- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 61/20 - Selection of substances for gas fillingsSpecified operating pressure or temperature having a metallic vapour as the principal constituent mercury vapour
Patent holdings for IPC class H01J 61/20
Total number of patents in this class: 93
10-year publication summary
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5
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4
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6
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8
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3
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2
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3
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3
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1
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1
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Iwasaki Electric Co., Ltd. | 152 |
9 |
| Harison Toshiba Lighting Corp. | 36 |
6 |
| Panasonic Corporation | 20180 |
5 |
| OSRAM GmbH | 2389 |
5 |
| Heraeus Noblelight GmbH | 131 |
4 |
| KLA-Tencor Corporation | 2546 |
4 |
| General Electric Company | 13823 |
3 |
| Ceravision Limited | 42 |
3 |
| Trojan Technologies Inc. | 53 |
3 |
| Umicore AG & Co. KG | 855 |
3 |
| Signify Holding B.V. | 7407 |
3 |
| Koninklijke Philips Electronics N.V. | 10060 |
2 |
| Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | 90 |
2 |
| SAES Getters S.p.A. | 318 |
2 |
| Xylem IP Management S.a.r.l. | 34 |
2 |
| KLA Corporation | 1503 |
2 |
| Canon Inc. | 39365 |
1 |
| Matsushita Electric Industrial Co., Ltd. | 1871 |
1 |
| Applied Materials, Inc. | 18383 |
1 |
| Lam Research Corporation | 5169 |
1 |
| Other owners | 31 |