- All sections
- B - Performing operations; transporting
- B43K - Implements for writing or drawing
- B43K 8/03 - Ink reservoirs; Ink cartridges
Patent holdings for IPC class B43K 8/03
Total number of patents in this class: 113
10-year publication summary
|
12
|
14
|
9
|
6
|
15
|
14
|
11
|
10
|
6
|
5
|
| 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 |
18 |
| Societe BIC | 1064 |
9 |
| Kabushiki Kaisha Pilot Corporation | 321 |
6 |
| 3S Corporation | 8 |
5 |
| Crayola LLC | 177 |
5 |
| STABILO International GmbH | 44 |
5 |
| Sanford, L.P. | 948 |
4 |
| Faber-Castell AG | 165 |
3 |
| Porex Technologies Corp. | 26 |
3 |
| SDI Corporation | 32 |
3 |
| Zebra Co., Ltd. | 93 |
3 |
| Amara Rahman Durham | 2 |
2 |
| Dong-A Pencil Co., Ltd. | 61 |
2 |
| Epoch Chemical Co., Ltd. | 4 |
2 |
| Europe Brands S.à r.l. | 21 |
2 |
| Europe Brands SARL | 7 |
2 |
| Kuretake Co., Ltd. | 131 |
2 |
| Ningbo Wuyun Pen Manufacturing Co., Ltd. | 5 |
2 |
| The Pilot Ink Co., Ltd. | 95 |
2 |
| Sakura Color Products Corporation | 265 |
2 |
| Other owners | 31 |