- All sections
- G - Physics
- G09B - Educational or demonstration appliancesappliances for teaching, or communicating with, the blind, deaf or mutemodelsplanetariaglobesmapsdiagrams
- 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: 23
10-year publication summary
|
3
|
7
|
2
|
4
|
2
|
2
|
3
|
6
|
4
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 42303 |
2 |
| Mata Edu, Inc. | 11 |
2 |
| Siemens AG | 24200 |
1 |
| International Business Machines Corporation | 62220 |
1 |
| Siemens Corporation | 555 |
1 |
| Daikin Industries, Ltd. | 10384 |
1 |
| Microsoft Technology Licensing, LLC | 54242 |
1 |
| Douglas P. Arduini | 3 |
1 |
| Edison Learning Inc. | 1 |
1 |
| Educational Testing Service | 239 |
1 |
| Flashlabs LLC | 1 |
1 |
| Google LLC | 43789 |
1 |
| Hinkler Books Pty Ltd | 3 |
1 |
| RedCritter Corp | 35 |
1 |
| Canon Kabushiki Kaisha | 7212 |
1 |
| Seshat Technologies | 1 |
1 |
| based Co., Ltd | 2 |
1 |
| Hangzhou Dana Technology Inc. | 21 |
1 |
| Equate-Ing IP Holdco, LLC | 1 |
1 |
| ACT Education Corp. | 58 |
1 |
| Other owners | 1 |