- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 61/52 - Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
Patent holdings for IPC class H01J 61/52
Total number of patents in this class: 284
10-year publication summary
|
24
|
20
|
13
|
14
|
11
|
6
|
16
|
18
|
11
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Koninklijke Philips Electronics N.V. | 13133 |
20 |
| OSRAM GmbH | 2442 |
16 |
| Heraeus Noblelight GmbH | 233 |
14 |
| Ushio Denki Kabushiki Kaisha | 1088 |
13 |
| KLA Corporation | 1223 |
9 |
| Lumenlabs, LLC | 28 |
9 |
| Ideal Industries Lighting LLC | 1168 |
8 |
| Beijing E-town Semiconductor Technology, Co., Ltd | 246 |
8 |
| Nikon Corporation | 7162 |
7 |
| KLA-Tencor Corporation | 2574 |
7 |
| Mattson Technology, Inc. | 231 |
6 |
| Philips Intellectual Property & Standards GmbH | 2395 |
6 |
| The Boeing Company | 19843 |
4 |
| Seiko Epson Corporation | 18724 |
4 |
| Osram AG | 305 |
4 |
| Signify Holding B.V. | 6837 |
4 |
| Ideal Industries, LLC | 87 |
4 |
| Suzhou Lekin Semiconductor Co., Ltd. | 1710 |
4 |
| General Electric Company | 18133 |
3 |
| Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | 166 |
3 |
| Other owners | 131 |