- All sections
- G - Physics
- G09B - Educational or demonstration appliancesappliances for teaching, or communicating with, the blind, deaf or mutemodelsplanetariaglobesmapsdiagrams
- 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: 62
10-year publication summary
|
2
|
6
|
15
|
5
|
7
|
6
|
3
|
9
|
7
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| META Platforms, Inc. | 7068 |
12 |
| NeoSensory, Inc. c/o TMCx+260 | 37 |
4 |
| Visa International Service Association | 4745 |
2 |
| Dot Incorporation | 75 |
2 |
| T-Mobile USA, Inc. | 4175 |
2 |
| Ultratec, Inc. | 84 |
2 |
| Sorenson IP Holdings, LLC | 306 |
2 |
| Japan Ecology Corporation | 2 |
2 |
| Block, Inc., The | 1575 |
2 |
| Samsung Electronics Co., Ltd. | 147787 |
1 |
| BlackBerry Limited | 5350 |
1 |
| Sony Corporation | 30921 |
1 |
| International Business Machines Corporation | 61537 |
1 |
| Microsoft Technology Licensing, LLC | 53968 |
1 |
| Thales Avionics, Inc. | 168 |
1 |
| University of South Florida | 1841 |
1 |
| Boe Technology Group Co., Ltd. | 41668 |
1 |
| Alt, Inc. | 17 |
1 |
| Beijing BOE Optoelectronics Technology Co., Ltd. | 3891 |
1 |
| Booktrack Holdings Limited | 16 |
1 |
| Other owners | 21 |