- All sections
- G - Physics
- G09B - Educational or demonstration appliancesappliances for teaching, or communicating with, the blind, deaf or mutemodelsplanetariaglobesmapsdiagrams
- G09B 21/02 - Devices for Braille writing
Patent holdings for IPC class G09B 21/02
Total number of patents in this class: 86
10-year publication summary
|
9
|
13
|
17
|
13
|
9
|
6
|
9
|
4
|
6
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Enhanced Visions Systems, Inc. | 57 |
6 |
| Freedom Scientific, Inc. | 116 |
5 |
| Microsoft Technology Licensing, LLC | 54439 |
3 |
| Dot Incorporation | 77 |
3 |
| Optelec Holding B.V. | 11 |
3 |
| Perkins School for the Blind | 28 |
3 |
| Block, Inc., The | 1674 |
3 |
| Intel Corporation | 47102 |
2 |
| Google Technology Holdings LLC | 2095 |
2 |
| Visa International Service Association | 4952 |
2 |
| Ball Corporation | 400 |
2 |
| Dentsu Inc. | 180 |
2 |
| Technologies HumanWare Inc. | 46 |
2 |
| Universidad Catolica de La Santisima Concepcion | 33 |
2 |
| Inside Vision | 5 |
2 |
| Thales DIS France SA | 1124 |
2 |
| Thinkerbell Labs Private Limited | 4 |
2 |
| Samsung Electronics Co., Ltd. | 157557 |
1 |
| International Business Machines Corporation | 62621 |
1 |
| Canon Inc. | 43768 |
1 |
| Other owners | 37 |