Quantum dot color filter ink compositions and devices utilizing the same
US-2024192548-A1 · Jun 13, 2024 · US
wavelength filtering
wavelength filtering · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G02F2203/055 |
| Official title | wavelength filtering |
| Display label | wavelength filtering |
| Total patents | 523 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 27 |
| 2016 | 31 |
| 2017 | 52 |
| 2018 | 76 |
| 2019 | 76 |
| 2020 | 58 |
| 2021 | 45 |
| 2022 | 42 |
| 2023 | 40 |
| 2024 | 32 |
| 2025 | 32 |
| 2026 | 12 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Resonant optical device with a microheater
US-9612458-B1 · Apr 4, 2017 · US
Light modulation device
US-2016377902-A1 · Dec 29, 2016 · US
Display substrate, display panel and display device
US-2016370655-A1 · Dec 22, 2016 · US
Display panel and display apparatus
US-2016357068-A1 · Dec 8, 2016 · US
Glazed vehicle roof
US-2016325529-A1 · Nov 10, 2016 · US
Method and backlight module that achieve high color satuationof lcd (liquid crystal display) device
US-2016313605-A1 · Oct 27, 2016 · US
Multi-wavelength source of femtosecond infrared pulses
US-2016294145-A1 · Oct 6, 2016 · US
Cascaded optical harmonic generation
US-2016291443-A1 · Oct 6, 2016 · US
Optical element
US-2016291357-A1 · Oct 6, 2016 · US
Reflective type display device
US-2016291406-A1 · Oct 6, 2016 · US
Color reflective display and method of manufacturing the same
US-2016282697-A1 · Sep 29, 2016 · US
Modulated light source
US-9436022-B2 · Sep 6, 2016 · US
Optical transmitter and method for controlling operation state of optical transmitter
US-9425899-B2 · Aug 23, 2016 · US
Light conversion member, and backlight unit and display device including the same
US-2016223732-A1 · Aug 4, 2016 · US
Color reflective display and method of manufacturing the same
US-9383622-B2 · Jul 5, 2016 · US
Display unit and electronic apparatus
US-2016187755-A1 · Jun 30, 2016 · US
Cascaded optical harmonic generation
US-9377667-B2 · Jun 28, 2016 · US
Tunable rejection liquid crystal filter
US-2016178946-A1 · Jun 23, 2016 · US
Self-switching microresonator optical switch
US-9366886-B2 · Jun 14, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G02F2203/055?
- CPC G02F2203/055 is the Cooperative Patent Classification code for “wavelength filtering.”
- How many patents are filed under CPC G02F2203/055 (wavelength filtering)?
- Our database includes 523 publications tagged with this CPC code.
- Is patent activity under CPC G02F2203/055 growing?
- Publication counts under this code: 32 in 2024 vs 32 in 2025 (latest complete years).