- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications 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: 63
10-year publication summary
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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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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rhodia Operations | 1586 |
7 |
| Koninklijke Philips Electronics N.V. | 9658 |
5 |
| Konica Minolta Medical & Graphic, Inc. | 783 |
5 |
| General Electric Company | 13780 |
4 |
| Hamamatsu Photonics K.K. | 4417 |
3 |
| Ledvance LLC | 319 |
3 |
| Philips Intellectual Property & Standards GmbH | 1934 |
3 |
| Nitto Denko Corporation | 8231 |
2 |
| OSRAM SYLVANIA Inc. | 683 |
2 |
| Ocean's King Lighting Science & Technology Co., Ltd. | 273 |
2 |
| Ushio Denki Kabushiki Kaisha | 1178 |
2 |
| Merck Patent GmbH | 5831 |
1 |
| Panasonic Corporation | 20110 |
1 |
| Hitachi, Ltd. | 15484 |
1 |
| Industrial Technology Research Institute | 5086 |
1 |
| Panasonic Intellectual Property Management Co., Ltd. | 31375 |
1 |
| Idemitsu Kosan Co., Ltd. | 4219 |
1 |
| Henkel AG & Co. KGaA | 10572 |
1 |
| OSRAM GmbH | 2383 |
1 |
| Osram AG | 301 |
1 |
| Other owners | 16 |