- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 11/67 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing refractory metals
Patent holdings for IPC class C09K 11/67
Total number of patents in this class: 239
10-year publication summary
|
23
|
15
|
15
|
14
|
19
|
16
|
24
|
13
|
15
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nichia Corporation | 3691 |
18 |
| Shin-Etsu Chemical Co., Ltd. | 5615 |
15 |
| Denka Company Limited | 2545 |
14 |
| Merck Patent GmbH | 5861 |
9 |
| National Institute of Advanced Industrial Science and Technology | 3792 |
9 |
| Turun Yliopisto | 186 |
9 |
| Idemitsu Kosan Co., Ltd. | 4198 |
8 |
| OSRAM Opto Semiconductors GmbH | 3314 |
6 |
| Intematix Corporation | 203 |
6 |
| Current Lighting Solutions, LLC f/k/a GE Lighting Solutions, LLC | 400 |
6 |
| Sumitomo Chemical Company, Limited | 9027 |
5 |
| Mitsubishi Chemical Corporation | 4488 |
5 |
| General Electric Company | 13838 |
4 |
| Boe Technology Group Co., Ltd. | 40728 |
4 |
| Beijing BOE Optoelectronics Technology Co., Ltd. | 3878 |
4 |
| Daiichi Kigenso Kagaku Kogyo Co., Ltd. | 170 |
4 |
| Kuraray Noritake Dental Inc. | 430 |
4 |
| National Institute for Materials Science | 1106 |
4 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
4 |
| Sharp Kabushiki Kaisha | 18788 |
4 |
| Other owners | 97 |