Flexible diplexer with dynamically configurable band-split in hybrid fiber coax deployments
US-12250177-B2 · Mar 11, 2025 · US
using a set of bandfilters
using a set of bandfilters · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04B3/21 |
| Official title | using a set of bandfilters |
| Display label | using a set of bandfilters |
| Total patents | 63 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 5 |
| 2017 | 1 |
| 2018 | 5 |
| 2019 | 10 |
| 2020 | 4 |
| 2021 | 6 |
| 2022 | 10 |
| 2023 | 6 |
| 2024 | 9 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Network using asymmetric uplink and downlink baud rates to reduce crosstalk
US-2024235611-A1 · Jul 11, 2024 · US
Transceiver with Shared Filter for both Transmit and Receive Modes
US-2024235609-A9 · Jul 11, 2024 · US
Method and apparatus for surveying remote sites via guided wave communications
US-12021578-B2 · Jun 25, 2024 · US
Flexible Diplexer with Dynamically Configurable Band-Split in Hybrid Fiber Coax Deployments
US-2024195597-A1 · Jun 13, 2024 · US
Transceiver with Shared Filter for both Transmit and Receive Modes
US-2024137068-A1 · Apr 25, 2024 · US
Reception method and reception chain for a PLC modem
US-11968002-B2 · Apr 23, 2024 · US
Transferring digital subscriber connection signals via a coaxial cable
US-11949536-B2 · Apr 2, 2024 · US
Network using asymmetric uplink and downlink baud rates to reduce crosstalk
US-11943005-B2 · Mar 26, 2024 · US
Signal transmission device and signal transmission system
US-11863245-B2 · Jan 2, 2024 · US
Adaptive filters in vehicle power line communication
US-2023403045-A1 · Dec 14, 2023 · US
Transceiver with shared filter for both transmit and receive modes
US-11838068-B2 · Dec 5, 2023 · US
Transferring digital subscriber connection signals via a coaxial cable
US-2023327906-A1 · Oct 12, 2023 · US
Signal transceiving apparatus and method having echo-canceling mechanism
US-11711111-B2 · Jul 25, 2023 · US
Signal transmission device and signal transmission system
US-2023216540-A1 · Jul 6, 2023 · US
Simplified frequency-domain filter adaptation window
US-11632147-B2 · Apr 18, 2023 · US
Transceiver with Shared Filter for both Transmit and Receive Modes
US-2022407560-A1 · Dec 22, 2022 · US
Network optimization for mitigation of crosstalk between network links
US-2022376740-A1 · Nov 24, 2022 · US
Transceiver with shared filter for both transmit and receive modes
US-11381279-B2 · Jul 5, 2022 · US
Signal transceiving apparatus and method having echo-canceling mechanism
US-2022200657-A1 · Jun 23, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04B3/21?
- CPC H04B3/21 is the Cooperative Patent Classification code for “using a set of bandfilters.”
- How many patents are filed under CPC H04B3/21 (using a set of bandfilters)?
- Our database includes 63 publications tagged with this CPC code.
- Is patent activity under CPC H04B3/21 growing?
- Publication counts under this code: 9 in 2024 vs 3 in 2025 (latest complete years).