- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 17/20 - Selection of substances for gas fillings; Specified operating pressures or temperatures
Patent holdings for IPC class H01J 17/20
Total number of patents in this class: 36
10-year publication summary
|
4
|
0
|
0
|
2
|
2
|
0
|
0
|
1
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Ushio Denki Kabushiki Kaisha | 1088 |
4 |
| Matsushita Electric Industrial Co., Ltd. | 4724 |
3 |
| Lumileds LLC | 1827 |
3 |
| OSRAM SYLVANIA Inc. | 742 |
2 |
| Shinoda Plasma Co., Ltd. | 25 |
2 |
| General Electric Company | 18133 |
1 |
| LG Display Co., Ltd. | 11907 |
1 |
| Toshiba Corporation | 12017 |
1 |
| Panasonic Corporation | 20786 |
1 |
| Hitachi, Ltd. | 16452 |
1 |
| Industrial Technology Research Institute | 4898 |
1 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
1 |
| Massachusetts Institute of Technology | 9795 |
1 |
| Hamamatsu Photonics K.K. | 4161 |
1 |
| Advanced Lighting Technologies, Inc. | 23 |
1 |
| College of William and Mary | 26 |
1 |
| Deposition Sciences, Inc. | 16 |
1 |
| Hanovia Limited | 18 |
1 |
| Harison Toshiba Lighting Corp. | 48 |
1 |
| Heraeus Noblelight GmbH | 233 |
1 |
| Other owners | 7 |