- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 21/68 - Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g. electroluminescence using high frequency electric fields
Patent holdings for IPC class G01N 21/68
Total number of patents in this class: 104
10-year publication summary
|
8
|
13
|
15
|
6
|
7
|
4
|
9
|
6
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tokyo Electron Limited | 12979 |
7 |
| Samsung Electronics Co., Ltd. | 147787 |
6 |
| Hewlett-Packard Development Company, L.P. | 25776 |
4 |
| Horiba Jobin Yvon SAS | 48 |
4 |
| Hitachi High-Tech Science Corporation | 285 |
3 |
| Applied Materials, Inc. | 18932 |
3 |
| Baxter International Inc. | 2415 |
3 |
| Baxter Healthcare S.A. | 1836 |
3 |
| ARKRAY, Inc. | 867 |
3 |
| Imagineering, Inc. | 125 |
3 |
| Servomex Group Limited | 38 |
3 |
| Hitachi High-Tech Corporation | 5396 |
3 |
| Lam Research Corporation | 5311 |
2 |
| Shimadzu Corporation | 6193 |
2 |
| ASM IP Holding B.V. | 2114 |
2 |
| IAS Inc. | 33 |
2 |
| OndaVia, Inc. | 29 |
2 |
| Silixa Ltd. | 95 |
2 |
| SPECTRO Analytical Instruments GmbH | 65 |
2 |
| Seoul National University R&db Foundation | 3678 |
2 |
| Other owners | 43 |