Patent holdings for IPC class G09B 19/06

Total number of patents in this class: 475

10-year publication summary

72
72
55
69
71
68
58
49
39
3
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
International Business Machines Corporation
60129
17
Pearson Education, Inc.
456
11
Rosetta Stone LLC
52
11
Educational Testing Service
244
10
Voxy, Inc., DBA Voxy, Inc.
16
10
Rosetta Stone Ltd.
33
9
Age of Learning, Inc.
70
8
Casio Computer Co., Ltd.
3373
7
Microsoft Technology Licensing, LLC
52886
7
Lexia Learning Systems LLC
36
6
Apple Inc.
52750
5
Sony Corporation
31541
5
Amazon Technologies, Inc.
25909
5
Nippon Telegraph and Telephone Corporation
16332
5
Education4sight GmbH
19
5
POSTECH Academy-industry Foundation
1101
5
Kyndryl, Inc.
3200
5
Breakthrough Performancetech, LLC
34
4
Neuron Fuel, Inc.
13
4
Wespeke, Inc.
10
4
Other owners 332