- 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 15/12 - Double crucible methods
Patent holdings for IPC class C30B 15/12
Total number of patents in this class: 87
10-year publication summary
9
|
10
|
7
|
11
|
5
|
1
|
4
|
16
|
11
|
1
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Corner Star Limited | 95 |
21 |
Globalwafers Co., Ltd. | 561 |
12 |
Hanwha Solutions Corporation | 572 |
10 |
Hanwha Corporation | 258 |
9 |
SunEdison, Inc. | 35 |
7 |
Shin-Etsu Quartz Products Co., Ltd. | 160 |
5 |
GTAT IP Holding LLC | 7 |
4 |
Solaicx, Inc. | 2 |
2 |
Siemens Medical Solutions USA, Inc. | 1584 |
1 |
1366 Technologies, Inc. | 17 |
1 |
The 13th Research Institute of China Electronics Technology Group Corporation | 118 |
1 |
Fukuda Crystal Laboratory | 11 |
1 |
GTAT Corporation | 114 |
1 |
Jinko Solar Co., Ltd. | 135 |
1 |
Nippon Mining & Metals Co., Ltd. | 161 |
1 |
Shin-Etsu Handotai Co., Ltd. | 1277 |
1 |
Siltronic AG | 395 |
1 |
Sumco Corporation | 1116 |
1 |
Tokuyama Corporation | 1248 |
1 |
LONGi Green Energy Technology Co., Ltd. | 180 |
1 |
Other owners | 5 |