Coherent optical receiver testing
US-2018375588-A1 · Dec 27, 2018 · US
Heterodyne {, i.e. coherent receivers where, after the opto-electronic conversion, an electrical signal at an intermediate frequency [IF] is obtained}
Heterodyne {, i.e. coherent receivers where, after the opto-electronic conversion, an electrical signal at an intermediate frequency [IF] is obtained} · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04B10/64 |
| Official title | Heterodyne {, i.e. coherent receivers where, after the opto-electronic conversion, an electrical signal at an intermediate frequency [IF] is obtained} |
| Display label | Heterodyne {, i.e. coherent receivers where, after the opto-electronic conversion, an electrical signal at an intermediate frequency [IF] is obtained} |
| Total patents | 228 |
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 | 7 |
| 2016 | 13 |
| 2017 | 24 |
| 2018 | 21 |
| 2019 | 30 |
| 2020 | 27 |
| 2021 | 28 |
| 2022 | 25 |
| 2023 | 25 |
| 2024 | 15 |
| 2025 | 10 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Phased-array radio frequency receiver
US-10164712-B2 · Dec 25, 2018 · US
Spatially dephasing local oscillator for coherent free-space optical communications
US-10122471-B2 · Nov 6, 2018 · US
Coherent optical receiver testing
US-10097279-B2 · Oct 9, 2018 · US
Directional wireless drop systems for broadband networks and related methods
US-2018262363-A1 · Sep 13, 2018 · US
Optical Beamforming
US-2018198551-A1 · Jul 12, 2018 · US
Fiber communication systems and methods
US-2018131444-A1 · May 10, 2018 · US
Terminal Enclosure Wireless Base Station
US-2018109320-A1 · Apr 19, 2018 · US
Optical paired channel transceiver and system
US-9924247-B2 · Mar 20, 2018 · US
Self-coherent robust spectrally efficient optical transmission systems
US-2018069638-A1 · Mar 8, 2018 · US
Fiber communication systems and methods
US-9912409-B2 · Mar 6, 2018 · US
Transceivers and receivers for quantum key distribution and methods pertaining thereto
US-9906311-B1 · Feb 27, 2018 · US
Coherent optical receiver testing
US-2018048386-A1 · Feb 15, 2018 · US
Coherent optical receiver testing
US-2018034554-A1 · Feb 1, 2018 · US
Phased-array coherent transceiver
US-2018026721-A1 · Jan 25, 2018 · US
Spatially dephasing local oscillator for coherent free-space optical communications
US-2018013497-A1 · Jan 11, 2018 · US
Digital Signal Processing of an Optical Communications Signal in a Coherent Optical Receiver
US-2017338893-A1 · Nov 23, 2017 · US
Mitigating noise and obi in rfog networks
US-2017331556-A1 · Nov 16, 2017 · US
Coherent optical receiver testing
US-9806822-B1 · Oct 31, 2017 · US
Coherent optical receiver testing
US-9806806-B1 · Oct 31, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04B10/64?
- CPC H04B10/64 is the Cooperative Patent Classification code for “Heterodyne {, i.e. coherent receivers where, after the opto-electronic conversion, an electrical signal at an intermediate frequency [IF] is obtained}.”
- How many patents are filed under CPC H04B10/64 (Heterodyne {, i.e. coherent receivers where, after the opto-electronic conversion, an electrical signal at an intermediate frequency [IF] is obtained})?
- Our database includes 228 publications tagged with this CPC code.
- Is patent activity under CPC H04B10/64 growing?
- Publication counts under this code: 15 in 2024 vs 10 in 2025 (latest complete years).