Photonic blockchain based on optical proof-of-work
US-12493316-B2 · Dec 9, 2025 · US
Optical bistable devices
Optical bistable devices · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G02F3/02 |
| Official title | Optical bistable devices |
| Display label | Optical bistable devices |
| Total patents | 34 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 5 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 6 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Quantum-state readout using stimulated emissions
US-12411388-B2 · Sep 9, 2025 · US
Tensorized integrated coherent Ising machine
US-12393096-B2 · Aug 19, 2025 · US
Optical computing device and method for controlling optical computing device
US-2025155735-A1 · May 15, 2025 · US
Controller for providing a classification of sensor data for a motor vehicle by means of an optical neural network, and method for operating the controller
US-2025061698-A1 · Feb 20, 2025 · US
Tensorized integrated coherent ising machine
US-2024402572-A1 · Dec 5, 2024 · US
Heralded photonic entanglement source
US-2024295792-A1 · Sep 5, 2024 · US
Qubit reading procedure including coherent shel ving
US-12051519-B2 · Jul 30, 2024 · US
Quantum chip optoelectronic interposer
US-2024220840-A1 · Jul 4, 2024 · US
All-photonic Boolean logic device based on phase change straight waveguide and full binary logic implementation method thereof
US-11906876-B2 · Feb 20, 2024 · US
Photonic Blockchain Based on Optical Proof-of-Work
US-2024004417-A1 · Jan 4, 2024 · US
Quantum-state readout using stimulated emissions
US-2023418128-A1 · Dec 28, 2023 · US
All-photonic boolean logic device based on phase change straight waveguide and full binary logic implementation method thereof
US-2023221619-A1 · Jul 13, 2023 · US
Qubit reading procedure including coherent shelving
US-2022270776-A1 · Aug 25, 2022 · US
Quantum-state readout using four-wave mixing
US-2022171256-A1 · Jun 2, 2022 · US
Optical Signal Processing Apparatus
US-2022137485-A1 · May 5, 2022 · US
Photonic crystals logic devices
US-11126065-B2 · Sep 21, 2021 · US
Photonic device
US-11099456-B2 · Aug 24, 2021 · US
Resonant structured optical transistor
US-10901297-B2 · Jan 26, 2021 · US
Photonic device
US-2020081318-A1 · Mar 12, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G02F3/02?
- CPC G02F3/02 is the Cooperative Patent Classification code for “Optical bistable devices.”
- How many patents are filed under CPC G02F3/02 (Optical bistable devices)?
- Our database includes 34 publications tagged with this CPC code.
- Is patent activity under CPC G02F3/02 growing?
- Publication counts under this code: 6 in 2024 vs 5 in 2025 (latest complete years).