- 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 15/22 - Stabilisation or shape controlling of the molten zone near the pulled crystal; Controlling the section of the crystal
Patent holdings for IPC class C30B 15/22
Total number of patents in this class: 140
10-year publication summary
7
|
8
|
10
|
10
|
15
|
13
|
9
|
14
|
13
|
9
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Sumco Corporation | 1116 |
24 |
Shin-Etsu Handotai Co., Ltd. | 1277 |
15 |
Siltronic AG | 395 |
14 |
Globalwafers Co., Ltd. | 561 |
11 |
SK Siltron Co., Ltd. | 146 |
9 |
Leading Edge Equipment Technologies, Inc. | 23 |
6 |
LG Siltron Inc. | 116 |
4 |
Zing Semiconductor Corporation | 50 |
4 |
LONGi Green Energy Technology Co., Ltd. | 180 |
4 |
JX Nippon Mining & Metals Corporation | 1576 |
3 |
Zhonghuan Advanced Semiconductor Materials Co., Ltd. | 7 |
3 |
Jinko Solar Co., Ltd. | 135 |
2 |
Sumco Phoenix Corporation | 7 |
2 |
Sumco TECHXIV Corporation | 109 |
2 |
Tokuyama Corporation | 1248 |
2 |
Resonest Corporation | 4 |
2 |
Fujian Jing' an Optoelectronics Co., Ltd | 26 |
2 |
Meishan Boya Advanced Materials Co., Ltd. | 58 |
2 |
Toyota Motor Corporation | 28582 |
1 |
Varian Semiconductor Equipment Associates, Inc. | 1282 |
1 |
Other owners | 27 |