- 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: 3461
10-year publication summary
|
167
|
87
|
75
|
68
|
52
|
47
|
31
|
36
|
31
|
7
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sharp Kabushiki Kaisha | 18957 |
252 |
| Sanyo Electric Co., Ltd. | 3926 |
205 |
| FUJIFILM Corporation | 27102 |
118 |
| Mitsubishi Electric Corporation | 43934 |
105 |
| Kyocera Corporation | 12735 |
105 |
| Hitachi Chemical Company, Ltd. | 2455 |
79 |
| ULVAC, Inc. | 1448 |
67 |
| Fujikura Ltd. | 2777 |
49 |
| Asahi Glass Company, Limited | 2985 |
43 |
| SunPower Corporation | 612 |
43 |
| Sony Corporation | 32931 |
42 |
| Kaneka Corporation | 4445 |
41 |
| Panasonic Corporation | 20786 |
36 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
32 |
| Showa Shell Sekiyu K.K. | 99 |
31 |
| Hitachi, Ltd. | 16452 |
29 |
| Tokyo Electron Limited | 11599 |
28 |
| National Institute of Advanced Industrial Science and Technology | 3677 |
28 |
| LG Chem, Ltd. | 17205 |
23 |
| Sumitomo Chemical Company, Limited | 8808 |
21 |
| Other owners | 2084 |