- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 21/94 - Investigating contamination, e.g. dust
Patent holdings for IPC class G01N 21/94
Total number of patents in this class: 1236
10-year publication summary
|
106
|
113
|
116
|
103
|
100
|
108
|
81
|
100
|
86
|
48
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Boeing Company | 20193 |
27 |
| Hitachi High-Tech Corporation | 5969 |
24 |
| Altria Client Services LLC | 2467 |
23 |
| KLA-Tencor Corporation | 2517 |
19 |
| Samsung Electronics Co., Ltd. | 159029 |
15 |
| ASML Netherlands B.V. | 8019 |
15 |
| LG Electronics Inc. | 76087 |
13 |
| Carl Zeiss SMT GmbH | 3370 |
13 |
| ASML Holding N.V. | 487 |
12 |
| Halliburton Energy Services, Inc. | 21292 |
10 |
| Robert Bosch GmbH | 44327 |
10 |
| Femtometrix, Inc. | 44 |
10 |
| Applied Materials, Inc. | 20579 |
9 |
| LG Energy Solution, Ltd. | 19461 |
9 |
| Pixart Imaging Inc. | 1746 |
8 |
| Samsung Display Co., Ltd. | 39087 |
7 |
| Schlumberger Technology Corporation | 11940 |
6 |
| 3m Innovative Properties Company | 17455 |
6 |
| Toyota Motor Corporation | 36159 |
6 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 48861 |
6 |
| Other owners | 988 |