- All sections
- H - Electricity
- H01L - Semiconductor devices not covered by class
- H01L 21/318 - Inorganic layers composed of nitrides
Patent holdings for IPC class H01L 21/318
Total number of patents in this class: 633
10-year publication summary
|
37
|
21
|
20
|
38
|
32
|
33
|
38
|
36
|
31
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tokyo Electron Limited | 12158 |
133 |
| Kokusai Electric Corporation | 1914 |
103 |
| Applied Materials, Inc. | 17808 |
37 |
| Hitachi Kokusai Electric Inc. | 1039 |
31 |
| Semiconductor Energy Laboratory Co., Ltd. | 11109 |
25 |
| Sharp Kabushiki Kaisha | 18867 |
16 |
| Mitsubishi Heavy Industries, Ltd. | 8550 |
11 |
| Mitsubishi Electric Corporation | 44962 |
8 |
| Panasonic Corporation | 20307 |
7 |
| FUJIFILM Corporation | 28841 |
7 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 40717 |
7 |
| ULVAC, Inc. | 1402 |
7 |
| Fujitsu Limited | 18417 |
6 |
| Micron Technology, Inc. | 25874 |
6 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3606 |
6 |
| Tohoku University | 2689 |
6 |
| Shimadzu Corporation | 6036 |
5 |
| National Institute of Advanced Industrial Science and Technology | 3736 |
5 |
| Canon Anelva Corporation | 682 |
5 |
| Nissin Electric Co., Ltd. | 235 |
5 |
| Other owners | 197 |