- All sections
- H - Electricity
- H01L - Semiconductor devices not covered by class
- H01L 21/04 - Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer, carrier concentration layer
Patent holdings for IPC class H01L 21/04
Total number of patents in this class: 1914
10-year publication summary
174
|
189
|
217
|
218
|
188
|
149
|
142
|
135
|
133
|
48
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Fuji Electric Co., Ltd. | 4750 |
156 |
Infineon Technologies AG | 8189 |
117 |
Toshiba Corporation | 12017 |
107 |
Sumitomo Electric Industries, Ltd. | 14131 |
97 |
Rohm Co., Ltd. | 5843 |
83 |
Mitsubishi Electric Corporation | 43934 |
79 |
Denso Corporation | 23338 |
74 |
Cree, Inc. | 1157 |
52 |
Toyota Motor Corporation | 28582 |
38 |
Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
36 |
General Electric Company | 18133 |
32 |
Wolfspeed, Inc. | 542 |
31 |
Semiconductor Components Industries, L.L.C. | 5345 |
29 |
STMicroelectronics S.r.l. | 3693 |
28 |
International Business Machines Corporation | 60644 |
25 |
Renesas Electronics Corporation | 6305 |
19 |
Applied Materials, Inc. | 16587 |
14 |
Samsung Electronics Co., Ltd. | 131630 |
13 |
Micron Technology, Inc. | 24960 |
12 |
Texas Instruments Incorporated | 19376 |
12 |
Other owners | 860 |