- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 20/18 - Error detection or correctionTesting
Patent holdings for IPC class G11B 20/18
Total number of patents in this class: 1147
10-year publication summary
|
141
|
122
|
89
|
91
|
62
|
51
|
42
|
33
|
29
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seagate Technology LLC | 3968 |
116 |
| International Business Machines Corporation | 61144 |
81 |
| Toshiba Corporation | 12317 |
74 |
| Avago Technologies International Sales Pte. Limited | 8805 |
64 |
| JPMorgan Chase Bank, National Association | 8546 |
61 |
| Toshiba Electronic Devices & Storage Corporation | 1946 |
53 |
| Panasonic Corporation | 20149 |
41 |
| Sony Corporation | 31124 |
38 |
| Samsung Electronics Co., Ltd. | 144675 |
36 |
| Marvell Asia PTE, Ltd. | 6558 |
35 |
| Teradyne, Inc. | 546 |
31 |
| Panasonic Intellectual Property Management Co., Ltd. | 31084 |
29 |
| Cavium International | 5072 |
28 |
| Hitachi Consumer Electronics Co., Ltd. | 285 |
26 |
| Oracle International Corporation | 12921 |
18 |
| NEC Corporation | 35471 |
15 |
| Marvell International Ltd. | 1183 |
13 |
| Fujitsu Limited | 18354 |
11 |
| Pioneer Corporation | 4390 |
11 |
| Kioxia Corporation | 10288 |
11 |
| Other owners | 355 |