- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications of materials not otherwise provided for
- C09K 11/85 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals containing halogen
Patent holdings for IPC class C09K 11/85
Total number of patents in this class: 152
10-year publication summary
|
9
|
6
|
8
|
8
|
4
|
8
|
7
|
7
|
8
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tohoku University | 2677 |
7 |
| Tokuyama Corporation | 1339 |
7 |
| Sumitomo Chemical Company, Limited | 8966 |
6 |
| Mitsubishi Chemical Corporation | 4430 |
6 |
| National Institute for Materials Science | 1106 |
6 |
| General Electric Company | 17801 |
5 |
| Grirem Advanced Materials Co., Ltd. | 127 |
4 |
| Schlumberger Canada Limited | 7137 |
3 |
| Schlumberger Technology B.v. | 5058 |
3 |
| Schlumberger Holdings Limited | 2870 |
3 |
| Koninklijke Philips Electronics N.V. | 10968 |
3 |
| Prad Research and Development Limited | 2696 |
3 |
| Saint-Gobain Ceramics & Plastics, Inc. | 837 |
3 |
| Services Petroliers Schlumberger | 5616 |
3 |
| Centre National de La Recherche Scientifique | 10052 |
2 |
| Siemens Medical Solutions USA, Inc. | 1542 |
2 |
| Nichia Corporation | 3536 |
2 |
| Fujian Institute of Research on The Structure of Matter, Chinese Academy of Sciences | 103 |
2 |
| Hong Kong Baptist University | 58 |
2 |
| National University of Singapore | 2359 |
2 |
| Other owners | 78 |