- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 11/77 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals
Patent holdings for IPC class C09K 11/77
Total number of patents in this class: 2617
10-year publication summary
|
240
|
226
|
195
|
236
|
184
|
185
|
190
|
154
|
136
|
53
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nichia Corporation | 3696 |
181 |
| OSRAM Opto Semiconductors GmbH | 3313 |
87 |
| Denka Company Limited | 2565 |
58 |
| Lumileds LLC | 1919 |
53 |
| Koninklijke Philips Electronics N.V. | 9737 |
49 |
| Panasonic Intellectual Property Management Co., Ltd. | 31273 |
48 |
| National Institute for Materials Science | 1105 |
48 |
| OSRAM OLED GmbH | 1779 |
48 |
| Merck Patent GmbH | 5828 |
47 |
| Seoul Semiconductor Co., Ltd. | 1080 |
46 |
| Philips Intellectual Property & Standards GmbH | 1940 |
43 |
| OSRAM GmbH | 2384 |
39 |
| Intematix Corporation | 202 |
37 |
| Samsung Electronics Co., Ltd. | 145630 |
36 |
| Koninklijke Philips N.V. | 24740 |
34 |
| Mitsubishi Chemical Corporation | 4496 |
33 |
| Ocean's King Lighting Science & Technology Co., Ltd. | 273 |
31 |
| Signify Holding B.V. | 7521 |
26 |
| General Electric Company | 13762 |
24 |
| Grirem Advanced Materials Co., Ltd. | 133 |
23 |
| Other owners | 1626 |