 · Jun 23, 2020 · US
Semiconductor laser, electronic apparatus, and method of driving semiconductor laser
US-10680406-B2 · Jun 9, 2020 · US
Tunable laser and manufacturing method for tunable laser
US-10666014-B2 · May 26, 2020 · US
Etched planarized VCSEL
US-10644482-B2 · May 5, 2020 · US
Semiconductor device and method for manufacturing semiconductor device
US-2020091675-A1 · Mar 19, 2020 · US
Semiconductor laser, electronic apparatus, and method of driving semiconductor laser
US-10587092-B2 · Mar 10, 2020 · US
Reflector structure for tunable laser and tunable laser
US-2020076155-A1 · Mar 5, 2020 · US
Semiconductor optical integrated device having buried hetero structure waveguide and deep ridge waveguide
US-10534131-B2 · Jan 14, 2020 · US
Implant regrowth vcsel and vcsel array with heterogeneous combination of different vcsel types
US-2019393678-A1 · Dec 26, 2019 · US
Implant regrowth VCSEL and VCSEL array with heterogeneous combination of different VCSEL types
US-10374391-B2 · Aug 6, 2019 · US
Etched planarized vcsel
US-2019207369-A1 · Jul 4, 2019 · US
Semiconductor optical integrated device and method of manufacturing the same
US-2019187369-A1 · Jun 20, 2019 · US
Semiconductor laser, electronic apparatus, and method of driving semiconductor laser
US-2019181608-A1 · Jun 13, 2019 · US
Semiconductor laser, electronic apparatus, and method of driving semiconductor laser
US-2019173262-A1 · Jun 6, 2019 · US
Semiconductor optical integrated device including a reduced thickness upper cladding layer in a ridge waveguide portion, and method of manufacturing the same
US-10241267-B2 · Mar 26, 2019 · US
Etched planarized VCSEL
US-10230215-B2 · Mar 12, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01S5/209?
- CPC H01S5/209 is the Cooperative Patent Classification code for “special etch stop layers.”
- How many patents are filed under CPC H01S5/209 (special etch stop layers)?
- Our database includes 101 publications tagged with this CPC code.
- Is patent activity under CPC H01S5/209 growing?
- Publication counts under this code: 4 in 2024 vs 10 in 2025 (latest complete years).