- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications of materials not otherwise provided for
- C09K 11/81 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals containing phosphorus
Patent holdings for IPC class C09K 11/81
Total number of patents in this class: 72
10-year publication summary
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1
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1
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2
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3
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0
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2
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1
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1
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1
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0
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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Koninklijke Philips Electronics N.V. | 13133 |
8 |
| Rhodia Operations | 1645 |
7 |
| Konica Minolta Medical & Graphic, Inc. | 986 |
5 |
| Philips Intellectual Property & Standards GmbH | 2395 |
5 |
| General Electric Company | 18133 |
4 |
| Hamamatsu Photonics K.K. | 4161 |
3 |
| Ledvance LLC | 336 |
3 |
| Nitto Denko Corporation | 7879 |
2 |
| OSRAM SYLVANIA Inc. | 742 |
2 |
| Bayer Technology Services GmbH | 199 |
2 |
| Ocean's King Lighting Science & Technology Co., Ltd. | 273 |
2 |
| Ushio Denki Kabushiki Kaisha | 1088 |
2 |
| Merck Patent GmbH | 5909 |
1 |
| Panasonic Corporation | 20786 |
1 |
| Matsushita Electric Industrial Co., Ltd. | 4724 |
1 |
| Hitachi, Ltd. | 16452 |
1 |
| Industrial Technology Research Institute | 4898 |
1 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
1 |
| Idemitsu Kosan Co., Ltd. | 3995 |
1 |
| Henkel AG & Co. KGaA | 10129 |
1 |
| Other owners | 19 |