- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 1/20 - Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
Patent holdings for IPC class H01J 1/20
Total number of patents in this class: 21
10-year publication summary
|
0
|
0
|
1
|
1
|
3
|
1
|
2
|
0
|
3
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ASML Netherlands B.V. | 6816 |
2 |
| Hitachi, Ltd. | 16452 |
1 |
| Koninklijke Philips Electronics N.V. | 13133 |
1 |
| Applied Materials, Inc. | 16587 |
1 |
| Raytheon Company | 8535 |
1 |
| OSRAM GmbH | 2442 |
1 |
| Applied Physics Technologies, Inc. | 12 |
1 |
| Axcelis Technologies, Inc. | 429 |
1 |
| Beijing University of Technology | 437 |
1 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 680 |
1 |
| Kaufman & Robinson, Inc. | 14 |
1 |
| Research & Business Foundation Sungkyunkwan University | 1640 |
1 |
| Siemens Healthcare GmbH | 938 |
1 |
| Southeast University | 1148 |
1 |
| Sumitomo Heavy Industries ION Technology Co., Ltd. | 96 |
1 |
| GE Precision Healthcare LLC | 1580 |
1 |
| Freemelt AB | 32 |
1 |
| Seongsik Chang | 2 |
1 |
| Nanjing Sanle Group Co., Ltd. | 1 |
1 |
| Elve Inc. | 13 |
1 |
| Other owners | 0 |