Astrophysical timing derived from photometric relative phase measurements of periodic stellar variability
US-12517468-B2 · Jan 6, 2026 · US
using optical means
using optical means · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G04F13/02 |
| Official title | using optical means |
| Display label | using optical means |
| Total patents | 36 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 8 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 1 |
| 2021 | 6 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Estimating time outdoors and in daylight based on ambient light, motion and location sensing
US-2025103011-A1 · Mar 27, 2025 · US
Astrophysical Timing Derived from Photometric Relative Phase Measurements of Periodic Stellar Variability
US-2024427295-A1 · Dec 26, 2024 · US
Systems and methods for indicating the time elapsed since the occurrence of a triggering event
US-2024077837-A1 · Mar 7, 2024 · US
Method for monitoring an electrical cable accessory system
US-11908594-B2 · Feb 20, 2024 · US
Systems and methods for indicating the time elapsed since the occurrence of a triggering event
US-11853013-B2 · Dec 26, 2023 · US
Electronic device that can be worn on the body and method for producing same
US-11771333-B2 · Oct 3, 2023 · US
Time measuring device, fluorescence lifetime measuring device, and time measuring method
US-2023288336-A1 · Sep 14, 2023 · US
Electronic device that can be worn on the body and method for producing same
US-11344212-B2 · May 31, 2022 · US
Electrical cable accessory systems and methods including same
US-2022059259-A1 · Feb 24, 2022 · US
Systems and methods for indicating the time elapsed since the occurrence of a triggering event
US-2021389731-A1 · Dec 16, 2021 · US
Methods and apparatus for selective histogramming
US-2021294274-A1 · Sep 23, 2021 · US
Electronic device that can be worn on the body and method for producing same
US-2021271208-A1 · Sep 2, 2021 · US
Electronic device that can be worn on the body and method for producing same
US-2021269358-A1 · Sep 2, 2021 · US
Electronic device that can be worn on the body and method for producing same
US-2021251509-A1 · Aug 19, 2021 · US
Methods and apparatus for selective histogramming
US-10895848-B1 · Jan 19, 2021 · US
Control apparatus for welding and control method thereof
US-2019314204-A1 · Oct 17, 2019 · US
External element with a light sensor
US-10146185-B2 · Dec 4, 2018 · US
Systems and Methods for Use in Tracking Usage of Assets Based on Sensors Associated With the Assets
US-2018315032-A1 · Nov 1, 2018 · US
Apparatus for measuring response time, system for measuring response time and method for measuring response time
US-9933755-B2 · Apr 3, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G04F13/02?
- CPC G04F13/02 is the Cooperative Patent Classification code for “using optical means.”
- How many patents are filed under CPC G04F13/02 (using optical means)?
- Our database includes 36 publications tagged with this CPC code.
- Is patent activity under CPC G04F13/02 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).