- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 1/20 - Cathodes heated indirectly by an electric currentCathodes heated by electron or ion bombardment
Patent holdings for IPC class H01J 1/20
Total number of patents in this class: 23
10-year publication summary
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0
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1
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1
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3
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1
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2
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1
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3
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4
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Applied Materials, Inc. | 18589 |
2 |
| Raytheon Company | 8393 |
2 |
| Elve Inc. | 30 |
2 |
| Hitachi, Ltd. | 15476 |
1 |
| Koninklijke Philips Electronics N.V. | 9696 |
1 |
| The Board of Trustees of the Leland Stanford Junior University | 6402 |
1 |
| OSRAM GmbH | 2384 |
1 |
| Applied Physics Technologies, Inc. | 14 |
1 |
| Axcelis Technologies, Inc. | 408 |
1 |
| Beijing University of Technology | 492 |
1 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 628 |
1 |
| Kaufman & Robinson, Inc. | 14 |
1 |
| Research & Business Foundation Sungkyunkwan University | 1933 |
1 |
| Siemens Healthcare GmbH | 493 |
1 |
| Southeast University | 1406 |
1 |
| Sumitomo Heavy Industries ION Technology Co., Ltd. | 113 |
1 |
| GE Precision Healthcare LLC | 5448 |
1 |
| Freemelt AB | 36 |
1 |
| Seongsik Chang | 2 |
1 |
| Nanjing Sanle Group Co., Ltd. | 1 |
1 |
| Other owners | 0 |