- 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: 57
10-year publication summary
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2
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3
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0
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2
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0
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1
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1
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2
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0
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rhodia Operations | 1539 |
7 |
| Konica Minolta Medical & Graphic, Inc. | 682 |
5 |
| General Electric Company | 13776 |
4 |
| Koninklijke Philips Electronics N.V. | 8370 |
3 |
| Hamamatsu Photonics K.K. | 4565 |
3 |
| Nitto Denko Corporation | 8410 |
2 |
| OSRAM SYLVANIA Inc. | 667 |
2 |
| Ledvance LLC | 313 |
2 |
| Ocean's King Lighting Science & Technology Co., Ltd. | 273 |
2 |
| Ushio Denki Kabushiki Kaisha | 1209 |
2 |
| Merck Patent GmbH | 5724 |
1 |
| Panasonic Corporation | 19874 |
1 |
| Hitachi, Ltd. | 15800 |
1 |
| Industrial Technology Research Institute | 5069 |
1 |
| Panasonic Intellectual Property Management Co., Ltd. | 32983 |
1 |
| Idemitsu Kosan Co., Ltd. | 4231 |
1 |
| Henkel AG & Co. KGaA | 10691 |
1 |
| OSRAM GmbH | 2339 |
1 |
| Osram AG | 292 |
1 |
| National Institute of Advanced Industrial Science and Technology | 3795 |
1 |
| Other owners | 15 |