- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 61/44 - Devices characterised by the luminescent material
Patent holdings for IPC class H01J 61/44
Total number of patents in this class: 184
10-year publication summary
|
10
|
8
|
4
|
6
|
8
|
4
|
1
|
9
|
1
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Koninklijke Philips Electronics N.V. | 13133 |
21 |
| General Electric Company | 18133 |
14 |
| Philips Intellectual Property & Standards GmbH | 2395 |
14 |
| Sumitomo Chemical Company, Limited | 8808 |
11 |
| OSRAM GmbH | 2442 |
8 |
| Savant Technologies, LLC | 343 |
5 |
| Merck Patent GmbH | 5909 |
4 |
| Panasonic Corporation | 20786 |
4 |
| Matsushita Electric Industrial Co., Ltd. | 4724 |
4 |
| Ushio Denki Kabushiki Kaisha | 1088 |
4 |
| Xylem Europe GmbH | 204 |
4 |
| Koninklijke Philips N.V. | 22975 |
3 |
| Hamamatsu Photonics K.K. | 4161 |
3 |
| Nichia Corporation | 3394 |
3 |
| LEDVANCE GmbH | 564 |
3 |
| Rhodia Operations | 1645 |
3 |
| Signify Holding B.V. | 6837 |
3 |
| FUJIFILM Corporation | 27102 |
2 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
2 |
| Mitsubishi Chemical Corporation | 4313 |
2 |
| Other owners | 67 |