- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 31/12 - Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
Patent holdings for IPC class H01J 31/12
Total number of patents in this class: 217
10-year publication summary
|
11
|
3
|
6
|
2
|
1
|
1
|
0
|
1
|
1
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
47 |
| Hon Hai Precision Industry Co., Ltd. | 4157 |
20 |
| Tsinghua University | 5426 |
20 |
| Canon Kabushiki Kaisha | 6884 |
11 |
| National Institute for Materials Science | 1108 |
10 |
| E. I. du Pont de Nemours and Company | 4345 |
7 |
| Sumitomo Chemical Company, Limited | 8808 |
7 |
| Asahi Glass Company, Limited | 2985 |
6 |
| Fuzhou University | 262 |
5 |
| Semiconductor Energy Laboratory Co., Ltd. | 10902 |
4 |
| NGK Insulators, Ltd. | 4589 |
4 |
| Panasonic Corporation | 20786 |
3 |
| Thomson Licensing | 4027 |
3 |
| Pioneer Corporation | 4843 |
3 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
3 |
| Boe Technology Group Co., Ltd. | 35384 |
3 |
| Beijing BOE Optoelectronics Technology Co., Ltd. | 3779 |
3 |
| Ocean's King Lighting Science & Technology Co., Ltd. | 273 |
3 |
| Tohoku University | 2526 |
3 |
| Sharp Kabushiki Kaisha | 18957 |
3 |
| Other owners | 49 |