Communication systems for water vehicles
US-2016356908-A1 · Dec 8, 2016 · US
Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04B13/02 |
| Official title | Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy |
| Display label | Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy |
| Total patents | 427 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 31 |
| 2016 | 40 |
| 2017 | 32 |
| 2018 | 35 |
| 2019 | 46 |
| 2020 | 42 |
| 2021 | 35 |
| 2022 | 45 |
| 2023 | 42 |
| 2024 | 48 |
| 2025 | 24 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Downhole time domain reflectometry with optical components
US-9512717-B2 · Dec 6, 2016 · US
High-bandwidth underwater data communication system
US-2016352436-A1 · Dec 1, 2016 · US
High-bandwidth underwater data communication system
US-9490911-B2 · Nov 8, 2016 · US
Water environment mobile robots
US-2016272291-A1 · Sep 22, 2016 · US
Repeater, excitation light supply device used for the same, and excitation light supply method
US-9444219-B2 · Sep 13, 2016 · US
Optical Based Pose Detection For Multiple Unmanned Underwater Vehicles
US-2016253906-A1 · Sep 1, 2016 · US
Footwear seismic communication system
US-9432130-B2 · Aug 30, 2016 · US
Undersea laser communication using polarization and wavelength modulation
US-9419727-B1 · Aug 16, 2016 · US
Transmitting electrical power and data
US-2016233924-A1 · Aug 11, 2016 · US
Underground data communication apparatus, system, and method
US-2016225248-A1 · Aug 4, 2016 · US
Collaborative telemetry
US-2016227298-A1 · Aug 4, 2016 · US
Data transfer apparatus
US-2016226531-A1 · Aug 4, 2016 · US
High-bandwidth underwater data communication system
US-2016211923-A1 · Jul 21, 2016 · US
Acoustic frequency interrogation and data system
US-9397759-B2 · Jul 19, 2016 · US
System and method for enhancing speech of a diver wearing a mouthpiece
US-9385817-B2 · Jul 5, 2016 · US
Transmission device, and fender provided therewith
US-9385761-B2 · Jul 5, 2016 · US
Methodology for re-establishing communication, navigation, and power links in a marine environment
US-2016173322-A1 · Jun 16, 2016 · US
Interfacing marine survey devices using acoustic transducers
US-9354344-B2 · May 31, 2016 · US
System for providing information and associated devices
US-9351106-B2 · May 24, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04B13/02?
- CPC H04B13/02 is the Cooperative Patent Classification code for “Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy.”
- How many patents are filed under CPC H04B13/02 (Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy)?
- Our database includes 427 publications tagged with this CPC code.
- Is patent activity under CPC H04B13/02 growing?
- Publication counts under this code: 48 in 2024 vs 24 in 2025 (latest complete years).