- 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: 1092
10-year publication summary
|
88
|
105
|
113
|
116
|
102
|
97
|
105
|
74
|
87
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Boeing Company | 19915 |
26 |
| Altria Client Services LLC | 2055 |
23 |
| Hitachi High-Tech Corporation | 5065 |
22 |
| KLA-Tencor Corporation | 2550 |
19 |
| Samsung Electronics Co., Ltd. | 139302 |
13 |
| Carl Zeiss SMT GmbH | 2819 |
13 |
| ASML Holding N.V. | 518 |
11 |
| ASML Netherlands B.V. | 7179 |
11 |
| Halliburton Energy Services, Inc. | 20449 |
10 |
| LG Electronics Inc. | 71074 |
10 |
| Robert Bosch GmbH | 41823 |
10 |
| Applied Materials, Inc. | 17779 |
9 |
| Femtometrix, Inc. | 39 |
9 |
| Pixart Imaging Inc. | 1617 |
7 |
| Schlumberger Technology Corporation | 10284 |
6 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 40644 |
6 |
| Seagate Technology LLC | 3929 |
6 |
| Atonometrics, Inc. | 29 |
6 |
| Steris Inc. | 133 |
6 |
| 3m Innovative Properties Company | 17969 |
5 |
| Other owners | 864 |