- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 21/21 - Polarisation-affecting properties
Patent holdings for IPC class G01N 21/21
Total number of patents in this class: 1445
10-year publication summary
|
122
|
128
|
110
|
136
|
147
|
124
|
115
|
101
|
123
|
63
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| KLA-Tencor Corporation | 2560 |
77 |
| KLA Corporation | 1311 |
37 |
| J.A. Woollam Co., Inc. | 163 |
34 |
| Samsung Electronics Co., Ltd. | 135249 |
30 |
| Onto Innovation Inc. | 345 |
27 |
| Sony Corporation | 31863 |
24 |
| Korea Research Institute of Standards and Science | 646 |
23 |
| ASML Netherlands B.V. | 6969 |
22 |
| Halliburton Energy Services, Inc. | 20206 |
15 |
| FUJIFILM Corporation | 27430 |
14 |
| Ricoh Company, Ltd. | 13066 |
14 |
| Centre National de La Recherche Scientifique | 9798 |
12 |
| Koninklijke Philips N.V. | 23367 |
11 |
| Nxgen Partners IP, LLC | 134 |
10 |
| Applied Materials, Inc. | 17120 |
9 |
| DEKA Products Limited Partnership | 1674 |
9 |
| Ecole Polytechnique | 315 |
9 |
| Sony Group Corporation | 11577 |
9 |
| Corning Incorporated | 9972 |
8 |
| Wisconsin Alumni Research Foundation | 3778 |
8 |
| Other owners | 1043 |