- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 11/68 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing refractory metals containing chromium, molybdenum or tungsten
Patent holdings for IPC class C09K 11/68
Total number of patents in this class: 134
10-year publication summary
|
5
|
5
|
6
|
11
|
16
|
12
|
10
|
10
|
13
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nichia Corporation | 3640 |
9 |
| Purdue Research Foundation | 3557 |
6 |
| PPG Industries Ohio, Inc. | 3453 |
5 |
| Lumileds LLC | 1899 |
5 |
| The Regents of the University of California | 19784 |
4 |
| Merck Patent GmbH | 5831 |
4 |
| Mitsubishi Chemical Corporation | 4473 |
4 |
| Grirem Advanced Materials Co., Ltd. | 130 |
4 |
| Litec-vermögensverwaltungsgesellschaft mbH | 10 |
4 |
| Panasonic Intellectual Property Management Co., Ltd. | 30822 |
3 |
| OSRAM Opto Semiconductors GmbH | 3322 |
3 |
| Ocean's King Lighting Science & Technology Co., Ltd. | 273 |
3 |
| Seoul Semiconductor Co., Ltd. | 1073 |
3 |
| SICPA Holding SA | 897 |
3 |
| UT-Battelle, LLC | 1444 |
3 |
| Nanoco 2D Materials Limited | 16 |
3 |
| Panasonic Corporation | 20188 |
2 |
| Agency for Defense Development | 429 |
2 |
| Tailorlux GmbH | 11 |
2 |
| Toshiba Materials Co., Ltd. | 656 |
2 |
| Other owners | 60 |