- 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: 620
10-year publication summary
|
28
|
31
|
26
|
25
|
25
|
19
|
26
|
27
|
14
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Konica Minolta Medical & Graphic, Inc. | 786 |
32 |
| National Institute for Materials Science | 1105 |
26 |
| Toshiba Materials Co., Ltd. | 663 |
19 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6267 |
19 |
| Sumitomo Chemical Company, Limited | 9046 |
17 |
| Mitsubishi Chemical Corporation | 4496 |
15 |
| Samsung Electronics Co., Ltd. | 145630 |
14 |
| Panasonic Intellectual Property Management Co., Ltd. | 31273 |
14 |
| Nichia Corporation | 3696 |
14 |
| Panasonic Corporation | 20128 |
13 |
| Ocean's King Lighting Science & Technology Co., Ltd. | 273 |
13 |
| Denka Company Limited | 2565 |
11 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 628 |
10 |
| Intematix Corporation | 202 |
9 |
| Ube Material Industries, Ltd. | 100 |
9 |
| Immunolight, LLC | 208 |
8 |
| Niigata University | 232 |
8 |
| Sharp Kabushiki Kaisha | 18771 |
8 |
| Merck Patent GmbH | 5828 |
7 |
| Seoul Semiconductor Co., Ltd. | 1080 |
7 |
| Other owners | 347 |