- All sections
- B - Performing operations; transporting
- B43L - Articles for writing or drawing upon; accessories for writing or drawing
- B43L 23/04 - Sharpeners for pencils or leads with gearing with cranked handles
Patent holdings for IPC class B43L 23/04
Total number of patents in this class: 9
10-year publication summary
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0
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1
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1
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0
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1
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1
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1
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1
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0
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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
|
|---|---|---|
| Carl Mfg.Co.,Ltd. | 25 |
3 |
| OSAKA CLIP co., LTD | 5 |
2 |
| Dahle Burotechnik GmbH | 6 |
1 |
| Fujian Soundy Enterprise Co., Ltd. | 2 |
1 |
| Kutsuwa Co., Ltd. | 2 |
1 |
| SDI Corporation | 32 |
1 |
| Other owners | 0 |