- 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: 3261
10-year publication summary
|
74
|
63
|
48
|
41
|
33
|
31
|
32
|
30
|
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 | 18650 |
233 |
| Sanyo Electric Co., Ltd. | 3572 |
202 |
| FUJIFILM Corporation | 30016 |
117 |
| Mitsubishi Electric Corporation | 47338 |
105 |
| Kyocera Corporation | 14185 |
97 |
| Hitachi Chemical Company, Ltd. | 2299 |
79 |
| ULVAC, Inc. | 1373 |
67 |
| Fujikura Ltd. | 3020 |
47 |
| Asahi Glass Company, Limited | 2707 |
42 |
| SunPower Corporation | 367 |
42 |
| Kaneka Corporation | 4640 |
40 |
| Sony Corporation | 30608 |
38 |
| Panasonic Corporation | 19882 |
36 |
| Mitsubishi Heavy Industries, Ltd. | 8962 |
32 |
| Hitachi, Ltd. | 15803 |
28 |
| Tokyo Electron Limited | 13363 |
28 |
| Showa Shell Sekiyu K.K. | 86 |
26 |
| National Institute of Advanced Industrial Science and Technology | 3799 |
24 |
| LG Chem, Ltd. | 17744 |
23 |
| Mitsubishi Materials Corporation | 2468 |
18 |
| Other owners | 1937 |