- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications of materials not otherwise provided for
- C09K 11/80 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals containing aluminium or gallium
Patent holdings for IPC class C09K 11/80
Total number of patents in this class: 533
10-year publication summary
|
33
|
17
|
25
|
30
|
34
|
26
|
17
|
20
|
10
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| National Institute for Materials Science | 1108 |
32 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
31 |
| Koninklijke Philips Electronics N.V. | 13133 |
22 |
| Ube Industries, Ltd. | 921 |
15 |
| Philips Intellectual Property & Standards GmbH | 2395 |
15 |
| Mitsubishi Chemical Corporation | 4313 |
14 |
| Nichia Corporation | 3394 |
14 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
13 |
| Toshiba Materials Co., Ltd. | 600 |
12 |
| Panasonic Corporation | 20786 |
10 |
| NGK Spark Plug Co., Ltd. | 935 |
10 |
| Denka Company Limited | 2189 |
10 |
| Grirem Advanced Materials Co., Ltd. | 114 |
10 |
| Ocean's King Lighting Science & Technology Co., Ltd. | 273 |
10 |
| Sharp Kabushiki Kaisha | 18957 |
9 |
| OSRAM Opto Semiconductors GmbH | 3390 |
8 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 680 |
8 |
| Nippon Electric Glass Co., Ltd. | 2299 |
8 |
| OSRAM GmbH | 2442 |
7 |
| Samsung Electronics Co., Ltd. | 131630 |
6 |
| Other owners | 269 |