- 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: 810
10-year publication summary
|
76
|
61
|
39
|
64
|
47
|
53
|
53
|
56
|
62
|
48
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Electric Industries, Ltd. | 16404 |
68 |
| Mitsubishi Chemical Corporation | 4757 |
49 |
| Element Six Technologies Limited | 207 |
43 |
| Resonac Corporation | 3739 |
38 |
| Sumco Corporation | 1108 |
33 |
| Sumitomo Chemical Company, Limited | 8989 |
27 |
| Mitsumi Electric Co., Ltd. | 1299 |
26 |
| Denso Corporation | 25799 |
17 |
| Shin-Etsu Handotai Co., Ltd. | 1305 |
17 |
| National Institute of Advanced Industrial Science and Technology | 3793 |
16 |
| Tokuyama Corporation | 1502 |
16 |
| NGK Insulators, Ltd. | 5170 |
15 |
| Siltronic AG | 439 |
15 |
| Mitsubishi Electric Corporation | 48409 |
14 |
| Shin-Etsu Chemical Co., Ltd. | 6148 |
14 |
| Fuji Electric Co., Ltd. | 5541 |
14 |
| Showa Denko K.K. | 2054 |
13 |
| Globalwafers Co., Ltd. | 735 |
12 |
| Kwansei Gakuin Educational Foundation | 226 |
12 |
| Tamura Corporation | 365 |
11 |
| Other owners | 340 |