User positioning method, information push method, and related apparatus
US-10757537-B2 · Aug 25, 2020 · US
Systems using reradiation of acoustic waves, e.g. IFF, i.e. identification of friend or foe
Systems using reradiation of acoustic waves, e.g. IFF, i.e. identification of friend or foe · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01S15/74 |
| Official title | Systems using reradiation of acoustic waves, e.g. IFF, i.e. identification of friend or foe |
| Display label | Systems using reradiation of acoustic waves, e.g. IFF, i.e. identification of friend or foe |
| Total patents | 134 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 12 |
| 2017 | 11 |
| 2018 | 10 |
| 2019 | 15 |
| 2020 | 13 |
| 2021 | 15 |
| 2022 | 9 |
| 2023 | 21 |
| 2024 | 11 |
| 2025 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Detecting transportation company trips in a vehicle based upon on-board audio signals
US-10580085-B1 · Mar 3, 2020 · US
Ultrasonic locating
US-10518806-B1 · Dec 31, 2019 · US
System for determining distance between fixed and mobile endpoints and related methods
US-2019391262-A1 · Dec 26, 2019 · US
Evaluating subsea geodetic data
US-2019339414-A1 · Nov 7, 2019 · US
Underwater acoustic leaky wave antenna
US-10466353-B2 · Nov 5, 2019 · US
System and Method for Autonomous Tracking and Imaging of a Target
US-2019279067-A1 · Sep 12, 2019 · US
Diver Navigation, Information and Safety Buoy
US-2019185122-A1 · Jun 20, 2019 · US
User positioning method, information push method, and related apparatus
US-2019191276-A1 · Jun 20, 2019 · US
Distance estimating system
US-2019179004-A1 · Jun 13, 2019 · US
Detecting transportation company trips in a vehicle based upon on-board audio signals
US-10304142-B1 · May 28, 2019 · US
System and method for autonomous tracking and imaging of a target
US-10303995-B2 · May 28, 2019 · US
Underwater acoustic leaky wave antenna
US-2019086536-A1 · Mar 21, 2019 · US
Transceiver devices and related communication and navigation methods
US-10227116-B2 · Mar 12, 2019 · US
Mobile terminal, wearable terminal, sonic distance measurement system, and sonic distance measurement method
US-10197673-B2 · Feb 5, 2019 · US
Semi-passive transponder
US-2019018135-A1 · Jan 17, 2019 · US
Data readout via reflected ultrasound signals
US-10168427-B2 · Jan 1, 2019 · US
Information processing method, electronic device and computer storage medium
US-10165233-B2 · Dec 25, 2018 · US
Mapping positions of devices using audio
US-10145947-B2 · Dec 4, 2018 · US
Positioning system and positioning method
US-2018329057-A1 · Nov 15, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01S15/74?
- CPC G01S15/74 is the Cooperative Patent Classification code for “Systems using reradiation of acoustic waves, e.g. IFF, i.e. identification of friend or foe.”
- How many patents are filed under CPC G01S15/74 (Systems using reradiation of acoustic waves, e.g. IFF, i.e. identification of friend or foe)?
- Our database includes 134 publications tagged with this CPC code.
- Is patent activity under CPC G01S15/74 growing?
- Publication counts under this code: 11 in 2024 vs 7 in 2025 (latest complete years).