- 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: 1029
10-year publication summary
|
80
|
88
|
105
|
113
|
116
|
101
|
97
|
104
|
70
|
30
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Boeing Company | 19843 |
26 |
| Altria Client Services LLC | 1866 |
23 |
| Hitachi High-Tech Corporation | 4424 |
22 |
| KLA-Tencor Corporation | 2574 |
19 |
| Carl Zeiss SMT GmbH | 2646 |
13 |
| Samsung Electronics Co., Ltd. | 131630 |
11 |
| ASML Holding N.V. | 542 |
11 |
| Halliburton Energy Services, Inc. | 20165 |
10 |
| LG Electronics Inc. | 69257 |
10 |
| ASML Netherlands B.V. | 6816 |
10 |
| Robert Bosch GmbH | 40953 |
9 |
| Applied Materials, Inc. | 16587 |
9 |
| Femtometrix, Inc. | 40 |
9 |
| Seagate Technology LLC | 4228 |
7 |
| Pixart Imaging Inc. | 1581 |
7 |
| Schlumberger Technology Corporation | 9690 |
6 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
6 |
| Atonometrics, Inc. | 27 |
6 |
| Steris Inc. | 146 |
6 |
| 3m Innovative Properties Company | 18406 |
5 |
| Other owners | 804 |