- 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 29/38 - Nitrides
Patent holdings for IPC class C30B 29/38
Total number of patents in this class: 1018
10-year publication summary
|
53
|
54
|
49
|
48
|
61
|
63
|
61
|
44
|
69
|
17
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NGK Insulators, Ltd. | 4589 |
145 |
| Sumitomo Electric Industries, Ltd. | 14131 |
78 |
| Mitsubishi Chemical Corporation | 4313 |
69 |
| Sumitomo Chemical Company, Limited | 8808 |
53 |
| Tokuyama Corporation | 1248 |
37 |
| Shin-Etsu Handotai Co., Ltd. | 1277 |
34 |
| Osaka University | 3143 |
33 |
| Sciocs Company Limited | 43 |
22 |
| Tohoku University | 2526 |
18 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
17 |
| Kyocera Corporation | 12735 |
15 |
| Toyoda Gosei Co., Ltd. | 1746 |
14 |
| Mitsubishi Materials Corporation | 2378 |
12 |
| National University Corporation Tokyo University of Agriculture and Technology | 341 |
12 |
| Panasonic Corporation | 20786 |
11 |
| National Institute for Materials Science | 1108 |
11 |
| Ricoh Company, Ltd. | 13266 |
9 |
| National Institute of Advanced Industrial Science and Technology | 3677 |
9 |
| Kwansei Gakuin Educational Foundation | 198 |
9 |
| National University Corporation Nagoya University | 921 |
9 |
| Other owners | 401 |