- All sections
- G - Physics
- G01J - Measurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet lightcolorimetryradiation pyrometry
- G01J 4/00 - Measuring polarisation of light
Patent holdings for IPC class G01J 4/00
Total number of patents in this class: 692
10-year publication summary
|
60
|
33
|
30
|
33
|
27
|
18
|
16
|
15
|
12
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| J.A. Woollam Co., Inc. | 153 |
69 |
| KLA-Tencor Corporation | 2544 |
40 |
| Hinds Instruments, Inc. | 27 |
14 |
| DEKA Products Limited Partnership | 1767 |
12 |
| Samsung Electronics Co., Ltd. | 146092 |
10 |
| ASML Netherlands B.V. | 7385 |
10 |
| Onto Innovation Inc. | 356 |
10 |
| Corning Incorporated | 10259 |
9 |
| Tsinghua University | 5922 |
8 |
| Korea Research Institute of Standards and Science | 675 |
8 |
| Sony Corporation | 31052 |
7 |
| Centre National de La Recherche Scientifique | 10418 |
7 |
| Hon Hai Precision Industry Co., Ltd. | 4033 |
7 |
| Nikon Corporation | 7163 |
7 |
| Raytheon Company | 8389 |
7 |
| The Arizona Board of Regents on Behalf of the University of Arizona | 2157 |
7 |
| KLA-Tencor Technologies Corporation | 195 |
7 |
| Ricoh Company, Ltd. | 13247 |
6 |
| Industrial Technology Research Institute | 5086 |
5 |
| Lockheed Martin Corporation | 3277 |
5 |
| Other owners | 437 |