Device for transmitting a watch message
US-2025208586-A1 · Jun 26, 2025 · US
Optical measuring and testing apparatus
Optical measuring and testing apparatus · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G04D7/004 |
| Official title | {Optical measuring and testing apparatus} |
| Display label | Optical measuring and testing apparatus |
| Total patents | 68 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 5 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 4 |
| 2020 | 5 |
| 2021 | 10 |
| 2022 | 8 |
| 2023 | 13 |
| 2024 | 10 |
| 2025 | 9 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Timepiece assembly comprising a watch and a system for correcting the time
US-12292715-B2 · May 6, 2025 · US
Electronic timepiece
US-2024427294-A1 · Dec 26, 2024 · US
Device for measuring the humidity in the internal volume of a watch case
US-2024410828-A1 · Dec 12, 2024 · US
Assembly for measuring the relative humidity level inside a watch case
US-12117777-B2 · Oct 15, 2024 · US
Horological setting machine and setting method
US-12105477-B2 · Oct 1, 2024 · US
Electronic timepiece, hand position detection method and storage medium
US-2024310789-A1 · Sep 19, 2024 · US
Smart automatic watch winding-mechanism with watch identification
US-12066792-B2 · Aug 20, 2024 · US
Watch dial comprising a lighting device
US-2024210883-A1 · Jun 27, 2024 · US
Device for winding or setting and for verifying a watch
US-12019405-B2 · Jun 25, 2024 · US
Magnifying device with multiple magnifications
US-11994659-B2 · May 28, 2024 · US
Device for illuminating luminescent watch displays
US-11934152-B2 · Mar 19, 2024 · US
System and method for determining at least one parameter relating to an angular movement of an arbor
US-11762336-B2 · Sep 19, 2023 · US
Device for measuring a horological component
US-11720065-B2 · Aug 8, 2023 · US
Watch winding and time-setting device
US-11687037-B2 · Jun 27, 2023 · US
Universal device for the preparation of a watch
US-11669047-B2 · Jun 6, 2023 · US
Universal watch winding and time-setting device
US-11650546-B2 · May 16, 2023 · US
Timepiece assembly comprising a watch and a system for correcting the time
US-2023132978-A1 · May 4, 2023 · US
Electronic watchmaker's loupe, electronic watchmaker's loupe assembly and method for carrying out a check of a watch product, in particular a watch mechanism
US-2023138560-A1 · May 4, 2023 · US
Receptacle for horological assembly
US-11640143-B2 · May 2, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G04D7/004?
- CPC G04D7/004 is the Cooperative Patent Classification code for “Optical measuring and testing apparatus.”
- How many patents are filed under CPC G04D7/004 (Optical measuring and testing apparatus)?
- Our database includes 68 publications tagged with this CPC code.
- Is patent activity under CPC G04D7/004 growing?
- Publication counts under this code: 10 in 2024 vs 9 in 2025 (latest complete years).