- All sections
- G - Physics
- G01J - Measurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet lightcolorimetryradiation pyrometry
- G01J 9/04 - Measuring optical phase differenceDetermining degree of coherenceMeasuring optical wavelength by beating two waves of the same source but of different frequency and measuring the phase shift of the lower frequency obtained
Patent holdings for IPC class G01J 9/04
Total number of patents in this class: 56
10-year publication summary
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4
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4
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6
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8
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5
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2
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1
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4
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2
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Massachusetts Institute of Technology | 10055 |
3 |
| Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V. | 1775 |
3 |
| Bluehalo, LLC | 96 |
3 |
| Electronics and Telecommunications Research Institute | 9394 |
2 |
| Raytheon Company | 8386 |
2 |
| Oki Electric Industry Co., Ltd. | 1588 |
2 |
| Nippon Telegraph and Telephone Corporation | 17346 |
2 |
| National Institute of Advanced Industrial Science and Technology | 3802 |
2 |
| Dublin City University | 165 |
2 |
| Fibercom S.L. | 4 |
2 |
| Mitutoyo Corporation | 1250 |
2 |
| Technische Universitat Darmstadt | 264 |
2 |
| The Regents of the University of California | 19929 |
1 |
| Koninklijke Philips Electronics N.V. | 9618 |
1 |
| Thales SA | 2338 |
1 |
| Nokia Solutions And Networks Oy | 6601 |
1 |
| Ciena Corporation | 2034 |
1 |
| 8 Rivers Capital, LLC | 235 |
1 |
| Aragon Photonics Labs, S.L. | 4 |
1 |
| Aragon Photonics Labs S.L.U. | 2 |
1 |
| Other owners | 21 |