- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 9/44 - Factory adjustment of completed discharge tubes or lamps to comply with desired tolerances
Patent holdings for IPC class H01J 9/44
Total number of patents in this class: 14
10-year publication summary
|
1
|
1
|
1
|
0
|
1
|
0
|
0
|
0
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Matsushita Electric Industrial Co., Ltd. | 4724 |
2 |
| Honeywell International Inc. | 13799 |
1 |
| Hitachi, Ltd. | 16452 |
1 |
| Electronics and Telecommunications Research Institute | 8830 |
1 |
| Mitsubishi Electric Corporation | 43934 |
1 |
| Tokyo Electron Limited | 11599 |
1 |
| Central Glass Company, Limited | 1244 |
1 |
| Iwasaki Electric Co., Ltd. | 151 |
1 |
| Silicon Works Co., Ltd. | 506 |
1 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
1 |
| Kochi Fel Co., Ltd. | 6 |
1 |
| Zhongshan City Okes Lighting & Electrical Appliance Compeny Limited | 1 |
1 |
| Niterra Co., Ltd. | 1122 |
1 |
| Other owners | 0 |