- All sections
- H - Electricity
- H01L - Semiconductor devices not covered by class
- H01L 31/04 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof adapted as photovoltaic [PV] conversion devices
Patent holdings for IPC class H01L 31/04
Total number of patents in this class: 3184
10-year publication summary
|
74
|
63
|
48
|
41
|
33
|
31
|
32
|
28
|
23
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sharp Kabushiki Kaisha | 18484 |
226 |
| Sanyo Electric Co., Ltd. | 3379 |
198 |
| FUJIFILM Corporation | 30774 |
117 |
| Mitsubishi Electric Corporation | 48409 |
105 |
| Kyocera Corporation | 14479 |
94 |
| Hitachi Chemical Company, Ltd. | 2225 |
78 |
| ULVAC, Inc. | 1339 |
67 |
| Fujikura Ltd. | 3128 |
45 |
| Asahi Glass Company, Limited | 2592 |
42 |
| SunPower Corporation | 359 |
42 |
| Kaneka Corporation | 4822 |
40 |
| Sony Corporation | 30029 |
37 |
| Panasonic Corporation | 18658 |
36 |
| Mitsubishi Heavy Industries, Ltd. | 9231 |
30 |
| Hitachi, Ltd. | 16221 |
28 |
| Tokyo Electron Limited | 13956 |
28 |
| LG Chem, Ltd. | 17978 |
23 |
| Showa Shell Sekiyu K.K. | 80 |
23 |
| National Institute of Advanced Industrial Science and Technology | 3793 |
21 |
| Hitachi Zosen Corporation | 586 |
17 |
| Other owners | 1887 |