- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 11/64 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing aluminium
Patent holdings for IPC class C09K 11/64
Total number of patents in this class: 985
10-year publication summary
|
48
|
43
|
56
|
68
|
63
|
48
|
59
|
47
|
43
|
15
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Denka Company Limited | 2590 |
106 |
| National Institute for Materials Science | 1104 |
66 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 627 |
58 |
| Nichia Corporation | 3713 |
50 |
| Mitsubishi Chemical Corporation | 4525 |
32 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6273 |
25 |
| Toshiba Materials Co., Ltd. | 666 |
22 |
| Sharp Kabushiki Kaisha | 18757 |
22 |
| Sumitomo Chemical Company, Limited | 9043 |
20 |
| Nippon Electric Glass Co., Ltd. | 2463 |
20 |
| OSRAM Opto Semiconductors GmbH | 3311 |
16 |
| Samsung Electronics Co., Ltd. | 146811 |
15 |
| National Institute of Advanced Industrial Science and Technology | 3789 |
15 |
| Seoul Semiconductor Co., Ltd. | 1081 |
15 |
| Ube Industries, Ltd. | 845 |
15 |
| General Electric Company | 13810 |
13 |
| Tohoku University | 2792 |
13 |
| Panasonic Corporation | 20088 |
12 |
| OSRAM GmbH | 2382 |
12 |
| Current Lighting Solutions, LLC f/k/a GE Lighting Solutions, LLC | 395 |
12 |
| Other owners | 426 |