Method and device for measuring speed of permanent magnet synchronous motor
US-10451647-B2 · Oct 22, 2019 · US
delivered by photo-electric detectors
delivered by photo-electric detectors · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01P3/486 |
| Official title | delivered by photo-electric detectors |
| Display label | delivered by photo-electric detectors |
| Total patents | 112 |
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 | 11 |
| 2017 | 11 |
| 2018 | 19 |
| 2019 | 13 |
| 2020 | 12 |
| 2021 | 9 |
| 2022 | 9 |
| 2023 | 6 |
| 2024 | 6 |
| 2025 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for controlling rotating apparatus and electronic device thereof
US-10401809-B2 · Sep 3, 2019 · US
Rotary atomizer
US-2019247873-A1 · Aug 15, 2019 · US
Device for measuring the speeds of rotation of at least two wheels of an aircraft undercarriage
US-2019178905-A1 · Jun 13, 2019 · US
Optical Encoder for Detecting Crown Movement
US-2019170541-A1 · Jun 6, 2019 · US
Passenger-transporting system with a device for determining the operating state
US-10294080-B2 · May 21, 2019 · US
Sensor device for a rolling bearing and rolling bearing arrangement comprising such a sensor device
US-10295557-B2 · May 21, 2019 · US
Drop countermeasures for electronic device
US-10291279-B2 · May 14, 2019 · US
Optical encoder for detecting rotational and axial movement
US-10190891-B1 · Jan 29, 2019 · US
Fan, and rotational speed detection method
US-2018372114-A1 · Dec 27, 2018 · US
Metering device for a fluid
US-10155242-B2 · Dec 18, 2018 · US
Generating and/or encoding rotational data for a mechanical element over a digital network
US-2018338192-A1 · Nov 22, 2018 · US
Multi-function speed sensor
US-10119985-B2 · Nov 6, 2018 · US
Spool brake device for dual-bearing reel
US-10117424-B2 · Nov 6, 2018 · US
Rotation detection device, toner conveyance device, and image forming apparatus including the same
US-10088777-B2 · Oct 2, 2018 · US
Passenger-transporting system with a device for determining the operating state
US-2018244501-A1 · Aug 30, 2018 · US
Braking system
US-10060475-B2 · Aug 28, 2018 · US
Digital period divider
US-10048089-B2 · Aug 14, 2018 · US
Methods and apparatus for multi-mode motor speed calculation using digital hall effect sensors
US-10044302-B2 · Aug 7, 2018 · US
Methods and apparatus for multi-mode motor speed calculation using digital hall effect sensors
US-2018198389-A1 · Jul 12, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01P3/486?
- CPC G01P3/486 is the Cooperative Patent Classification code for “delivered by photo-electric detectors.”
- How many patents are filed under CPC G01P3/486 (delivered by photo-electric detectors)?
- Our database includes 112 publications tagged with this CPC code.
- Is patent activity under CPC G01P3/486 growing?
- Publication counts under this code: 6 in 2024 vs 5 in 2025 (latest complete years).