- 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 7/02 - Electrically-operated teaching apparatus or devices working with questions and answers of the type wherein the student is expected to construct an answer to the question which is presented or wherein the machine gives an answer to the question presented by the student
Patent holdings for IPC class G09B 7/02
Total number of patents in this class: 882
10-year publication summary
|
101
|
134
|
137
|
154
|
153
|
110
|
113
|
100
|
77
|
22
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Pearson Education, Inc. | 453 |
55 |
| International Business Machines Corporation | 60644 |
53 |
| Educational Testing Service | 259 |
16 |
| Microsoft Technology Licensing, LLC | 51439 |
14 |
| Fujitsu Limited | 19265 |
13 |
| D2l Corporation | 163 |
11 |
| Houghton Mifflin Harcourt Publishing Company | 298 |
11 |
| Enduvo, Inc. | 38 |
11 |
| Cognivue, Inc. | 42 |
10 |
| Casio Computer Co., Ltd. | 3343 |
9 |
| Riiid Inc. | 84 |
9 |
| Sony Corporation | 32931 |
8 |
| NEC Corporation | 32703 |
7 |
| Shenzhen Eaglesoul Technology Co., Ltd. | 100 |
7 |
| Kyndryl, Inc. | 3161 |
7 |
| President and Fellows of Harvard College | 5792 |
6 |
| Breakthrough Performancetech, LLC | 34 |
6 |
| Coursera, Inc. | 43 |
6 |
| Hangzhou Dana Technology Inc. | 21 |
6 |
| The Regents of the University of California | 18943 |
5 |
| Other owners | 612 |