- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications 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: 265
10-year publication summary
|
16
|
3
|
3
|
12
|
5
|
6
|
10
|
9
|
5
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
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. | 13133 |
13 |
| Philips Intellectual Property & Standards GmbH | 2395 |
9 |
| Mitsubishi Chemical Corporation | 4313 |
7 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
6 |
| General Electric Company | 18133 |
5 |
| Murata Manufacturing Co., Ltd. | 22355 |
5 |
| Grirem Advanced Materials Co., Ltd. | 114 |
5 |
| Tohoku University | 2526 |
5 |
| OSRAM SYLVANIA Inc. | 742 |
4 |
| Denka Company Limited | 2189 |
4 |
| Shenzhen Ocean's King Lighting Engineering Co., Ltd. | 46 |
4 |
| Toshiba Materials Co., Ltd. | 600 |
4 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
4 |
| Honeywell International Inc. | 13799 |
3 |
| Panasonic Corporation | 20786 |
3 |
| Matsushita Electric Industrial Co., Ltd. | 4724 |
3 |
| Semiconductor Energy Laboratory Co., Ltd. | 10902 |
3 |
| Sumitomo Chemical Company, Limited | 8808 |
3 |
| Konica Minolta Medical & Graphic, Inc. | 986 |
3 |
| Other owners | 147 |