- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications of materials not otherwise provided for
- C09K 11/84 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals containing sulfur, e.g. oxysulfides
Patent holdings for IPC class C09K 11/84
Total number of patents in this class: 109
10-year publication summary
|
4
|
2
|
6
|
3
|
0
|
4
|
5
|
2
|
1
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toshiba Materials Co., Ltd. | 600 |
24 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
24 |
| Koninklijke Philips Electronics N.V. | 13133 |
5 |
| Semiconductor Energy Laboratory Co., Ltd. | 10902 |
3 |
| Mitsubishi Chemical Corporation | 4313 |
3 |
| Philips Intellectual Property & Standards GmbH | 2395 |
3 |
| Hitachi Metals, Ltd. | 2175 |
2 |
| Mitsui Mining & Smelting Co., Ltd. | 1373 |
2 |
| Nemoto & Co., Ltd. | 27 |
2 |
| Ocean's King Lighting Science & Technology Co., Ltd. | 273 |
2 |
| Seoul Semiconductor Co., Ltd. | 1073 |
2 |
| Solvay SA | 1181 |
2 |
| Current Lighting Solutions, LLC f/k/a GE Lighting Solutions, LLC | 417 |
2 |
| Siemens AG | 24990 |
1 |
| Honeywell International Inc. | 13799 |
1 |
| Toshiba Corporation | 12017 |
1 |
| Bayer Intellectual Property GmbH | 2671 |
1 |
| Konica Minolta Medical & Graphic, Inc. | 986 |
1 |
| Toray Industries, Inc. | 6652 |
1 |
| Commonwealth Scientific and Industrial Research Organisation | 1652 |
1 |
| Other owners | 26 |