- 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: 259
10-year publication summary
|
20
|
13
|
14
|
11
|
6
|
16
|
18
|
11
|
7
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| OSRAM GmbH | 2389 |
16 |
| Ushio Denki Kabushiki Kaisha | 1172 |
13 |
| Koninklijke Philips Electronics N.V. | 10060 |
12 |
| Heraeus Noblelight GmbH | 131 |
9 |
| KLA Corporation | 1503 |
9 |
| Lumenlabs, LLC | 29 |
9 |
| Ideal Industries Lighting LLC | 1134 |
8 |
| Nikon Corporation | 7155 |
7 |
| KLA-Tencor Corporation | 2546 |
7 |
| Beijing E-town Semiconductor Technology, Co., Ltd | 277 |
6 |
| The Boeing Company | 19994 |
4 |
| Seiko Epson Corporation | 19261 |
4 |
| Osram AG | 302 |
4 |
| Mattson Technology, Inc. | 228 |
4 |
| Philips Intellectual Property & Standards GmbH | 1989 |
4 |
| Signify Holding B.V. | 7407 |
4 |
| Ideal Industries, LLC | 85 |
4 |
| Suzhou Lekin Semiconductor Co., Ltd. | 1428 |
4 |
| Excelitas Noblelight GmbH | 97 |
4 |
| General Electric Company | 13823 |
3 |
| Other owners | 124 |