- All sections
- G - Physics
- G09B - Educational or demonstration appliances; appliances for teaching, or communicating with, the blind, deaf or mute; models; planetaria; globes; maps; diagrams
- G09B 21/04 - Devices for conversing with the deaf-blind
Patent holdings for IPC class G09B 21/04
Total number of patents in this class: 58
10-year publication summary
|
3
|
3
|
6
|
15
|
5
|
8
|
6
|
3
|
9
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| META Platforms, Inc. | 7514 |
13 |
| NeoSensory, Inc. c/o TMCx+260 | 37 |
4 |
| Visa International Service Association | 4194 |
2 |
| T-Mobile USA, Inc. | 3668 |
2 |
| Ultratec, Inc. | 78 |
2 |
| Japan Ecology Corporation | 2 |
2 |
| Block, Inc., The | 1405 |
2 |
| Samsung Electronics Co., Ltd. | 131630 |
1 |
| BlackBerry Limited | 5958 |
1 |
| Sony Corporation | 32931 |
1 |
| International Business Machines Corporation | 60644 |
1 |
| Intel Corporation | 45621 |
1 |
| Microsoft Technology Licensing, LLC | 51439 |
1 |
| University of South Florida | 1817 |
1 |
| Boe Technology Group Co., Ltd. | 35384 |
1 |
| Alt, Inc. | 15 |
1 |
| Beijing BOE Optoelectronics Technology Co., Ltd. | 3779 |
1 |
| Booktrack Holdings Limited | 16 |
1 |
| Freedom Scientific, Inc. | 230 |
1 |
| Harcourt Assessment, Inc. | 15 |
1 |
| Other owners | 18 |