Methods, systems, and apparatus for modulating or reducing photophobic responses
US-2026077153-A1 · Mar 19, 2026 · US
Rugate filters
Rugate filters · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G02B5/289 |
| Official title | {Rugate filters} |
| Display label | Rugate filters |
| Total patents | 37 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 6 |
| 2017 | 1 |
| 2019 | 4 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 5 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Optical filter and optical device utilizing same
US-12558874-B2 · Feb 24, 2026 · US
Method and system for fabrication and use of a spectral basis filter
US-2026009935-A1 · Jan 8, 2026 · US
Method and system for fabrication and use of a spectral basis filter
US-12392943-B2 · Aug 19, 2025 · US
Methods, systems, and apparatus for modulating or reducing photophobic responses
US-12383698-B2 · Aug 12, 2025 · US
Waveguide arrangement
US-2025237867-A1 · Jul 24, 2025 · US
Methods, systems, and apparatus for modulating or reducing photophobic responses
US-12268822-B2 · Apr 8, 2025 · US
Methods, systems, and apparatus for modulating or reducing photophobic responses
US-2025108187-A1 · Apr 3, 2025 · US
Wavelength band selective filters for ar/vr systems
US-2024142677-A1 · May 2, 2024 · US
Near infrared transparent, visible light absorptive coating and glass substrate with coating
US-2024010552-A1 · Jan 11, 2024 · US
Methods, systems, and apparatus for modulating or reducing photophobic responses
US-2023248937-A1 · Aug 10, 2023 · US
Spectrally beam-combined, fiber-based multi-wavelength receiver/transceiver
US-11683098-B2 · Jun 20, 2023 · US
Methods, systems, and apparatus for modulating or reducing photophobic responses
US-11672944-B2 · Jun 13, 2023 · US
Method and system for fabrication and use of a spectral basis filter
US-2022404531-A1 · Dec 22, 2022 · US
Hybrid gradient-interference hardcoatings
US-11520082-B2 · Dec 6, 2022 · US
Spectrally beam-combined, fiber-based multi-wavelength receiver/transceiver
US-2022021460-A1 · Jan 20, 2022 · US
Coating material
US-2021311227-A1 · Oct 7, 2021 · US
Optical filter and optical device utilizing same
US-2021187907-A1 · Jun 24, 2021 · US
Hybrid gradient-interfernce hardcoatings
US-2020192002-A1 · Jun 18, 2020 · US
Methods, systems, and apparatus for modulating or reducing photophobic responses
US-2020192011-A1 · Jun 18, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G02B5/289?
- CPC G02B5/289 is the Cooperative Patent Classification code for “Rugate filters.”
- How many patents are filed under CPC G02B5/289 (Rugate filters)?
- Our database includes 37 publications tagged with this CPC code.
- Is patent activity under CPC G02B5/289 growing?
- Publication counts under this code: 2 in 2024 vs 5 in 2025 (latest complete years).