- All sections
- B - Performing operations; transporting
- B43K - Implements for writing or drawing
- B43K 21/22 - Writing-cores gripping means, e.g. chucks
Patent holdings for IPC class B43K 21/22
Total number of patents in this class: 57
10-year publication summary
|
6
|
2
|
1
|
6
|
8
|
8
|
3
|
4
|
2
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Pencil Company, Limited | 679 |
21 |
| Kotobuki & Co., Ltd. | 109 |
9 |
| Societe BIC | 1064 |
4 |
| Sanford, L.P. | 948 |
3 |
| BISS Product Development LLC | 22 |
2 |
| Zebra Co., Ltd. | 93 |
2 |
| Wenzhou Tianjiao Pen Industrial Co., Ltd. | 8 |
2 |
| Pica-Marker Vermögens GmbH & Co. KG | 2 |
2 |
| Henkel AG & Co. KGaA | 10129 |
1 |
| Boe Technology Group Co., Ltd. | 35384 |
1 |
| Cranial Technologies, Inc. | 65 |
1 |
| Dpg USA Inc. | 57 |
1 |
| Hefei Xinsheng Optoelectronics Technology Co., Ltd. | 2483 |
1 |
| Kabushiki Kaisha Pilot Corporation | 321 |
1 |
| Kokuyo Co., Ltd. | 210 |
1 |
| Micro Co., Ltd. | 7 |
1 |
| Pentel Kabushiki Kaisha | 153 |
1 |
| Wacom Co., Ltd. | 1629 |
1 |
| C&C International Co., Ltd. | 4 |
1 |
| Go Forward AS | 1 |
1 |
| Other owners | 0 |