- 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: 84
10-year publication summary
7
|
16
|
9
|
13
|
17
|
13
|
9
|
6
|
8
|
2
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Freedom Scientific, Inc. | 230 |
10 |
Microsoft Technology Licensing, LLC | 51439 |
3 |
Dot Incorporation | 59 |
3 |
Optelec Holding B.V. | 11 |
3 |
Perkins School for the Blind | 29 |
3 |
Intel Corporation | 45621 |
2 |
Google Technology Holdings LLC | 2658 |
2 |
Visa International Service Association | 4194 |
2 |
Dentsu Inc. | 160 |
2 |
Technologies HumanWare Inc. | 42 |
2 |
Universidad Catolica de La Santisima Concepcion | 18 |
2 |
Inside Vision | 5 |
2 |
Sensee, Inc. | 18 |
2 |
Overflow Biz, Inc. | 7 |
2 |
Samsung Electronics Co., Ltd. | 131630 |
1 |
International Business Machines Corporation | 60644 |
1 |
Seiko Epson Corporation | 18724 |
1 |
Eastman Kodak Company | 3444 |
1 |
Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
1 |
Korea Advanced Institute of Science and Technology | 3906 |
1 |
Other owners | 38 |