- 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: 148
10-year publication summary
|
7
|
6
|
10
|
9
|
17
|
18
|
20
|
15
|
22
|
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 |
33 |
| The United States of America as represented by the Secretary of the Air Force | 754 |
11 |
| Dowa Electronics Materials Co., Ltd. | 610 |
10 |
| Freiberger Compound Materials GmbH | 61 |
8 |
| Utica Leaseco, LLC Assignee | 112 |
8 |
| AXT, Inc. | 22 |
5 |
| Alliance for Sustainable Energy, LLC | 698 |
4 |
| Shanxi China Crystal Technologies Co., Ltd. | 4 |
4 |
| Azur Space Solar Power GmbH | 166 |
3 |
| Beijing Tongmei Xtal Technology Co., Ltd. | 21 |
3 |
| JX Nippon Mining & Metals Corporation | 1576 |
3 |
| Soitec | 892 |
3 |
| Hanergy New Material Technology Co., Ltd. | 15 |
3 |
| Alignedbio AB | 10 |
3 |
| The Regents of the University of California | 18943 |
2 |
| Corning Incorporated | 9932 |
2 |
| Wisconsin Alumni Research Foundation | 3774 |
2 |
| Microsoft Technology Licensing, LLC | 51439 |
2 |
| Industry-Academic Cooperation Foundation, Yonsei University | 2329 |
2 |
| Mitsubishi Materials Techno Corporation | 8 |
2 |
| Other owners | 35 |