- 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 33/12 - Etching in gas atmosphere or plasma
Patent holdings for IPC class C30B 33/12
Total number of patents in this class: 138
10-year publication summary
|
7
|
8
|
10
|
15
|
9
|
17
|
16
|
9
|
11
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kwansei Gakuin Educational Foundation | 198 |
20 |
| Toyota Tsusho Corporation | 163 |
14 |
| Sumitomo Electric Industries, Ltd. | 14131 |
10 |
| Toyo Tanso Co., Ltd. | 227 |
9 |
| Applied Materials, Inc. | 16587 |
6 |
| Ecole Polytechnique Federale de Lausanne (epfl) | 1434 |
5 |
| Denso Corporation | 23338 |
4 |
| ASM IP Holding B.V. | 1715 |
4 |
| Nichia Corporation | 3394 |
3 |
| Element Six Technologies Limited | 179 |
3 |
| Shin-Etsu Handotai Co., Ltd. | 1277 |
3 |
| Universitat Basel | 266 |
3 |
| Centre National de La Recherche Scientifique | 9632 |
2 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
2 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
2 |
| NGK Insulators, Ltd. | 4589 |
2 |
| Board of Trustees of Michigan State University | 1141 |
2 |
| Universitat des Saarlandes | 153 |
2 |
| Samsung Electronics Co., Ltd. | 131630 |
1 |
| International Business Machines Corporation | 60644 |
1 |
| Other owners | 40 |