- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 11/78 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals containing oxygen
Patent holdings for IPC class C09K 11/78
Total number of patents in this class: 239
10-year publication summary
|
2
|
3
|
12
|
5
|
5
|
9
|
9
|
5
|
3
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Ocean's King Lighting Science & Technology Co., Ltd. | 273 |
25 |
| Koninklijke Philips Electronics N.V. | 9235 |
11 |
| Philips Intellectual Property & Standards GmbH | 1869 |
7 |
| Panasonic Intellectual Property Management Co., Ltd. | 32052 |
6 |
| Mitsubishi Chemical Corporation | 4579 |
6 |
| National Institute for Materials Science | 1106 |
6 |
| General Electric Company | 13858 |
5 |
| Murata Manufacturing Co., Ltd. | 24813 |
5 |
| Grirem Advanced Materials Co., Ltd. | 134 |
5 |
| OSRAM SYLVANIA Inc. | 679 |
4 |
| Denka Company Limited | 2629 |
4 |
| Shenzhen Ocean's King Lighting Engineering Co., Ltd. | 46 |
4 |
| Tohoku University | 2824 |
4 |
| Honeywell International Inc. | 13561 |
3 |
| Panasonic Corporation | 20036 |
3 |
| Semiconductor Energy Laboratory Co., Ltd. | 11471 |
3 |
| National University Corporation Nara Institute of Science and Technology | 239 |
3 |
| Suzhou Junnuo New Material Technology Co., Ltd. | 10 |
3 |
| LG Electronics Inc. | 73588 |
2 |
| Merck Patent GmbH | 5767 |
2 |
| Other owners | 128 |