- 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 25/20 - Epitaxial-layer growth characterised by the substrate the substrate being of the same materials as the epitaxial layer
Patent holdings for IPC class C30B 25/20
Total number of patents in this class: 773
10-year publication summary
|
75
|
61
|
38
|
63
|
47
|
53
|
53
|
53
|
62
|
13
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Electric Industries, Ltd. | 15967 |
95 |
| Mitsubishi Chemical Corporation | 4666 |
48 |
| Element Six Technologies Limited | 203 |
42 |
| Resonac Corporation | 3103 |
34 |
| Sumco Corporation | 1112 |
31 |
| Sumitomo Chemical Company, Limited | 9053 |
22 |
| National Institute of Advanced Industrial Science and Technology | 3795 |
17 |
| Tokuyama Corporation | 1446 |
16 |
| NGK Insulators, Ltd. | 5205 |
15 |
| Shin-Etsu Handotai Co., Ltd. | 1290 |
15 |
| Siltronic AG | 427 |
15 |
| Mitsubishi Electric Corporation | 47352 |
14 |
| Shin-Etsu Chemical Co., Ltd. | 5861 |
14 |
| Fuji Electric Co., Ltd. | 5318 |
14 |
| Denso Corporation | 24983 |
13 |
| Showa Denko K.K. | 2130 |
13 |
| Globalwafers Co., Ltd. | 714 |
12 |
| Kwansei Gakuin Educational Foundation | 218 |
12 |
| Tamura Corporation | 354 |
11 |
| Sumitomo Electric Hardmetal Corp. | 1060 |
10 |
| Other owners | 310 |