Low-coherence interferometer with surface power compensation
US-12305981-B2 · May 20, 2025 · US
using a second interferometer before or after measuring interferometer
using a second interferometer before or after measuring interferometer · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01B9/02065 |
| Official title | {using a second interferometer before or after measuring interferometer} |
| Display label | using a second interferometer before or after measuring interferometer |
| Total patents | 25 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 3 |
| 2017 | 3 |
| 2018 | 3 |
| 2019 | 3 |
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Interferometer system and lithographic apparatus
US-12305979-B2 · May 20, 2025 · US
Method and device for measuring interfaces of an optical element
US-2024402039-A1 · Dec 5, 2024 · US
Interferometer system and lithographic apparatus
US-2023332880-A1 · Oct 19, 2023 · US
Low-coherence interferometer with surface power compensation
US-2023160686-A1 · May 25, 2023 · US
Phase noise compensation system, and method
US-11635499-B2 · Apr 25, 2023 · US
Scanning probe microscopy system for and method of mapping nanostructures on the surface of a sample
US-11320454-B2 · May 3, 2022 · US
Low-coherence reflectometry method and device employing time-frequency detection
US-11226188-B2 · Jan 18, 2022 · US
Cascade Fourier domain optical coherence tomography
US-11098999-B2 · Aug 24, 2021 · US
Low-coherence reflectometry method and device employing time-frequency detection
US-2021080246-A1 · Mar 18, 2021 · US
Cascade fourier domain optical coherence tomography
US-2019195615-A1 · Jun 27, 2019 · US
Phase noise compensation system, and method
US-2019195994-A1 · Jun 27, 2019 · US
Device For Optically Measuring An Object
US-2019078870-A1 · Mar 14, 2019 · US
Optical thickness measuring device and method
US-2018299256-A1 · Oct 18, 2018 · US
Submersible N-wavelength interrogation system and method for multiple wavelength interferometers
US-10078050-B2 · Sep 18, 2018 · US
Optical imaging device with image defect determination
US-9996014-B2 · Jun 12, 2018 · US
Interferometric distance sensing device and method with less dependency on environment disturbances on a fiber
US-9791259-B2 · Oct 17, 2017 · US
Interferometric distance measuring method for measuring surfaces, and such a measuring arrangement
US-9677870-B2 · Jun 13, 2017 · US
Submersible n-wavelength interrogation system and method for multiple wavelength interferometers
US-2017030830-A1 · Feb 2, 2017 · US
Optical imaging device with image defect determination
US-2016246182-A1 · Aug 25, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01B9/02065?
- CPC G01B9/02065 is the Cooperative Patent Classification code for “using a second interferometer before or after measuring interferometer.”
- How many patents are filed under CPC G01B9/02065 (using a second interferometer before or after measuring interferometer)?
- Our database includes 25 publications tagged with this CPC code.
- Is patent activity under CPC G01B9/02065 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).