- All sections
- G - Physics
- G01J - Measurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light; colorimetry; radiation pyrometry
- G01J 3/40 - Measuring the intensity of spectral lines by determining density of a photograph of the spectrum; Spectrography
Patent holdings for IPC class G01J 3/40
Total number of patents in this class: 136
10-year publication summary
|
8
|
9
|
8
|
10
|
14
|
9
|
7
|
5
|
7
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20165 |
10 |
| Regents of the University of Minnesota | 2620 |
8 |
| Canon Inc. | 36841 |
4 |
| Thermo Electron Scientific Instruments LLC | 169 |
3 |
| The General Hospital Corporation | 4517 |
3 |
| KLA-Tencor Corporation | 2574 |
3 |
| Shenzhen University | 1544 |
3 |
| Flying Gybe Inc. | 7 |
3 |
| NEC Corporation | 32703 |
2 |
| Hewlett-Packard Development Company, L.P. | 28538 |
2 |
| FUJIFILM Corporation | 27102 |
2 |
| Olympus Corporation | 13667 |
2 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
2 |
| Harris Corporation | 1591 |
2 |
| ChemImage Corporation | 225 |
2 |
| LI-COR, Inc. | 169 |
2 |
| The United States of America as represented by the Administrator of the National Aeronautics and Space Administration | 527 |
2 |
| The University of Chicago | 1282 |
2 |
| Westboro Photonics Inc. | 8 |
2 |
| Akash Systems, Inc. | 15 |
2 |
| Other owners | 75 |