- All sections
- B - Performing operations; transporting
- B43L - Articles for writing or drawing upon; accessories 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: 212
10-year publication summary
|
27
|
23
|
28
|
42
|
31
|
35
|
27
|
26
|
13
|
7
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| 3m Innovative Properties Company | 18406 |
15 |
| Comsero, Inc. | 27 |
10 |
| Rocket Innovations, Inc. | 39 |
9 |
| Zero Lab Co., Ltd. | 12 |
8 |
| Polyvision, naamloze vennootschap | 22 |
6 |
| ICP Construction, Inc. | 268 |
5 |
| Kent Displays Incorporated | 73 |
5 |
| Chameleon Corporation, Inc. | 9 |
4 |
| Clarus Glassboards LLC | 22 |
4 |
| Hardwire, LLC | 41 |
4 |
| IdeaPaint, Inc. | 12 |
4 |
| Antemilan, LLC | 4 |
4 |
| Seiko Epson Corporation | 18724 |
3 |
| Corning Incorporated | 9932 |
3 |
| Crayola LLC | 177 |
3 |
| Guangzhou Shirui Electronics Co., Ltd. | 651 |
3 |
| Guangzhou Shiyuan Electronics Co., Ltd. | 898 |
3 |
| Vertech, Inc. | 3 |
3 |
| The McCall Pattern Company, Inc. | 36 |
3 |
| Revolution Sign and Media Group LLC | 5 |
3 |
| Other owners | 110 |