- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 21/956 - Inspecting patterns on the surface of objects
Patent holdings for IPC class G01N 21/956
Total number of patents in this class: 2496
10-year publication summary
|
169
|
197
|
173
|
206
|
249
|
227
|
197
|
177
|
165
|
47
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ASML Netherlands B.V. | 6816 |
259 |
| KLA-Tencor Corporation | 2574 |
223 |
| Hitachi High-Technologies Corporation | 2034 |
159 |
| Hitachi High-Tech Corporation | 4424 |
122 |
| KLA Corporation | 1223 |
112 |
| Nikon Corporation | 7162 |
51 |
| Samsung Electronics Co., Ltd. | 131630 |
50 |
| NuFlare Technology, Inc. | 770 |
47 |
| Koh Young Technology Inc. | 332 |
42 |
| Carl Zeiss SMT GmbH | 2646 |
35 |
| Tokyo Electron Limited | 11599 |
34 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
33 |
| ASML Holding N.V. | 542 |
30 |
| Nova Ltd. | 145 |
29 |
| Sumco Corporation | 1116 |
25 |
| Omron Corporation | 6968 |
22 |
| Applied Materials Israel, Ltd. | 549 |
21 |
| CKD Corporation | 424 |
21 |
| Sharp Kabushiki Kaisha | 18957 |
21 |
| Corning Incorporated | 9932 |
20 |
| Other owners | 1140 |