- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 61/52 - Cooling arrangementsHeating arrangementsMeans for circulating gas or vapour within the discharge space
Patent holdings for IPC class H01J 61/52
Total number of patents in this class: 237
10-year publication summary
|
13
|
14
|
11
|
6
|
16
|
18
|
11
|
7
|
7
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| OSRAM GmbH | 2191 |
13 |
| Ushio Denki Kabushiki Kaisha | 1209 |
13 |
| Heraeus Noblelight GmbH | 123 |
9 |
| KLA Corporation | 1871 |
9 |
| Lumenlabs, LLC | 29 |
9 |
| Koninklijke Philips Electronics N.V. | 7243 |
7 |
| KLA-Tencor Corporation | 2517 |
7 |
| Beijing E-town Semiconductor Technology, Co., Ltd | 305 |
6 |
| Nikon Corporation | 7229 |
5 |
| The Boeing Company | 20196 |
4 |
| Seiko Epson Corporation | 20365 |
4 |
| Osram AG | 286 |
4 |
| Mattson Technology, Inc. | 245 |
4 |
| Signify Holding B.V. | 8146 |
4 |
| Suzhou Lekin Semiconductor Co., Ltd. | 1241 |
4 |
| Excelitas Noblelight GmbH | 98 |
4 |
| Prosperina Ventures LLC | 120 |
4 |
| Led-ip Management, LLC | 822 |
4 |
| ASML Netherlands B.V. | 7987 |
3 |
| OSRAM SYLVANIA Inc. | 628 |
3 |
| Other owners | 117 |