- All sections
- B - Performing operationstransporting
- B43L - Articles for writing or drawing uponaccessories for writing or drawing
- B43L 1/00 - Repeatedly-usable boards or tablets for writing or drawing
Patent holdings for IPC class B43L 1/00
Total number of patents in this class: 228
10-year publication summary
|
29
|
41
|
31
|
35
|
27
|
27
|
14
|
18
|
24
|
10
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| 3m Innovative Properties Company | 17478 |
14 |
| General Printing & Design, Inc. | 48 |
11 |
| Comsero, Inc. | 23 |
10 |
| Zero Lab Co., Ltd. | 12 |
8 |
| Polyvision, naamloze vennootschap | 20 |
6 |
| ICP Construction, Inc. | 286 |
5 |
| Chameleon Corporation, Inc. | 9 |
4 |
| Clarus Glassboards LLC | 22 |
4 |
| Guangzhou Shirui Electronics Co., Ltd. | 774 |
4 |
| Guangzhou Shiyuan Electronics Co., Ltd. | 939 |
4 |
| Hardwire, LLC | 53 |
4 |
| IdeaPaint, Inc. | 10 |
4 |
| Vertech, Inc. | 4 |
4 |
| Buffalo Games, LLC | 78 |
4 |
| Antemilan, LLC | 4 |
4 |
| Seiko Epson Corporation | 20256 |
3 |
| Corning Incorporated | 10504 |
3 |
| Crayola LLC | 196 |
3 |
| Wipebook Corp. | 5 |
3 |
| The McCall Pattern Company, Inc. | 16 |
3 |
| Other owners | 123 |