- 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 21/02 - Devices for Braille writing
Patent holdings for IPC class G09B 21/02
Total number of patents in this class: 82
10-year publication summary
|
8
|
7
|
16
|
9
|
13
|
17
|
13
|
9
|
5
|
3
|
| 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Freedom Scientific, Inc. | 232 |
6 |
| Microsoft Technology Licensing, LLC | 48371 |
3 |
| Dot Incorporation | 46 |
3 |
| Optelec Holding B.V. | 11 |
3 |
| Perkins School for the Blind | 28 |
3 |
| Tactile Engineering, LLC | 9 |
3 |
| Intel Corporation | 46078 |
2 |
| Google Technology Holdings LLC | 3143 |
2 |
| Visa International Service Association | 3925 |
2 |
| Dentsu Inc. | 147 |
2 |
| Technologies HumanWare Inc. | 42 |
2 |
| Universidad Catolica de La Santisima Concepcion | 12 |
2 |
| Inside Vision | 5 |
2 |
| Tactile Solutions, Inc. | 4 |
2 |
| Sensee, Inc. | 14 |
2 |
| Overflow Biz, Inc. | 8 |
2 |
| Samsung Electronics Co., Ltd. | 123340 |
1 |
| International Business Machines Corporation | 63166 |
1 |
| Toyota Motor Corporation | 28316 |
1 |
| Seiko Epson Corporation | 19132 |
1 |
| Other owners | 37 |