LED filament device pleasant in appearance and improved spatial light distribution through the formation of intentional complications in cordage
US-11808417-B2 · Nov 7, 2023 · US
the material comprising photoluminescent substances
the material comprising photoluminescent substances · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F21V1/17 |
| Official title | the material comprising photoluminescent substances |
| Display label | the material comprising photoluminescent substances |
| Total patents | 39 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 2 |
| 2017 | 10 |
| 2018 | 9 |
| 2019 | 5 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
A light emitting device
US-2022364691-A1 · Nov 17, 2022 · US
Light emitting device
US-11365867-B2 · Jun 21, 2022 · US
Light emitting device
US-2021239297-A1 · Aug 5, 2021 · US
Light emitting device
US-11015784-B2 · May 25, 2021 · US
Light fixture having flexible shroud
US-10914455-B2 · Feb 9, 2021 · US
Partial drive-type light source device and image display device using same
US-10690961-B2 · Jun 23, 2020 · US
Projector light source including wavelength conversion member having porous ceramic substrate
US-10557614-B2 · Feb 11, 2020 · US
Shade and wavelength converter for solid state luminaires
US-10544917-B2 · Jan 28, 2020 · US
Partial drive-type light source device and image display device using same
US-2019369441-A1 · Dec 5, 2019 · US
Light fixture having flexible shroud
US-2019331321-A1 · Oct 31, 2019 · US
Image display having partially driven light sources and wavelength-selective reflection film
US-10423030-B2 · Sep 24, 2019 · US
Light emitting device
US-2019195469-A1 · Jun 27, 2019 · US
Light emitting device having half mirror with light reflecting layer
US-10253952-B2 · Apr 9, 2019 · US
Partial drive-type light source device and image display device using same
US-2018292712-A1 · Oct 11, 2018 · US
Illumination device and luminaire
US-10030850-B2 · Jul 24, 2018 · US
Light emitting diode (led) based lighting systems
US-2018187861-A1 · Jul 5, 2018 · US
Light emitting device
US-2018180255-A1 · Jun 28, 2018 · US
Lighting apparatus
US-9988572-B2 · Jun 5, 2018 · US
Laser-driven white lighting system for high-brightness applications
US-9927076-B2 · Mar 27, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F21V1/17?
- CPC F21V1/17 is the Cooperative Patent Classification code for “the material comprising photoluminescent substances.”
- How many patents are filed under CPC F21V1/17 (the material comprising photoluminescent substances)?
- Our database includes 39 publications tagged with this CPC code.
- Is patent activity under CPC F21V1/17 growing?
- Publication counts under this code: 2 in 2022 vs 1 in 2023 (latest complete years).