- 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: 646
10-year publication summary
|
33
|
30
|
33
|
27
|
18
|
16
|
15
|
13
|
10
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| J.A. Woollam Co., Inc. | 143 |
61 |
| KLA-Tencor Corporation | 2518 |
38 |
| Hinds Instruments, Inc. | 25 |
13 |
| DEKA Products Limited Partnership | 1886 |
12 |
| Onto Innovation Inc. | 399 |
11 |
| Samsung Electronics Co., Ltd. | 157557 |
10 |
| Corning Incorporated | 10500 |
9 |
| ASML Netherlands B.V. | 7906 |
9 |
| Tsinghua University | 6212 |
8 |
| Korea Research Institute of Standards and Science | 692 |
8 |
| Sony Corporation | 30208 |
7 |
| Centre National de La Recherche Scientifique | 11016 |
7 |
| Hon Hai Precision Industry Co., Ltd. | 4026 |
7 |
| Raytheon Company | 8457 |
7 |
| The Arizona Board of Regents on Behalf of the University of Arizona | 2292 |
7 |
| Ricoh Company, Ltd. | 13346 |
6 |
| Lockheed Martin Corporation | 3260 |
5 |
| The United States of America as represented by the Secretary of the Navy | 2856 |
5 |
| Jamco Corporation | 173 |
5 |
| Apple Inc. | 58705 |
4 |
| Other owners | 407 |