- 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 15/20 - Controlling or regulating
Patent holdings for IPC class C30B 15/20
Total number of patents in this class: 559
10-year publication summary
|
18
|
38
|
39
|
44
|
34
|
47
|
46
|
69
|
65
|
25
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumco Corporation | 1116 |
93 |
| Globalwafers Co., Ltd. | 561 |
76 |
| Shin-Etsu Handotai Co., Ltd. | 1277 |
49 |
| Siltronic AG | 395 |
38 |
| SK Siltron Co., Ltd. | 146 |
28 |
| LG Siltron Inc. | 116 |
18 |
| Sumco TECHXIV Corporation | 109 |
15 |
| Xi'an Eswin Material Technology Co., Ltd. | 45 |
14 |
| Hanwha Solutions Corporation | 572 |
12 |
| LONGi Green Energy Technology Co., Ltd. | 180 |
10 |
| Hanwha Corporation | 258 |
9 |
| Zing Semiconductor Corporation | 50 |
9 |
| TCL Zhonghuan Renewable Energy Technology Co., Ltd. | 57 |
8 |
| Globalwafers Japan Co., Ltd. | 62 |
6 |
| Meishan Boya Advanced Materials Co., Ltd. | 58 |
6 |
| Sumitomo Mitsubishi Silicon Corporation | 22 |
5 |
| Corner Star Limited | 95 |
5 |
| Woongjin Energy Co., Ltd. | 19 |
5 |
| Hangzhou Fujia Gallium Technology Co. Ltd. | 20 |
5 |
| Infineon Technologies AG | 8189 |
4 |
| Other owners | 144 |