- All sections
- B - Performing operationstransporting
- B43L - Articles for writing or drawing uponaccessories for writing or drawing
- B43L 23/08 - Sharpeners for pencils or leads in which the pencils or leads are sharpened mainly by rotational movement against cutting blades
Patent holdings for IPC class B43L 23/08
Total number of patents in this class: 31
10-year publication summary
|
7
|
6
|
6
|
7
|
3
|
3
|
4
|
2
|
0
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Eisen GmbH | 12 |
4 |
| SDI Corporation | 31 |
4 |
| Crayola LLC | 188 |
2 |
| Shanghai Lees Manufacturing Co., Ltd. | 18 |
2 |
| Nakajima Jukyudo Co., Ltd | 4 |
2 |
| Acme United Corporation | 229 |
1 |
| Bélet Holding SA | 5 |
1 |
| Dpg USA Inc. | 62 |
1 |
| Helen of Troy Limited | 223 |
1 |
| KUM Limited | 2 |
1 |
| Schwan-STABILO Cosmetics GmbH & Co. KG | 80 |
1 |
| STABILO International GmbH | 48 |
1 |
| Tokiwa Corporation | 144 |
1 |
| Safety Nailer LLC | 7 |
1 |
| Lüttgens, Fritz, Dr. | 1 |
1 |
| Sunwood Holding Group Co., Ltd. | 5 |
1 |
| Colorpockit LLC, DBA Colorpockit | 3 |
1 |
| OSAKA CLIP co., LTD | 5 |
1 |
| Carl Mfg.Co.,Ltd. | 25 |
1 |
| Wenzhou Cowins Stationery Technology Co., Ltd | 1 |
1 |
| Other owners | 2 |