- All sections
- B - Performing operationstransporting
- B43L - Articles for writing or drawing uponaccessories for writing or drawing
- B43L 1/06 - Blackboards rigid
Patent holdings for IPC class B43L 1/06
Total number of patents in this class: 11
10-year publication summary
|
3
|
1
|
3
|
0
|
0
|
1
|
2
|
1
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Antemilan, LLC | 4 |
2 |
| Asahi Glass Company, Limited | 2707 |
1 |
| ACCO Brands Corporation | 819 |
1 |
| Nippon Electric Glass Co., Ltd. | 2497 |
1 |
| Polyvision, naamloze vennootschap | 20 |
1 |
| TeacherGeek Inc. | 6 |
1 |
| Opton (shunchang) Optics Co., Ltd | 8 |
1 |
| Michael Sima | 1 |
1 |
| Shandong Yingcai University | 39 |
1 |
| Sable Designs, LLC | 4 |
1 |
| Other owners | 0 |