- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 21/072 - Binary compounds of nitrogen with metals, with silicon, or with boron with aluminium
Patent holdings for IPC class C01B 21/072
Total number of patents in this class: 234
10-year publication summary
|
17
|
17
|
29
|
19
|
24
|
14
|
16
|
11
|
16
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tokuyama Corporation | 1471 |
48 |
| FUJIFILM Corporation | 30458 |
12 |
| NGK Insulators, Ltd. | 5234 |
10 |
| Crystal IS, Inc. | 122 |
9 |
| Denka Company Limited | 2709 |
7 |
| Showa Denko K.K. | 2079 |
5 |
| Toyo Aluminium Kabushiki Kaisha | 348 |
5 |
| Odysseus Technologies, Inc. | 5 |
4 |
| Resonac Corporation | 3476 |
4 |
| Denso Corporation | 25471 |
3 |
| Industry-academic Cooperation Foundation, Yeungnam University | 65 |
3 |
| Maruwa Co., Ltd. | 27 |
3 |
| National Chung Shan Institute of Science and Technology | 347 |
3 |
| National University Corporation Nagoya University | 791 |
3 |
| 3m Innovative Properties Company | 17497 |
2 |
| Siemens AG | 24064 |
2 |
| LG Chem, Ltd. | 17929 |
2 |
| The Regents of the University of California | 20690 |
2 |
| Hitachi Chemical Company, Ltd. | 2251 |
2 |
| Nichia Corporation | 3869 |
2 |
| Other owners | 103 |