- 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 3/02 - Manually- or mechanically-operated teaching appliances 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 3/02
Total number of patents in this class: 19
10-year publication summary
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3
|
3
|
3
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7
|
2
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4
|
2
|
2
|
3
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Educational Testing Service | 259 |
2 |
| Vitruv Inc. | 11 |
2 |
| Canon Inc. | 36841 |
1 |
| Daikin Industries, Ltd. | 9495 |
1 |
| Kyocera Document Solutions Inc. | 5295 |
1 |
| Douglas P. Arduini | 3 |
1 |
| Edison Learning Inc. | 1 |
1 |
| Fat Spaniel Technologies Inc. | 6 |
1 |
| Flashlabs LLC | 1 |
1 |
| Google LLC | 38759 |
1 |
| Hinkler Books Pty Ltd | 4 |
1 |
| RedCritter Corp | 29 |
1 |
| Canon Kabushiki Kaisha | 6884 |
1 |
| Seshat Technologies | 1 |
1 |
| ACT, Inc. | 72 |
1 |
| based Co., Ltd | 2 |
1 |
| Hangzhou Dana Technology Inc. | 21 |
1 |
| Other owners | 0 |