- All sections
- G - Physics
- G01J - Measurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet lightcolorimetryradiation pyrometry
- G01J 1/20 - Photometry, e.g. photographic exposure meter by comparison with reference light or electric value intensity of the measured or reference value being varied to equalise their effects at the detector, e.g. by varying incidence angle
Patent holdings for IPC class G01J 1/20
Total number of patents in this class: 154
10-year publication summary
|
15
|
5
|
4
|
3
|
3
|
1
|
3
|
0
|
5
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Lockheed Martin Corporation | 3272 |
6 |
| The Boeing Company | 20098 |
4 |
| Raytheon Company | 8387 |
4 |
| Nlight Defense Systems, Inc. | 5 |
4 |
| Halliburton Energy Services, Inc. | 20937 |
3 |
| 3m Innovative Properties Company | 17812 |
3 |
| Industrial Technology Research Institute | 5082 |
3 |
| Harris Corporation | 1420 |
3 |
| AccuFlux Inc. | 6 |
3 |
| The Charles Stark Draper Laboratory, Inc. | 931 |
3 |
| Gigaphoton Inc. | 1240 |
3 |
| OmniVision Technologies, Inc. | 1557 |
3 |
| National Technology & Engineering Solutions of Sandia, LLC | 1905 |
3 |
| Canon Inc. | 40280 |
2 |
| Panasonic Intellectual Property Management Co., Ltd. | 31756 |
2 |
| Aptina Imaging Corporation | 453 |
2 |
| Northrop Grumman Systems Corporation | 2935 |
2 |
| California Institute of Technology | 3988 |
2 |
| AMO Manufacturing USA, LLC | 67 |
2 |
| Dimensional Photonics International, Inc. | 12 |
2 |
| Other owners | 95 |