- All sections
- H - Electricity
- H01L - Semiconductor devices not covered by class
- H01L 21/8239 - Memory structures
Patent holdings for IPC class H01L 21/8239
Total number of patents in this class: 701
10-year publication summary
|
27
|
23
|
24
|
75
|
125
|
95
|
76
|
51
|
39
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TDK Corporation | 6306 |
116 |
| Semiconductor Energy Laboratory Co., Ltd. | 10902 |
70 |
| Micron Technology, Inc. | 24960 |
66 |
| Sony Semiconductor Solutions Corporation | 8770 |
60 |
| Tohoku University | 2526 |
36 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
29 |
| Samsung Electronics Co., Ltd. | 131630 |
26 |
| NEC Corporation | 32703 |
23 |
| Sandisk Technologies LLC | 5684 |
17 |
| Unisantis Electronics Singapore Pte. Ltd. | 604 |
13 |
| Renesas Electronics Corporation | 6305 |
11 |
| National Institute of Advanced Industrial Science and Technology | 3677 |
11 |
| Kioxia Corporation | 9847 |
11 |
| SK Hynix Inc. | 11030 |
10 |
| Macronix International Co., Ltd. | 2562 |
10 |
| Hewlett-Packard Development Company, L.P. | 28538 |
9 |
| Changxin Memory Technologies, Inc. | 4732 |
8 |
| International Business Machines Corporation | 60644 |
6 |
| Fujitsu Limited | 19265 |
6 |
| Institute of Microelectronics, Chinese Academy of Sciences | 1290 |
6 |
| Other owners | 157 |