- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 23/2251 - Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or by measuring secondary emission from the material using electron or ion microprobes using incident electron beams, e.g. scanning electron microscopy [SEM]
Patent holdings for IPC class G01N 23/2251
Total number of patents in this class: 830
10-year publication summary
|
20
|
37
|
63
|
75
|
108
|
96
|
110
|
126
|
93
|
55
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi High-Tech Corporation | 5957 |
104 |
| ASML Netherlands B.V. | 8005 |
83 |
| KLA Corporation | 1874 |
42 |
| NuFlare Technology, Inc. | 927 |
37 |
| Applied Materials Israel, Ltd. | 689 |
28 |
| FEI Company | 1062 |
28 |
| Samsung Electronics Co., Ltd. | 158842 |
21 |
| Applied Materials, Inc. | 20552 |
20 |
| KLA-Tencor Corporation | 2517 |
17 |
| Carl Zeiss SMT GmbH | 3364 |
15 |
| Saudi Arabian Oil Company | 14349 |
10 |
| TASMIT, Inc. | 76 |
10 |
| LG Chem, Ltd. | 17967 |
8 |
| Techinsights Inc. | 98 |
8 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 48760 |
7 |
| Carl Zeiss Microscopy GmbH | 1290 |
7 |
| JEOL Ltd. | 625 |
7 |
| JFE Steel Corporation | 7617 |
6 |
| Oxford Instruments NanoTechnology Tools Limited | 142 |
6 |
| The University of Liverpool | 317 |
6 |
| Other owners | 360 |