Apparatus and method for irradiating a medium
US-10433734-B2 · Oct 8, 2019 · US
superimposed holograms only
superimposed holograms only · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G03H1/28 |
| Official title | superimposed holograms only |
| Display label | superimposed holograms only |
| Total patents | 176 |
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 | 10 |
| 2016 | 6 |
| 2017 | 18 |
| 2018 | 17 |
| 2019 | 20 |
| 2020 | 24 |
| 2021 | 21 |
| 2022 | 23 |
| 2023 | 18 |
| 2024 | 10 |
| 2025 | 8 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Wide field-of-view holographic skew mirrors
US-2019179063-A1 · Jun 13, 2019 · US
Image and wave field projection through diffusive media
US-10321105-B2 · Jun 11, 2019 · US
Holographic representations of digital object transfers
US-10303118-B2 · May 28, 2019 · US
Skew mirrors, methods of use, and methods of manufacture
US-2019129081-A1 · May 2, 2019 · US
Pupil equalization
US-2019101760-A1 · Apr 4, 2019 · US
Multiplexed hologram tiling in a waveguide display
US-2019049727-A1 · Feb 14, 2019 · US
Integrated optical circuit for holographic information processing
US-2019041796-A1 · Feb 7, 2019 · US
Skew mirrors, methods of use, and methods of manufacture
US-10185069-B2 · Jan 22, 2019 · US
Holographic display apparatus and holographic display method for providing enhanced image quality
US-2018364642-A1 · Dec 20, 2018 · US
Multiplexed hologram tiling in a waveguide display
US-10146053-B2 · Dec 4, 2018 · US
Apparatus and method for displaying holographic 3D image
US-10139781-B2 · Nov 27, 2018 · US
Method for producing a beam shaping holographic optical element
US-2018329127-A1 · Nov 15, 2018 · US
Self-reference holographic imaging system
US-10120334-B2 · Nov 6, 2018 · US
Adjustable scanned beam projector
US-10120337-B2 · Nov 6, 2018 · US
Holographic display apparatus and holographic display method for providing enhanced image quality
US-10088803-B2 · Oct 2, 2018 · US
Producing images of security features
US-10082769-B2 · Sep 25, 2018 · US
Holographic representations of digital object transfers
US-2018203411-A1 · Jul 19, 2018 · US
Holographic display and operating method thereof
US-2018181065-A1 · Jun 28, 2018 · US
Apparatus for manufacturing holographic optical element, and apparatus for reconstructing holograms
US-2018129165-A1 · May 10, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G03H1/28?
- CPC G03H1/28 is the Cooperative Patent Classification code for “superimposed holograms only.”
- How many patents are filed under CPC G03H1/28 (superimposed holograms only)?
- Our database includes 176 publications tagged with this CPC code.
- Is patent activity under CPC G03H1/28 growing?
- Publication counts under this code: 10 in 2024 vs 8 in 2025 (latest complete years).