- 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 |