- All sections
- G - Physics
- G11B - Information storage based on relative movement between record carrier and transducer
- G11B 23/28 - Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus indicating prior or unauthorised use
Patent holdings for IPC class G11B 23/28
Total number of patents in this class: 75
10-year publication summary
|
3
|
1
|
2
|
7
|
5
|
2
|
3
|
1
|
4
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| General Electric Company | 18133 |
12 |
| Koninklijke Philips Electronics N.V. | 13133 |
9 |
| International Business Machines Corporation | 60644 |
8 |
| Sony Corporation | 32931 |
3 |
| Stellar, LLC | 12 |
3 |
| FDD Technologies sa/ag/ltd | 3 |
3 |
| Samsung Electronics Co., Ltd. | 131630 |
2 |
| Hewlett-Packard Development Company, L.P. | 28538 |
2 |
| Thomson Licensing | 4027 |
2 |
| The Board of Trustees of the University of Illinois | 2623 |
2 |
| IBM United Kingdom Limited | 4467 |
2 |
| Quantum Corporation | 332 |
2 |
| Trustees of Tufts College | 743 |
2 |
| Citizen Digital Inc. | 6 |
2 |
| Disney Enterprises, Inc. | 6012 |
1 |
| Warner Bros. Entertainment Inc. | 2271 |
1 |
| Google Inc. | 4362 |
1 |
| Panasonic Corporation | 20786 |
1 |
| Matsushita Electric Industrial Co., Ltd. | 4724 |
1 |
| Seagate Technology LLC | 4228 |
1 |
| Other owners | 15 |