- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds 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: 212
10-year publication summary
|
19
|
5
|
17
|
17
|
29
|
19
|
24
|
14
|
15
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tokuyama Corporation | 1248 |
42 |
| FUJIFILM Corporation | 27102 |
12 |
| NGK Insulators, Ltd. | 4589 |
10 |
| Crystal IS, Inc. | 122 |
6 |
| Showa Denko K.K. | 2539 |
5 |
| Denka Company Limited | 2189 |
5 |
| Toyo Aluminium Kabushiki Kaisha | 357 |
5 |
| Tama-TLO Ltd | 24 |
4 |
| Industry-academic Cooperation Foundation, Yeungnam University | 71 |
3 |
| National University Corporation Nagoya University | 921 |
3 |
| Odysseus Technologies, Inc. | 4 |
3 |
| 3m Innovative Properties Company | 18406 |
2 |
| Siemens AG | 24990 |
2 |
| LG Chem, Ltd. | 17205 |
2 |
| The Regents of the University of California | 18943 |
2 |
| Hitachi Chemical Company, Ltd. | 2455 |
2 |
| Denso Corporation | 23338 |
2 |
| Nichia Corporation | 3394 |
2 |
| The Government of the United States of America, as represented by the Secretary of the Navy | 1102 |
2 |
| Maruwa Co., Ltd. | 23 |
2 |
| Other owners | 96 |