- All sections
- C - Chemistrymetallurgy
- C30B - Single-crystal growthunidirectional solidification of eutectic material or unidirectional demixing of eutectoid materialrefining by zone-melting of materialproduction of a homogeneous polycrystalline material with defined structuresingle crystals or homogeneous polycrystalline material with defined structureafter-treatment of single crystals or a homogeneous polycrystalline material with defined structureapparatus therefor
- C30B 15/32 - Seed holders, e.g. chucks
Patent holdings for IPC class C30B 15/32
Total number of patents in this class: 63
10-year publication summary
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3
|
8
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5
|
3
|
2
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4
|
3
|
6
|
5
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Globalwafers Co., Ltd. | 726 |
8 |
| Sumco Corporation | 1114 |
7 |
| Siemens Medical Solutions USA, Inc. | 1465 |
5 |
| LG Siltron Inc. | 116 |
4 |
| Corner Star Limited | 95 |
4 |
| Meishan Boya Advanced Materials Co., Ltd. | 93 |
4 |
| Siltronic AG | 431 |
3 |
| SK Siltron Co., Ltd. | 169 |
3 |
| Pva Tepla AG | 17 |
2 |
| Shin-Etsu Handotai Co., Ltd. | 1305 |
2 |
| DAEVAC International Co., Ltd. | 3 |
2 |
| Linton Crystal Technologies Corporation | 7 |
2 |
| Lau Superconductors Inc. | 13 |
2 |
| Toyota Motor Corporation | 34999 |
1 |
| Commissariat à l'énergie atomique et aux energies alternatives | 11021 |
1 |
| Alliance for Sustainable Energy, LLC | 305 |
1 |
| Crystal Systems Corporation | 19 |
1 |
| Siltron Inc. | 32 |
1 |
| SKC Co., Ltd. | 325 |
1 |
| Hemlock Semiconductor Operations LLC | 19 |
1 |
| Other owners | 8 |