- All sections
- B - Performing operations; transporting
- B43K - Implements for writing or drawing
- B43K 21/18 - Writing-core feeding mechanisms with stepwise feed of writing-cores having ratchet means
Patent holdings for IPC class B43K 21/18
Total number of patents in this class: 7
10-year publication summary
|
1
|
1
|
1
|
1
|
0
|
0
|
0
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2
|
1
|
0
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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tokiwa Corporation | 146 |
2 |
| Dpg USA Inc. | 57 |
1 |
| Federal Package Network, Inc. | 17 |
1 |
| Mitsubishi Pencil Company, Limited | 679 |
1 |
| Societe BIC | 1064 |
1 |
| F.i.l.a.—fabrica Italiana LAPIS Ed Affini S.p.A. | 4 |
1 |
| Other owners | 0 |