Waveguide Grating Device
US-2024019640-A1 · Jan 18, 2024 · US
Holographic polymer dispersed liquid crystals
Holographic polymer dispersed liquid crystals · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G02F1/13342 |
| Official title | {Holographic polymer dispersed liquid crystals} |
| Display label | Holographic polymer dispersed liquid crystals |
| Total patents | 189 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 15 |
| 2017 | 16 |
| 2018 | 16 |
| 2019 | 31 |
| 2020 | 27 |
| 2021 | 19 |
| 2022 | 20 |
| 2023 | 14 |
| 2024 | 15 |
| 2025 | 11 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Pattern generation device
US-2019353942-A1 · Nov 21, 2019 · US
Waveguide device incorporating a light pipe
US-10459145-B2 · Oct 29, 2019 · US
Systems and Methods for High-Throughput Recording of Holographic Gratings in Waveguide Cells
US-2019212698-A1 · Jul 11, 2019 · US
Low Haze Liquid Crystal Materials
US-2019212597-A1 · Jul 11, 2019 · US
Laser Despeckler Based on Angular Diversity
US-2019171031-A1 · Jun 6, 2019 · US
Beam divergence and various collimators for holographic or stereoscopic displays
US-10295959-B2 · May 21, 2019 · US
Optical apparatus for recording a holographic device and method of recording
US-10234696-B2 · Mar 19, 2019 · US
Tunable electro-optic filter stack
US-10175106-B2 · Jan 8, 2019 · US
Waveguide grating device
US-10156681-B2 · Dec 18, 2018 · US
Optical beam-steering devices and methods utilizing surface scattering metasurfaces
US-2018248267-A1 · Aug 30, 2018 · US
Fabrication of optical metasurfaces
US-2018240653-A1 · Aug 23, 2018 · US
Optical surface-scattering elements and metasurfaces
US-2018241131-A1 · Aug 23, 2018 · US
Control circuitry for 2d optical metasurfaces
US-2018239213-A1 · Aug 23, 2018 · US
Control circuitry for 1d optical metasurfaces
US-2018239304-A1 · Aug 23, 2018 · US
Lidar scanning system
US-2018239021-A1 · Aug 23, 2018 · US
Methods and systems for augmented reality
US-2018203232-A1 · Jul 19, 2018 · US
Holographic Polymer Dispersed Liquid Crystal Diffraction Grating
US-2018143479-A1 · May 24, 2018 · US
Optical apparatus for recording a holographic device and method of recording
US-2018143449-A1 · May 24, 2018 · US
Contact image sensor using switchable bragg gratings
US-2018120669-A1 · May 3, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G02F1/13342?
- CPC G02F1/13342 is the Cooperative Patent Classification code for “Holographic polymer dispersed liquid crystals.”
- How many patents are filed under CPC G02F1/13342 (Holographic polymer dispersed liquid crystals)?
- Our database includes 189 publications tagged with this CPC code.
- Is patent activity under CPC G02F1/13342 growing?
- Publication counts under this code: 15 in 2024 vs 11 in 2025 (latest complete years).