- 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 33/10 - Etching in solutions or melts
Patent holdings for IPC class C30B 33/10
Total number of patents in this class: 164
10-year publication summary
|
14
|
11
|
19
|
16
|
12
|
12
|
18
|
15
|
27
|
4
|
| 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 |
16 |
| Shin-Etsu Handotai Co., Ltd. | 1277 |
5 |
| Tokuyama Corporation | 1248 |
5 |
| Changzhou Shichuang Energy Co.,Ltd. | 50 |
5 |
| QROMIS, Inc. | 87 |
4 |
| Changzhou S.C Exact Equipment Co., Ltd. | 15 |
4 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
3 |
| Nichia Corporation | 3394 |
3 |
| Seoul Semiconductor Co., Ltd. | 1073 |
3 |
| Senic Inc. | 40 |
3 |
| JX Metals Corporation | 111 |
3 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
2 |
| Cree, Inc. | 1157 |
2 |
| Mitsubishi Chemical Corporation | 4313 |
2 |
| National Institute of Advanced Industrial Science and Technology | 3677 |
2 |
| The 13th Research Institute of China Electronics Technology Group Corporation | 118 |
2 |
| AXT, Inc. | 22 |
2 |
| JX Nippon Mining & Metals Corporation | 1576 |
2 |
| Nanjing Tech University | 218 |
2 |
| National Cheng Kung University | 505 |
2 |
| Other owners | 92 |