Jammer detection
US-2024322935-A1 · Sep 26, 2024 · US
based on characteristics of target signal or of transmission (as countermeasure against surveillance H04K3/827), e.g. using direct sequence spread spectrum or fast frequency hopping (spread spectrum techniques H04B1/69)
based on characteristics of target signal or of transmission (as countermeasure against surveillance H04K3/827), e.g. using direct sequence spread spectrum or fast frequency hopping (spread spectrum techniques H04B1/69) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04K3/25 |
| Official title | {based on characteristics of target signal or of transmission (as countermeasure against surveillance H04K3/827), e.g. using direct sequence spread spectrum or fast frequency hopping (spread spectrum techniques H04B1/69)} |
| Display label | based on characteristics of target signal or of transmission (as countermeasure against surveillance H04K3/827), e.g. using direct sequence spread spectrum or fast frequency hopping (spread spectrum techniques H04B1/69) |
| Total patents | 156 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 14 |
| 2017 | 16 |
| 2018 | 13 |
| 2019 | 16 |
| 2020 | 17 |
| 2021 | 14 |
| 2022 | 18 |
| 2023 | 11 |
| 2024 | 11 |
| 2025 | 8 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and methods for managing drone access
US-10497270-B2 · Dec 3, 2019 · US
Wireless vibrometer with antenna array
US-10470675-B2 · Nov 12, 2019 · US
Effective cross-layer satellite communications link interferences mitigation in the presence of various RFI types
US-10291347-B2 · May 14, 2019 · US
Systems and method for adaptive frequency management utilizing multiple frequency sets
US-10159073-B2 · Dec 18, 2018 · US
Downlink control channel encryption for jamming resilience
US-10135795-B2 · Nov 20, 2018 · US
Frequency agile anti-jam data link
US-10116411-B1 · Oct 30, 2018 · US
Apparatuses, systems, and methods for communicating using mimo and spread spectrum coding in backscatter of ambient signals
US-2018241604-A1 · Aug 23, 2018 · US
Photonic implementation of jamming avoidance response
US-2018234175-A1 · Aug 16, 2018 · US
Effective cross-layer satellite communications link interferences mitigation in the presence of various rfi types
US-2018191457-A1 · Jul 5, 2018 · US
Apparatuses, systems, and methods for communicating using MIMO and spread spectrum coding in backscatter of ambient signals
US-9973367-B2 · May 15, 2018 · US
Photonic implementation of jamming avoidance response
US-9954619-B2 · Apr 24, 2018 · US
Detecting misbehavior in vehicle-to-vehicle (v2v) communications
US-2018102054-A1 · Apr 12, 2018 · US
Frequency waterfilling via implicit coordination
US-9936421-B2 · Apr 3, 2018 · US
Systems and Methods for Managing Drone Access
US-2018025650-A1 · Jan 25, 2018 · US
Detecting misbehavior in vehicle-to-vehicle (V2V) comminications
US-9865168-B2 · Jan 9, 2018 · US
Method and apparatus for providing broadcast channel encryption to enhance cellular network security
US-2018007548-A1 · Jan 4, 2018 · US
Wireless Vibrometer with Antenna Array
US-2017360317-A1 · Dec 21, 2017 · US
Middleware device, driving method of reader and method for determining misrecognition of tag
US-9842289-B2 · Dec 12, 2017 · US
Wavelet transformation based anti-jam processing techniques
US-9838151-B1 · Dec 5, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04K3/25?
- CPC H04K3/25 is the Cooperative Patent Classification code for “based on characteristics of target signal or of transmission (as countermeasure against surveillance H04K3/827), e.g. using direct sequence spread spectrum or fast frequency hopping (spread spectrum techniques H04B1/69).”
- How many patents are filed under CPC H04K3/25 (based on characteristics of target signal or of transmission (as countermeasure against surveillance H04K3/827), e.g. using direct sequence spread spectrum or fast frequency hopping (spread spectrum techniques H04B1/69))?
- Our database includes 156 publications tagged with this CPC code.
- Is patent activity under CPC H04K3/25 growing?
- Publication counts under this code: 11 in 2024 vs 8 in 2025 (latest complete years).