- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications 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
|
5
|
5
|
8
|
8
|
3
|
8
|
7
|
7
|
8
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Chemical Corporation | 4608 |
7 |
| National Institute for Materials Science | 1092 |
7 |
| Tohoku University | 2848 |
7 |
| Tokuyama Corporation | 1435 |
7 |
| Sumitomo Chemical Company, Limited | 9105 |
6 |
| General Electric Company | 13827 |
5 |
| Grirem Advanced Materials Co., Ltd. | 136 |
4 |
| Schlumberger Canada Limited | 7446 |
3 |
| Schlumberger Technology B.v. | 5224 |
3 |
| Schlumberger Holdings Limited | 2780 |
3 |
| Prad Research and Development Limited | 2687 |
3 |
| Saint-Gobain Ceramics & Plastics, Inc. | 822 |
3 |
| Services Petroliers Schlumberger | 5888 |
3 |
| Centre National de La Recherche Scientifique | 10716 |
2 |
| Koninklijke Philips Electronics N.V. | 8689 |
2 |
| Siemens Medical Solutions USA, Inc. | 1495 |
2 |
| Nichia Corporation | 3774 |
2 |
| Fujian Institute of Research on The Structure of Matter, Chinese Academy of Sciences | 103 |
2 |
| Hong Kong Baptist University | 66 |
2 |
| National University of Singapore | 2515 |
2 |
| Other owners | 77 |