- All sections
- B - Performing operations; transporting
- B43L - Articles for writing or drawing upon; accessories 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
|
1
|
0
|
3
|
1
|
3
|
0
|
0
|
1
|
2
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Antemilan, LLC | 4 |
2 |
| Asahi Glass Company, Limited | 2985 |
1 |
| ACCO Brands Corporation | 869 |
1 |
| Nippon Electric Glass Co., Ltd. | 2299 |
1 |
| Polyvision, naamloze vennootschap | 22 |
1 |
| TeacherGeek Inc. | 3 |
1 |
| Opton (shunchang) Optics Co., Ltd | 7 |
1 |
| Michael Sima | 1 |
1 |
| Shandong Yingcai University | 39 |
1 |
| Sable Designs, LLC | 3 |
1 |
| Other owners | 0 |