- 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 29/42 - Gallium arsenide
Patent holdings for IPC class C30B 29/42
Total number of patents in this class: 164
10-year publication summary
|
6
|
10
|
9
|
17
|
18
|
20
|
15
|
24
|
21
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Electric Industries, Ltd. | 14972 |
40 |
| The United States of America as represented by the Secretary of the Air Force | 806 |
12 |
| Dowa Electronics Materials Co., Ltd. | 621 |
11 |
| Freiberger Compound Materials GmbH | 61 |
9 |
| Utica Leaseco, LLC Assignee | 103 |
8 |
| AXT, Inc. | 24 |
6 |
| Alliance for Sustainable Energy, LLC | 756 |
5 |
| BAE Systems Information and Electronic Systems Integration Inc. | 1807 |
5 |
| Shanxi China Crystal Technologies Co., Ltd. | 4 |
4 |
| Azur Space Solar Power GmbH | 163 |
3 |
| Beijing Tongmei Xtal Technology Co., Ltd. | 22 |
3 |
| JX Nippon Mining & Metals Corporation | 1524 |
3 |
| Soitec | 954 |
3 |
| Hanergy New Material Technology Co., Ltd. | 15 |
3 |
| Alignedbio AB | 11 |
3 |
| The Regents of the University of California | 19517 |
2 |
| Corning Incorporated | 10125 |
2 |
| Wisconsin Alumni Research Foundation | 3820 |
2 |
| Microsoft Technology Licensing, LLC | 52886 |
2 |
| Industry-Academic Cooperation Foundation, Yonsei University | 2383 |
2 |
| Other owners | 36 |