Visualization of Sub-Wavelength Features
US-2021384694-A1 · Dec 9, 2021 · US
Nanoparticles, e.g. doped nanoparticles acting as a gain material
Nanoparticles, e.g. doped nanoparticles acting as a gain material · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01S3/169 |
| Official title | {Nanoparticles, e.g. doped nanoparticles acting as a gain material} |
| Display label | Nanoparticles, e.g. doped nanoparticles acting as a gain material |
| Total patents | 87 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 5 |
| 2017 | 8 |
| 2018 | 9 |
| 2019 | 5 |
| 2020 | 13 |
| 2021 | 9 |
| 2022 | 6 |
| 2023 | 5 |
| 2024 | 9 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Single-mode micro-laser based on single whispering gallery mode optical microcavity and preparation method thereof
US-2021367402-A1 · Nov 25, 2021 · US
Nanoparticle doping for lasers and amplifiers operating at eye-safer wavelengths, and/or exhibiting reduced stimulated brillouin scattering
US-2021313756-A1 · Oct 7, 2021 · US
Terahertz laser device based on zinc oxide phonon vibration optically excited at room temperature
US-11133641-B1 · Sep 28, 2021 · US
Method for Manufacturing Optical Device
US-2021215877-A1 · Jul 15, 2021 · US
Surface plasmon infrared nano pulse laser having multi-resonance competition mechanism
US-10971895-B2 · Apr 6, 2021 · US
Optical element and associated manufacturing method
US-2021088716-A1 · Mar 25, 2021 · US
Surface plasmon infrared nano pulse laser having multi-resonance competition mechanism
US-2020395735-A1 · Dec 17, 2020 · US
Energy conversion system
US-2020357943-A1 · Nov 12, 2020 · US
System and method for micro laser particles
US-2020303900-A1 · Sep 24, 2020 · US
High efficiency emission in praseodymium doped conventional glass and fiber
US-2020266600-A1 · Aug 20, 2020 · US
Implanted vacancy centers with coherent optical properties
US-10734781-B2 · Aug 4, 2020 · US
Energy conversion system
US-10727365-B2 · Jul 28, 2020 · US
System and method for micro laser particles
US-10707649-B2 · Jul 7, 2020 · US
Transition radiation light sources
US-10665447-B2 · May 26, 2020 · US
Low-speckle light source and imaging devices with micro-refractive element stabilized laser array
US-10620449-B2 · Apr 14, 2020 · US
Multi-wavelength laser apparatus
US-10615561-B2 · Apr 7, 2020 · US
Transition radiation light sources
US-10607829-B2 · Mar 31, 2020 · US
Optical nanocomposites for laser applications
US-2020079683-A1 · Mar 12, 2020 · US
Ultrathin film lasing
US-10585043-B2 · Mar 10, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01S3/169?
- CPC H01S3/169 is the Cooperative Patent Classification code for “Nanoparticles, e.g. doped nanoparticles acting as a gain material.”
- How many patents are filed under CPC H01S3/169 (Nanoparticles, e.g. doped nanoparticles acting as a gain material)?
- Our database includes 87 publications tagged with this CPC code.
- Is patent activity under CPC H01S3/169 growing?
- Publication counts under this code: 9 in 2024 vs 4 in 2025 (latest complete years).