- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications 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: 2575
10-year publication summary
|
257
|
240
|
226
|
195
|
236
|
184
|
182
|
182
|
151
|
50
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nichia Corporation | 3394 |
164 |
| OSRAM Opto Semiconductors GmbH | 3390 |
86 |
| Denka Company Limited | 2189 |
61 |
| Koninklijke Philips Electronics N.V. | 13133 |
60 |
| Philips Intellectual Property & Standards GmbH | 2395 |
54 |
| Lumileds LLC | 1827 |
53 |
| Merck Patent GmbH | 5909 |
51 |
| Seoul Semiconductor Co., Ltd. | 1073 |
50 |
| OSRAM OLED GmbH | 1841 |
48 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
47 |
| National Institute for Materials Science | 1108 |
44 |
| Intematix Corporation | 223 |
42 |
| OSRAM GmbH | 2442 |
39 |
| Samsung Electronics Co., Ltd. | 131630 |
35 |
| Koninklijke Philips N.V. | 22975 |
34 |
| Mitsubishi Chemical Corporation | 4313 |
32 |
| General Electric Company | 18133 |
31 |
| Ocean's King Lighting Science & Technology Co., Ltd. | 273 |
31 |
| Luxium Solutions, LLC | 90 |
26 |
| Grirem Advanced Materials Co., Ltd. | 114 |
23 |
| Other owners | 1564 |