- All sections
- C - Chemistry; metallurgy
- C30B - Single-crystal growth; unidirectional solidification of eutectic material or unidirectional demixing of eutectoid material; refining by zone-melting of material; production of a homogeneous polycrystalline material with defined structure; single crystals or homogeneous polycrystalline material with defined structure; after-treatment of single crystals or a homogeneous polycrystalline material with defined structure; apparatus 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: 636
10-year publication summary
48
|
40
|
76
|
61
|
39
|
64
|
47
|
51
|
51
|
14
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Sumitomo Electric Industries, Ltd. | 14131 |
85 |
Mitsubishi Chemical Corporation | 4313 |
41 |
Element Six Technologies Limited | 179 |
33 |
Sumco Corporation | 1116 |
28 |
Resonac Corporation | 2233 |
26 |
Sumitomo Chemical Company, Limited | 8808 |
19 |
Tokuyama Corporation | 1248 |
16 |
National Institute of Advanced Industrial Science and Technology | 3677 |
15 |
Mitsubishi Electric Corporation | 43934 |
14 |
Fuji Electric Co., Ltd. | 4750 |
14 |
Showa Denko K.K. | 2539 |
13 |
NGK Insulators, Ltd. | 4589 |
12 |
Siltronic AG | 395 |
12 |
Shin-Etsu Chemical Co., Ltd. | 5132 |
11 |
Kwansei Gakuin Educational Foundation | 198 |
11 |
Sumitomo Electric Hardmetal Corp. | 969 |
10 |
Denso Corporation | 23338 |
10 |
National University Corporation Tokyo University of Agriculture and Technology | 341 |
10 |
Shin-Etsu Handotai Co., Ltd. | 1277 |
10 |
Tamura Corporation | 350 |
10 |
Other owners | 236 |