- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 3/04 - Ion guns
Patent holdings for IPC class H01J 3/04
Total number of patents in this class: 19
10-year publication summary
|
1
|
1
|
1
|
1
|
1
|
0
|
1
|
1
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Massachusetts Institute of Technology | 10057 |
2 |
| Advanced ION Beam Technology, Inc. | 71 |
2 |
| Smiths Detection Montreal Inc. | 56 |
2 |
| Schlumberger Technology Corporation | 10717 |
1 |
| Schlumberger Canada Limited | 7296 |
1 |
| Schlumberger Technology B.v. | 5168 |
1 |
| Schlumberger Holdings Limited | 2828 |
1 |
| Hitachi High-Tech Science Corporation | 290 |
1 |
| Varian Semiconductor Equipment Associates, Inc. | 1231 |
1 |
| Entegris, Inc. | 1868 |
1 |
| JEOL Ltd. | 580 |
1 |
| Prad Research and Development Limited | 2693 |
1 |
| Services Petroliers Schlumberger | 5788 |
1 |
| Zhongshan IBD Technology Co., Ltd. | 7 |
1 |
| Adaptas Solutions Pty Ltd | 27 |
1 |
| Foshan IBD Technology Co., Ltd. | 6 |
1 |
| Other owners | 0 |