- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 11/59 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing silicon
Patent holdings for IPC class C09K 11/59
Total number of patents in this class: 578
10-year publication summary
|
31
|
26
|
25
|
25
|
19
|
26
|
27
|
12
|
10
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| National Institute for Materials Science | 1087 |
24 |
| Konica Minolta Medical & Graphic, Inc. | 589 |
22 |
| Toshiba Materials Co., Ltd. | 563 |
19 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6167 |
19 |
| Samsung Electronics Co., Ltd. | 158337 |
14 |
| Panasonic Intellectual Property Management Co., Ltd. | 34145 |
14 |
| Ocean's King Lighting Science & Technology Co., Ltd. | 273 |
13 |
| Sumitomo Chemical Company, Limited | 8963 |
12 |
| Nichia Corporation | 3880 |
12 |
| Panasonic Corporation | 18896 |
11 |
| Denka Company Limited | 2738 |
11 |
| Mitsubishi Chemical Corporation | 4724 |
10 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 577 |
10 |
| Ube Material Industries, Ltd. | 103 |
9 |
| Sharp Kabushiki Kaisha | 18520 |
8 |
| Merck Patent GmbH | 5735 |
7 |
| Niigata University | 227 |
7 |
| Dow Silicones Corporation | 2127 |
7 |
| General Electric Company | 13912 |
6 |
| Shin-Etsu Chemical Co., Ltd. | 6117 |
6 |
| Other owners | 337 |