- 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: 3311
10-year publication summary
|
82
|
74
|
63
|
48
|
41
|
33
|
31
|
32
|
30
|
21
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sharp Kabushiki Kaisha | 18716 |
240 |
| Sanyo Electric Co., Ltd. | 3654 |
204 |
| FUJIFILM Corporation | 29586 |
117 |
| Mitsubishi Electric Corporation | 46449 |
105 |
| Kyocera Corporation | 13930 |
99 |
| Hitachi Chemical Company, Ltd. | 2339 |
79 |
| ULVAC, Inc. | 1378 |
67 |
| Fujikura Ltd. | 2948 |
47 |
| Asahi Glass Company, Limited | 2760 |
43 |
| SunPower Corporation | 369 |
42 |
| Kaneka Corporation | 4577 |
40 |
| Sony Corporation | 30929 |
39 |
| Panasonic Corporation | 20042 |
36 |
| Mitsubishi Heavy Industries, Ltd. | 8787 |
32 |
| Hitachi, Ltd. | 15572 |
28 |
| Tokyo Electron Limited | 12899 |
28 |
| National Institute of Advanced Industrial Science and Technology | 3793 |
28 |
| Showa Shell Sekiyu K.K. | 89 |
28 |
| LG Chem, Ltd. | 17656 |
23 |
| Mitsubishi Materials Corporation | 2458 |
18 |
| Other owners | 1968 |